Chevrolet Impala Chevrolet Impala

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Chevrolet Impala repairs by problem area

Engine (34%)

Transmission and Drivetrain (10%)

Brakes and Traction Control (10%)

Suspension and Steering (18%)

Electrical and Air Conditioning (20%)

Paint, Rust, Leaks, Rattles, and Trim (4%)

Other (4%)

Chart based on 726 repairs.

Chevrolet Impala engine repair cost distribution

$2500+ (4%)

$1000 - $2499 (12%)

$500 - $999 (18%)

$100 - $499 (52%)

< $100 (14%)

Chart based on 202 repair trips. The repair cost chart excludes repairs made under warranty, do-it-yourself repairs, and repair trips that include maintenance.

2014 Chevrolet Impala 4dr Sedan

305-horsepower 3.6L V6 6-speed shiftable automatic FWD

4960 mi Oil Leaking from oil pan 
10540 mi Fuel System issue with regards to computer. 

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2014 Chevrolet Impala 4dr Sedan

195-horsepower 2.5L I4 6-speed shiftable automatic FWD

20000 mi rocker arm solenoid. 

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2012 Chevrolet Impala 4dr Sedan

300-horsepower 3.6L V6 6-speed automatic FWD

80000 mi

US $690
Discovered front engine cover leaking. Known issue, covered by GM. Also replaced timing chain & water pump and new front brake rotors. Timing chain & rotors paid for by me. 

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2011 Chevrolet Impala 4dr Sedan

211-horsepower 3.5L V6 4-speed automatic FWD

33000 mi Car defaulted to safe mode. The fuel injector control and the injectors were replaced under warranty. 

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2009 Chevrolet Impala 4dr Sedan

211-horsepower 3.5L V6 4-speed automatic FWD

56000 mi replaced head gaskets, rack and pinion and oil pan gasket 

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2008 Chevrolet Impala 4dr Sedan

303-horsepower 5.3L V8 4-speed automatic FWD

112000 mi

US $300
Relay switch for radiator fan was bad. 
156000 mi

US $90
Replaced oil pressure sensor. 
182000 mi

US $160
O2 sensor 
82000 mi

US $107
Oil pressure switch- sensor went bad 

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2008 Chevrolet Impala 4dr Sedan

233-horsepower 3.9L V6 4-speed automatic FWD

141000 mi

US $370
Leaking coolant, replaced "cross over" gaskets.Note, all 07 & 08 Impalas have major rear suspension problem, ruins rear tires. Class action suit, see USA Today, 7/06/11, page 4B.  
148000 mi

US $450
check engine light came on again replace solenoid in evaporation tank. replace oxygen sensor. 
249000 mi

US $1033
Replace failed fuel pump & sensor 
80000 mi

US $334
Replaced EVAP system solenoid purge valve located next to the fuel filler neck. 
19940 mi Engine crankshaft seal leaking oil. Power steering return line leaking fluid. Both repaired by dealer under warranty. 

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2008 Chevrolet Impala 4dr Sedan

211-horsepower 3.5L V6 4-speed automatic FWD

61000 mi Some sensor in the exhaust system failed. Replaced in about 15 minutes. Covered under GM Majorguard extended warranty 
100200 mi

C $300
gas pedal sensor 
62620 mi

C $297
Initial difficulty refueling vehicle, few days later check engine light set, diagnosis cost $109.95, replaced evap. vent solenoid, part cost $97.95 plus labor. Dealer advised not covered under emission warranty as 96,691 km. at time. 
109120 mi

C $148
front crankshaft seal leaking, oil ruined front motor mount, 
124620 mi

C $268
check engine light and message reduced power,service traction control. scanned,codep2138. replaced accelerator pedal position sensor(app sensor). 
131220 mi check engine light now on ,appears evap. canister solenoid again (second time). will replace myself. 
88300 mi Had a coolant leak that was hard to track down.Looked like it was coming from the rear head gasket.took it to my local dealer to have it diagnosed.Turned out to be o rings on coolant crossover tube.Fixed under warranty.I'm happy 
112000 mi

