GMC Envoy GMC Envoy

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GMC Envoy repairs by problem area

Engine (33%)

Transmission and Drivetrain (8%)

Brakes and Traction Control (3%)

Suspension and Steering (23%)

Electrical and Air Conditioning (25%)

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

Other (5%)

Chart based on 452 repairs.
See TSBs and recalls for the GMC Envoy.

GMC Envoy engine repair cost distribution

$2500+ (1%)

$1000 - $2499 (13%)

$500 - $999 (11%)

$100 - $499 (37%)

< $100 (38%)

Chart based on 134 repair trips. The repair cost chart excludes repairs made under warranty, do-it-yourself repairs, and repair trips that include maintenance.

2008 GMC Envoy 4dr SUV

300-horsepower 5.3L V8 4-speed automatic 4WD w/low range

125000 mi

US $250
Tried to tow, threw blink CEL (Very Bad) later added P0420 to the CEL mix. Replaced all four O2 sensors. Changing them out is a major pain! But it IS doable if you're skinny, flexible and willing to sacrifice your face and arms... 

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2006 GMC Envoy

Engine not specified

24000 mi Gas gauge sensor 
90900 mi

US $235
PVC valve malfunctioned causing oil to burn out thru exhaust. 

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2006 GMC Envoy 4dr SUV, ext.

300-horsepower 5.3L V8 4-speed automatic RWD

76000 mi

US $152
Oil pressure switch had to be replaced 

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2006 GMC Envoy 4dr SUV, ext.

291-horsepower 4.2L I6 4-speed automatic 4WD w/low range

65720 mi

C $320
Was getting CEL due to throttle errors and misfires. Dealer indicated throttle body needed to be cleaned, charged $90 for a cleaning. 
65720 mi CEL flashing and vehicle shaking badly at a stop. Advised by OnStar not to drive and have it towed (constantly misfiring). Dealer replaced camshaft solenoid and position sensor. 
97000 mi ignition switch 
98000 mi

US $4500
having lots of problems with computer now as well as many other problems in last 2yrs 

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2006 GMC Envoy 4dr SUV

300-horsepower 5.3L V8 4-speed automatic 4WD w/low range

97000 mi

US $115
#7 cylinder miss fire at 97,000 miles, part of cyramic was missing near tip of spark plug and near fouled. Had to replace spark plug wires since a couple tore. Very hard to get to #1 on driver side and all of passenger side. 
108000 mi

US $130
Water pump leaking, so I replaced it. 
113700 mi

US $50
Ignition relay went out causing a no start situation. 
52000 mi Crank was worn, engine was replaced 
52000 mi new engine shipped to shop without updated valve covers. Gm has service bulliten from 2008 that special valve covers are needed because of new lifters that supply more oil. Oil was being sucked into the intake. 450 miles lost 2.5Q oil. 
54900 mi

US $800
Water pump leaking - replaced water pump. 

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2006 GMC Envoy 4dr SUV

291-horsepower 4.2L I6 4-speed automatic RWD

22000 mi Fuel tank level sensor module failed. Replaced under warranty. No problems. 
25000 mi Engine misfiring. Problem traced to ignition coil(s)for cylinders 1 & 2. Coils replaced. Fault no longer apparent. 
33000 mi

US $315
Carbon build up affecting performance. De-coke and injector cleaning carried out. 
76000 mi

US $600
Vibration in vehicle at idle. Fan clutch and water pump replaced. Fault no longer apparent. 
78000 mi

US $57
Emissions Evap. System. Fault codes P0445, P0449. Got Code P0445, and "tighten filler cap" message. Replaced filler cap. Got code P0449. Replaced Evap canister solenoid. Fault no longer apparent. 

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2005 GMC Envoy

Engine not specified

103000 mi Check engine light emissions problem was still unrepaired when it was traded. 
83080 mi Check engine light on - replaced sensor then found out was gas cap that had deteriorated 

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2005 GMC Envoy 4dr SUV, ext.

300-horsepower 5.3L V8 4-speed automatic 4WD w/low range

110000 mi

US $5
Vehicle experienced noticeable miss at idle, eventually throwing a check engine light for multiple misfire detected. Replaced a cracked spark plug. 

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2005 GMC Envoy 4dr SUV, ext.