US $1500
rear head gasket leaking.replaced both head gaskets.started out with a slight rise in temp.then a good size leak right after car was turned off.didnt notice any tell tale white exhaust or smell burning oil.very expensive.not happy 
130000 mi

US $80
check engine light said "emissions leak large." it was the evap solenoid next to gas tank. one bolt and twenty minutes later i was done. wish all repairs were this easy. 
165000 mi

US $72
dash warning came on with "engine reduced power"and traction warning light came on.turns out it was the gas pedal which has electrical position sensor.it cost 72.00 and took ten minutes for me to replace.just two bolts and one plug.easy job 
69000 mi Engine leaking coolant 
119000 mi

US $100
Air pump failed 
65000 mi

US $400
Vapor canister 
70000 mi

US $250
Muffler 
34000 mi

US $312
Check engine light came on. Took it in to the dealer. Dealer ended up replacing the vent solenoid and the harness for it. 
67500 mi

US $18
Took car for oil leak on manifold and heads. Dealer said no oil leak but antifreeze leak from filler neck. They changed gasket under powertrain warranty 
110000 mi

US $85
Had to replace gasket between oil filter housing and engine block 
139300 mi

US $165
Engine Oil Pressure sensor went bad. 
156000 mi

US $600
An oil leak was not fixed. 
56000 mi

US $128
Emissions error, fuel system. Replaced gas cap again with new one. 
57000 mi

US $130
emissions error, diagnostics, replaced fuel cap AGAIN 
38300 mi

US $80
Running 1.5 quarts low on oil. Sensors checked out ok. Oil change and filter. Monitoring oil level for next 3 to 4 weeks before any further repair. 
61000 mi

US $200
Check Engine light Diagnosed as Failed cannister vent solenoid. Dealer performed repair while car was on lift of oil change. Very satisfied with dealer not with car reliabilty 

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2007 Chevrolet Impala 4dr Sedan

303-horsepower 5.3L V8 4-speed automatic FWD

32240 mi

C $100
Check engine light came on. Was told it was an engine sensor. Pair $100 deductible under extended GM warranty. 

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2007 Chevrolet Impala 4dr Sedan

233-horsepower 3.9L V6 4-speed automatic FWD

64000 mi had to replace muffler. If I would have paid it would have cost $1100. Service rep felt that this should not have happened and got Chevrolet to pay for repair using my extended warranty. 
66000 mi replace water pump it was leaking 
42000 mi check engine light on emissions system evap sensor bad 
296000 mi

US $300
Muffler needed replaced and another part broke off so more had to be replaced 
44000 mi Leaking crankshaft timing cover seal, repair performed under powertrain warranty. 
67000 mi Coolant Crossover Gasket 
90000 mi

US $40
Check engine light came on. Engine ran normally. Remote start did not work. Scanned codes and found oil pressure sensor defective. Bought tool to replace sensor and new sensor. Replaced sensor and corrected both problems. 
92000 mi

US $220
crank case seal oil leak 
108500 mi

US $50
Replaced water pump 
115000 mi

US $220
Rough idle, dealer said it was coolant sensor, replaced and problem still there, dealer said injectors, problem still there 
118000 mi

US $200
Bad MAF sensor 
124000 mi Rough idle still occasionally present when sold. Was better and then back and then better and then back, no explanation. 

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2007 Chevrolet Impala 4dr Sedan

211-horsepower 3.5L V6 4-speed automatic FWD

36000 mi Antifreeze bubbles violently after street traffic driving with AC on. Antifreeze is going low in a week. Warning lights flash and info- panel says turn off air conditioning. Not fixed - Antifreeze still goes low too fast when using Air Cond Left the car two days. Problem could not be duplicated. I was given instructions on how/when to add antifreeze. Antifreeze is disappearing. I guess due to violent bubbling after driving in street traffic with air conditioning on. 
37000 mi Antifreeze disappearing. 
49000 mi Check Engine Light and Runs Rough. Found Intake Valve Seat on Cylinder 5 dropped. Piston was gouged&broken. Head Gouged & Valve Damaged. Cylinder Wall scored with gouges. Instructed to replace engine Assembly under 5year 100,000 warranty 
138000 mi

US $1400
crank arm seal and oil pan gasket 
141000 mi

US $800
crank arm sensor 
91500 mi

US $450
Coolant leaking. Shop replaced some gaskets, charged for four hours time. 
110000 mi

US $150
New muffler 
136000 mi Slow oil leak 
75000 mi

US $450
replace the water pump, serpentine belt and refill antifreeze. 
184300 mi

US $300
Oil pressure sending unit failure Evap solenoid replaced 
59000 mi Evap solenoid replaced 
84000 mi

US $194
Alerted by dashboard warning message "Low Oil Level" Replaced Crank Seal. 
93000 mi

US $207
Ck engine light. Replaced solenoid and pigtail. 
63000 mi

US $358
Emission system valve fault. Replaced along with gas cap which I knew needed to be replaced as it did not lock securely anymore. 
100300 mi Water pump replaced at 99,700 miles, 300 miles away from the 100K warantee expiration. Performed by dealership. 
184000 mi

US $200
oil leak at filter housing 
70000 mi

US $100
Had Solenoid Sensor replaced 
122000 mi

US $800
Intake manifold gasket leak. They also replaced the waterpump at the same time. 

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2007 Chevrolet Impala / Monte Carlo

Engine not specified

52000 mi

US $672
Secondary air injection pump failure,air injection air check valve failure,both items replaced by dealer. 

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2006 Chevrolet Impala

Engine not specified

210000 mi

US $175
I could not pass a obd test so they said it was my egr system 
183000 mi

US $75
Water pump leak. Replaced pump. 

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2006 Chevrolet Impala 4dr Sedan

303-horsepower 5.3L V8 4-speed automatic FWD

241000 mi

US $36
Replace oil pressure sending unit 
98000 mi

US $800
Bad sensors; replaced 
71300 mi

US $175
Fixed oil leaks that showed up during year three. 

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2006 Chevrolet Impala 4dr Sedan

242-horsepower 3.9L V6 4-speed automatic FWD

35000 mi Head gasket was leaking not allowing hot air to blow and defrost the windshield. 
65700 mi

US $30
Cooling line fitting. 
70000 mi

US $375
Water pump replaced. Serpintine belt replaced. 
77000 mi

US $250
Thermostat replaced 
38000 mi

US $900
Check engine light on (then off, then back on) plus sporadic warnings to tighten gas-cap - which was tight! Needed new sensor(s) . 
84500 mi

US $183
Waterpump replaced at 83000 miles 
17730 mi Emission canister vent solenoid-Replaced under Warranty 
28100 mi

C $1130
Water pump and coolant crossover gaskets developed bad leak aand were replaced with all cost paid by owner.  

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2006 Chevrolet Impala 4dr Sedan

211-horsepower 3.5L V6 4-speed automatic FWD

500 mi Replacement of heater lines as part of TSB for reduction of noise coupled into cabin from EVAP Purge Valve operation. Prior to this repair a tapping noise could be heard though the firewall when the EVAP Purge Valve was activated. This noise was just a 
95300 mi Radiator was flushed and new coolant was added. The shop instructed me to drive around and carefully monitor it. They said that I MAY need a new radiator. 
98000 mi

US $350
The water pump was leaking, causing a coolant leak and it was replaced. 
118000 mi Oil leak around the oil filter. Persisted through many oil changes. Learned just before car sold that only would have cost about $150 to fix. 
59000 mi Car would not heat while in idle, we bled the hoses from the heater core and it fixed the problem. 
68000 mi

US $120
Had to replace water pump. 
100000 mi

US $180
water pump leaking coolant 
1520 mi 1. Key could not be removed from ignition - replaced actuator plunger assembly. 2. Squealing Front Pass Door Window - needed to be reset on track and lubed. 
34000 mi Car experienced massive coolant loss. Noticed coolant covering engine and underside of hood. Saw Dex-cool running down the back of the fan/radiator. Dealer pressure tested cooling system and replaced water pump under warranty. Seems OK after repair. 
120000 mi