275-horsepower 4.2L I6 4-speed automatic 4WD w/low range

134540 mi

C $50
Engine trouble code for thermostat problem. Thermostat stuck open, low coolant temperature. Thermostat replaced. Idler pulley bearing loose play. Replaced Idler pulley. 
141980 mi

C $7
Leaky radiator cap. Replaced rad cap. 
154120 mi

C $100
Rear Heater Core leaking. Cut unit out so don't have to recharge AC system. Purchased new unit and installed myself using copper unions to connect back into system. 
166460 mi

C $450
catalytic converter plugged up and ineffective, reducing engine performance. 
182280 mi

C $65
Replaced cooling system thermostat. This was a second time the thermostat needed replacement in 3 years. 
190960 mi

C $100
Water pump replaced. Ignition coil on number 1 cylinder replaced by owner. 
170500 mi Trouble code PO014. Camshaft Position. Just change the oil and see if that fixes. My SUV throws this code sometimes if the oil needs changed. 
174500 mi

US $50
New Oil Pressure sensor 
186500 mi

US $20
Water pump replaced Replaced serpentine belt tensioner 
187600 mi

US $45
Replaced Variable valve camshaft timing solenoid 
194000 mi

US $100
Replaced camshaft position sensor, replaced 1 coil pack and cleaned throttle body. The real problem is dimming lights whenever I accelerate up a hill. 
93000 mi

US $400
Replacement of water pump - was not yet leaking but was making squeaking noise. 
107000 mi

US $220
CEL came on. Onstar diagnostic said cooling system problem. Local shop diagnosed defective thermostat and replaced. 

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2005 GMC Envoy 4dr SUV

300-horsepower 5.3L V8 4-speed automatic RWD

107700 mi

US $959
Intermittent non-start situation when warm. Also cut-out while driving after 20 - 30 minutes. They changed the electronic module board, cleaned and adjusted throttle body and did some minor rewiring. Repairs themselves took four days. 

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2005 GMC Envoy 4dr SUV

275-horsepower 4.2L I6 4-speed automatic RWD

79000 mi

US $220
Problem was detected in the cooling system. Thermostat not opening properly, but engine was not yet overheating. Replaced thermostat assembly 

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2005 GMC Envoy 4dr SUV

275-horsepower 4.2L I6 4-speed automatic 4WD w/low range

63860 mi Secondary air check valve rusted and stuck. 
112840 mi

C $130
Cooling fan Clutch .Code P0526 
124380 mi

C $100
Engine did not reach operating temperature by the alloted time .ODBii code P0128 .Changed Thermostat and coolant Temperature sensor. 
145700 mi

C $430
Exhaust leak. Had muffler replaced. 
146500 mi

C $90
Code P0410 Secondary emission control valve was bad.I purchased part at dealer and replaced valve. 
40300 mi

US $380
Water pump bearing failed causing noise like detonation. Entire water pump replaced. 

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2004 GMC Envoy 4dr SUV, ext.

290-horsepower 5.3L V8 4-speed automatic 4WD w/low range

47500 mi

US $700
Radiator leaking 
68200 mi

C $1200
Replaced fuel pump and fuel filter Replaced water pump 
65000.0 mi

US $100
cat converter needed to be replaced.took it to and indempendent shop and they diagnosed, told me that part is covered by gm for 8yrs and dealership should do for zero charge, they did. Cost $100 at first shop cat converter needed to be replaced.took it to and indempendent shop and they diagnosed, told me that part is covered by gm for 8yrs and dealership should do for zero charge, they did. Cost $100 at first shop 
127000 mi

US $2100
fuel pump belts squeaking 

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2004 GMC Envoy 4dr SUV, ext.

275-horsepower 4.2L I6 4-speed automatic 4WD w/low range

135000 mi

US $150
manifold cracked, purchased a new one and installed. 
146300 mi

US $1600
Miss on cylinder 6, new plugs, replaced coil pack, found it had burned exhaust valve. 
85000.0 mi

US $385
replaced drivers side wheel hub and ABS sensor 

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2004 GMC Envoy 4dr SUV

290-horsepower 5.3L V8 4-speed automatic 4WD w/low range

176300 mi

US $60
Replace front oxygen sensor 
178000 mi

US $150
Replace radiator 
178200 mi

US $115
Replace thermostat, idler pulley, tensioner pulley, belt 

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2004 GMC Envoy 4dr SUV

275-horsepower 4.2L I6 4-speed automatic 4WD w/low range

55800 mi Air pump gate (valve) cleaned. Code P0410 
57040 mi

C $40
Relay for exhaust airpump sensor.  
78000 mi

US $650
both forward and rear o2 sensors failed. they were replaced 
147000 mi

US $600
Throttle Body replaced.  
65920 mi

C $750
Fuel sending unit had rusted out from salt exposure. Tank removed, unit, fuel filter, and hose ends replaced. 
68000 mi Envoy went in for Check engine light turned out to be a air pump sensor.  While in shop they noticed the water pump was leaking. Replaced. Fan clutch was also replaced. They also noticed that the cam actuator solenoid was leaking. Replaced. 
78000 mi