US $630
Replaced water pump 
63000 mi

US $3200
overheated, blown headgasket 
87500 mi

US $450
Replaced cooling pump and drive belt due to leak 
140740 mi

C $120
damaged wire to transmission sensor 
80000 mi

US $172
Check valve for fuel tank vent replaced. Onstar diagnosed 
114000 mi

US $450
Water pump leaking, serpentine belt and upper and lower radiator hoses also replaced preventively 
152000 mi

US $485
WATER PUMP SEIZED 

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2006 Chevrolet Impala / Monte Carlo

Engine not specified

82000 mi

US $500
Vehicle DIC (Driver Info Center) displayed "Engine Hot / A/C Off" and temp gauge dropped to zero. With no temp gauge, it was decided it was best to have it towed. Dealer replaced: Temp sensor Returned 2 week later for reflash of computer.  
61000 mi

US $200
Water pump failed causing the drive belt to shred. 

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2005 Chevrolet Impala

Engine not specified

123000 mi

US $3000
Heads gasket Seals leaked causing the heads to be warped. All the sensors bad 2 times  And the motor & tranny mount have both been broken causing the tranny to slip. 

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2005 Chevrolet Impala 4dr Sedan

200-horsepower 3.8L V6 4-speed automatic FWD

76000 mi

US $175
Water pump leaking- replaced 
82700 mi

US $60
heater not blowing hot, coolant flushed, heater core backflushed and replaced dexcool with universal coolant 
87000 mi

US $275
Replaced heater core- flushing did not resolve no heat problem, only lasted for a short time. Heater core plugged. 
110000 mi

US $350
Oil pan gasket leaking- replaced 
139000 mi

US $500
Car quits upon starting, replaced throttle position sensor. Problem persists. 
171000 mi Head gasket 
102000 mi

US $43
Exhaust resonator was replaced 
134000 mi

US $311
Serpentine belt replaced 
135000 mi

US $1460
Upper and lower intake coolant leak. Replaced intake manifold, gaskets, spark plugs & wires, coolant elbows, thermostat, coolant flush and oil change. 

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2005 Chevrolet Impala 4dr Sedan

180-horsepower 3.4L V6 4-speed automatic FWD

185000 mi

US $400
fuel regulator leaking serpentine belt replaced 
142000 mi

US $1000
Catalytic converter replaced. TSB. 
150000 mi

US $150
Fuel filter was replaced 
155000 mi

US $160
Harmonic Balancer and Serpentine Belt replaced. 
25000 mi Bad serpentine belt. Covered under warranty. 
73000 mi

US $51
Replaced leaking fuel pressure regulator. 
73729 mi

US $600
Hard starting. Replaced fuel pressure regulator, then fuel pump. Replaced fuel pressure regulator again, problem solved. 

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2004 Chevrolet Impala 4dr Sedan

supercharged 240hp 3.8L V6 4-speed automatic FWD

140000 mi

US $220
heater core went out, took 6 hrs todo it key got stuck in ignition, replaced lock cylinder and ignition coolant leak, found huge crack in the reservoir wiring harness under hood had been rubbing against belt which lead to a wiring mess and nothing working properly in car 

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2004 Chevrolet Impala 4dr Sedan

200-horsepower 3.8L V6 4-speed automatic FWD

91500 mi

US $65
Replaced factory exhaust resonator.It was separated along the top seam. The remainder of the system was still in good condition 
100000 mi

US $100
plastic elbows from water pump to heater hoses ruptured blowing coolant all over engine 
132700 mi Security problem. Computer not recognizing ignition key. Could not start car. Both computers replaced at my expense by Chevy dealer. 
94000 mi Bad fuel injector. 
162000 mi

US $600
Resonator part of the exhaust system was replaced due to hole in it which made for loud noise. 
100000 mi

US $150
RESONATOR REPLACED 

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2004 Chevrolet Impala 4dr Sedan

180-horsepower 3.4L V6 4-speed automatic FWD

64700 mi car would not start. Good bat. Dealer could not duplicate. This is intermittent. 
62000 mi

US $400
Car needed new coolant hoses and a transmission flush. 
206000 mi

US $230
replaced resonator.. had to modify to fit right bought at Advanced and go back because gasket didnt come with new one.. fuel pressure sensor replaced 
131000 mi

US $2100
Head gasket 
151000 mi

US $100
the accelerator sensor was bad 
65100 mi

C $150
replaced water pump 
68200 mi

C $300
muffler 
76000 mi

US $450
Problem with Dexcool gelling, went in for flush noticed that water pump had evidence of leaking. R&R water pump and thermostat while having complete system flush to get rid of gelled dexcool. Check engine light, code leaky fuel vapor system. Diagnosed as possibly due to aftermarket locking gas cap.  
120000 mi

US $500
Metal Shavings left in one corner of the engine block erroded a large pit in the head which eventually blew through the head gasket seal, necessitating a complete Head Job. After 80K Warranty ended of course. 
190800 mi

C $340
Exhaust fell off. Necessary to replace system from resonator all the way to the end. 
154000 mi My husband replaced the head gasket and 1 air flow sensor. 
36066 mi Lower transmission cooler line slight leaking from pressed crimped metal end near rubber hose end. 
72000 mi

US $1900
replaced lower radiator hose, antifreeze flushed 
100000 mi

US $109
Taken to Parks Chevrolet in Charlotte, NC due to lengthy repairs caused by dex-cool antifreeze. The Dex-cool antifreeze turned into sludge which has eaten through and resulted in the replacement of 3 thermostats, thermal sensor, radiator,etc 

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2004 Chevrolet Impala / Monte Carlo

Engine not specified

4000 mi

US $50
unreliable as to when car starts properly, fixed with new ignition chip 

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2003 Chevrolet Impala 4dr Sedan

200-horsepower 3.8L V6 4-speed automatic FWD

134000 mi

US $50
Catalytic converter replaced 
162000 mi

US $200
Intake manifold gaskets Valve cover gaskets 
195000 mi

US $100
Ignition module, plug wires and coil replaced. 
112000 mi

US $150
REPLACE PLUGGED CATALYTIC CONVERTER 
204600 mi

C $35
The engine cooling overheat warning came on & steam came out from under the hood. Turns out the block heater element had popped out & all of the coolant was lost. The retention bar had corroded away. Replace with a new element & coolant. 
71873 mi Fuel filter changed and fuel injectors cleaned. Catalytic convertor replaced under warranty. It was likely fouled due to other contributing problems and set the check engine light on. 
91000 mi

US $300
Check engine light 
96000 mi

US $131
Evaporative purge valve 
91000 mi

US $583
Coolant leak - intake manifold gasket replaced 
92000 mi

US $475
Ignition, but car would not start. Mass air flow sensor had failed and was replaced. 
96000 mi

US $450
Difficulty starting and power loss while driving. Ignition switch was faulty and replaced. 
129000 mi

US $250
Leak in cooling system, replaced hoses, reservoir. 
129000 mi ignition switch recall - affecting AC / fan power as well 
71300 mi

C $325
Section of stainless steel exhaust system replaced. First repair to this system. 

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2003 Chevrolet Impala 4dr Sedan

180-horsepower 3.4L V6 4-speed automatic FWD

189000 mi

US $243
Replace the the cat.converter 
166000 mi

US $18
Replaced fuel injector o-rings 
133000 mi

US $2225
Purchased car with CEL on, would not pass NYS inspection. Replaced 2 O2 sensors, plugs/wires.  Replaced Catalytic Converter. Also repaired coolant leak caused by intake manifold and hoses. New thermostat, fuel filter, oil change, new tires. 
143000 mi

US $490
Observed coolant under hood and coolant loss. Shop found water pump was leaking. 
144700 mi

US $450
Hole in exhaust pipe after catalytic converter, exhaust very loud. Entire exhaust system after cat replaced. Check engine light (MIL) on. Shop replaced catalytic converter under part warranty and reset computer, MIL has remained off. No parts or labor charge for this repair. 
146500 mi

US $55
Fuel filter seeping, shop would not perform welding without first replacing filter. 
215000 mi Leaking valve cover 
95000 mi

US $187
Oil sending switch leaking, replaced while car was in for oil change 

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2003 Chevrolet Impala / Monte Carlo 4-door

4-cylinder automatic 2WD

35000 mi

US $126
Replaced canister purge solenoid. Was also told steering column flex coupling (intermediate shaft) should be replaced. 
35000 mi

US $250
Had another sensor replaced. Check engine came on again after 2 days. Had another sensor replaced. Do not have paperwork with me but it had something to do with gas. Check engine light has not come on since. 

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2002 Chevrolet Impala 4dr Sedan

200-horsepower 3.8L V6 4-speed automatic FWD

54000 mi Finally fixed the Passlock Security issue that would cause car not start up at times. Needed to take out the ignition switch and clean the contacts 
48000 mi

US $520
replaced upper intake gasket, flushed dexcool out 
69000 mi The fan sensor would not work so car would over heat all the time. Fan sensor was replaced and still would not work. The computer was replaced the car still wouldn't run right. 
110000 mi

US $1336
Leaking Intake Manifold Gasket 
124000 mi

US $1987
Oil leak 
126700 mi

US $517
Car suffered intermittent stutters in engine power, usually at cruising highway speed. After a week, Check Engine light came on. Computer indicated Fuel Air sensor. 
136000 mi

US $1173
Losing power on hills. High rev but no power. 
140300 mi

US $110
Oil pressure sending unit cause leaking oil 
145700 mi catalytic converter needs replacement 
48980 mi

C $348
Coolant crossover pipe Gaskets replaced $78 for parts $270 for labour. 
140740 mi

C $95
Repaired a hole in exhaust pipe located after the resonator. 
149840 mi

C $227
Had to replace evap control valve solenoid in order to pass emissions test. 
173600 mi Needs a new catalytic converter. 
81000 mi

US $150
Plastic elbow from intake manifold to belt tensioner assembly cracked, leaked antifreeze Valve cover gaskets leaking oil onto exhaust manifold causing smoking from under hood. Risk of fire. Replaced valve cover gaskets. 
83000 mi

US $350
Code P0300 Random/multiple cylinder misfire. Replaced Mass Air Flow Sensor, Spark plugs, Spark plug wires, Fuel filter, PCV valve, Camshaft position Sensor. Real Problem was Ignition Control Module which has no specific code if bad. 
85000 mi

US $500
Replaced resonator. 
106700 mi

US $700
Upper and lower intake manifold gaskets, spark plugs, wires, valve cover gasket 
116000 mi

US $500
plugged catalytic converter 
122000 mi

US $20
engine started running rough and stalled. Check engine lite indicated mass air flow sensor. Removed and cleaned senor with mass airflow sensor cleaner. Runs fine since 
123500 mi While driving, I noticed the engine was running roughly. I tested the ignition coils and noticed that two were beginning to fail. I replaced these using pre-owned coils obtained from a friend for free. 
128000 mi The radiator fans stopped turning. I checked the motor and one is burnt out and the other is not but they do not work independently. I have not repaired because the engine will not overheat in the winter if I don't use air conditioning. 
135300 mi

US $80
Replaced radiator fan due to fan no longer working. 

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2002 Chevrolet Impala 4dr Sedan

180-horsepower 3.4L V6 4-speed automatic FWD

34500 mi

US $1400
Head and intake gaskets had to be replaced due to coolant leakage. Was one year out of warranty but less than 36,000 miles. General Motors was no help. Talked to a clerk in Washington state? No one from GM cares and they don't make this engine any mor 
78000 mi

US $550
Replaced for second time ignition switch - security system does not allow car to start because of defect in ignition system 
89700 mi

US $650
Check engine light on - replaced thermostat. 
49000 mi

US $10000
head gasket blown twice was under warranty 
193300 mi

US $287
New fuel pump 
184000 mi

US $480
Cracked exhaust resonator replaced. 
198700 mi Blown rear headgasket resulting in numerous other repairs. 
93000 mi

C $800
replace faulty gasket 
137640 mi

C $100
replace resonator 
146320 mi

C $400
engine light came on did an OBD2 meter check for code and found out it was emissions spoke with a mechanic to find out it was catalytic converter 
146320 mi

C $110
engine light came on, reading now says missing cylinder 1 replaced coil packs with used from wrecker. Engine light came back on and now says misfire on cylinder 5. Have not yet fixed  
147520 mi

C $170
replaced coil pack plugs and wires 
161200 mi

C $1300
would not start told it was ignition then BCM. 

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2001 Chevrolet Impala 4dr Sedan

200-horsepower 3.8L V6 4-speed automatic FWD

203300 mi

US $320
Intake manifold had a minor leak. i wanted to get repaired before it became worse. While in there, we also replaced the plenum (upper intake) gasket, valve cover gaskets, fuel injector o-rings, and thermostat. About $140 for parts 7 $180. 
108000 mi

US $410
Fuel tank pressure sensor became defective causing constant check engine light. Sensor repaired whcih required dismounting gas tank. 
123300 mi

US $483
Coolant leak caused by defective water pump. Replaced Water Pump. 
108700 mi

US $1100
Intake leaking coolant. Transmission pressure sensor/ valve bad. Causing rough, improper shifts. Possible issues with traction control caused by this as well. 
126000 mi

US $400
The ECM started giving EGR errors, A/C pressure sensor errors. The EGR and A/C pressure sensor were tested as well as the wiring. They checked out fine. The ECM was replaced and no errors have occurred since. 
93000 mi

US $250
Car stalled randomly, sometimes while driving 40 mph, sometimes after accelerating from a stop. Mechanic replaced the Crankshaft Sensor after experiencing the issue and pulling the codes. 

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2001 Chevrolet Impala 4dr Sedan

180-horsepower 3.4L V6 4-speed automatic FWD

62000 mi Coolant Sensor broken. This was repaired under warranty by a Chevy dealer once before but, broke again soon after. This other Chevy dealer decided to replace it and charge me for another repair and parts. 
164000 mi

US $650
Leak in oil pan and front main seal 
138847 mi Fuel pressure regulator replaced. Was leaking fuel, could smell it in cabin. Replaced plugs and wires. I mention it because it was a *(&#@$ nightmare to do without lifting the engine out. 4 hours. 

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2001 Chevrolet Impala / Monte Carlo

Engine not specified

321000 mi The intake plenum exploded and the engine caught fire at 321,000 miles. 

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2000 Chevrolet Impala 4dr Sedan

200-horsepower 3.8L V6 4-speed automatic FWD

82999 mi

US $4000
Replaced BCM, PCM, Passlock sensor, key cylinder, and still did not fix no crank issues. 
100000 mi

US $2475
Passlock issues that still are plaguing the car. Passlock issues; replaced BCM, Pssslock sensor, ignition switch, and key cylinder. Replaced BCM (again) and PCM. 
115000 mi

US $640
Oil pan gasket replacement. 
117000 mi

US $1400
Upper and lower intake manifold gaskets. Valve cover gaskets 

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2000 Chevrolet Impala 4dr Sedan

180-horsepower 3.4L V6 4-speed automatic FWD

53940 mi

C $184
CEL on, EGR failure, EGR replaced. 
82460 mi

C $1113
Low coolant light on, dealer diagnosed lower intake manifold gasket failure. Replaced gasket, coolant, oil, and low coolant level sensor. Years later I received a $400 class action settlement for this issue. 
127100 mi

C $350
Weak acceleration. Replaced spark plugs and wires. 
131440 mi

C $1005
Replaced four motor mounts and installed new front axle. 
146940 mi

C $462
Replaced original factory exhaust pipe. Muffler was fine but had to be replaced because the mechanic couldn't find or make a part to mate it with the new exhaust. 
150040 mi

C $232
Original thermostat replaced because engine wouldn't get up to temperature. Hose clamp replaced two days later. 
151280 mi

C $350
Replaced EGR valve 

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Chevrolet Impala Engine Problems

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