US $35
The AIR system comtinues to give multiple problems on this model year GM Vehicle. A drop of water can freeze in the pump and cause these un-desired effects. In my professional opinion it is caused by another GM Design flaw. I took the piping loose and ble 

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2004 GMC Envoy 4-door

4-cylinder automatic 2WD

117000 mi

US $187
misfire at cyl6 after changing plugs and fuel filter. Checked plugs for cracking and gap, no problems, compression test okay, fuel economy has declined by 25%. Coils okay. no stalling, hesitation, or overheating, idles roughly. 

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2003 GMC Envoy 4dr SUV, ext.

290-horsepower 5.3L V8 4-speed automatic 4WD w/low range

29372.0 mi Replaced faulty Fan Clutch Assy - Warranty 1st occurrence - May 2004, 29372 miles Replaced faulty Fan Clutch Assy - Warranty 2nd occurrence - 32624 miles 
49845.0 mi Replaced faulty Fan Clutch Assy - Warranty 3rd occurrence, July 2005, 49845 miles. Dealer covered as warranty item due to repeated failures 
64967.0 mi Replaced Catalytic Converter, Y-Pipe, Gaskets, O2 Sensor & Road Tested - All covered as Warranty Items  
89805.0 mi Emerg Repairs (Brandywine, Md. GM Dealer) - Would not run, Performed Diagnostic & replaced #3 spark plug (cracked). Md dealer reported 1/2 plugs/wires were original, GM Dealer (Pa) absorbed cost  
91593.0 mi Pa. GM Dealer Installed new Plugs & Wires (from prior svce charged / originally reported as completed but NOT performed)  
137100 mi

US $323
hard miss/vac lk suspected - diag, repair air intake cowling, replaced oil press & fuel lvl sensors, replace wtr pump & hose, flush radiator, replace serpentine belts check engine soon light came on again and hard miss from prior visit continued, only worse. dealer now found vac leak in lower intake manifold gasket. dealer replaced gasket. 

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2003 GMC Envoy 4dr SUV, ext.

275-horsepower 4.2L I6 4-speed automatic RWD

124000 mi

US $1200
water pump broke and caused leak in radiator 

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2003 GMC Envoy 4dr SUV, ext.

275-horsepower 4.2L I6 4-speed automatic 4WD w/low range

192000 mi

US $524
Flashing engine light. Replaced number 4 coil and spark plug. 
204000 mi

US $75
Engine light flashing feels like misfire, produced P0300 code. Replaced Fuel Filter, no change. Reset Engine light second time it produce P0301 code. Replaced Cylinder 1 ignition coil. 
122760 mi

C $150
Thermostat too old 
130900 mi

US $1200
new muffler and tailpipe 

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2003 GMC Envoy 4dr SUV

290-horsepower 5.3L V8 4-speed automatic RWD

512.0 mi The computer's fuel management system was malfunctioning, and as a result the engine was missing, the CEL and reduced engine power light turned on. This occurred only 3 days after purchase of the vehicle. The ECU was exchanged for a new one. The computer's fuel management system was malfunctioning, and as a result the engine was missing, the CEL and reduced engine power light turned on. This occurred only 3 days after purchase of the vehicle. The ECU was exchanged for a new one. 
34000.0 mi The radiator's fan clutch failed, so the engine started to overheat sometimes in traffic. The repair took two days, but a free rental was given and the cost of repair was covered under warranty. The radiator's fan clutch failed, so the engine started to overheat sometimes in traffic. The repair took two days, but a free rental was given and the cost of repair was covered under warranty. 

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2003 GMC Envoy 4dr SUV

275-horsepower 4.2L I6 4-speed automatic RWD

52500.0 mi

US $217
Replaced trans cooler line. Replaced trans cooler line. 
97000.0 mi

US $160
replace thermostat replace thermostat 
112000 mi

US $1000
Rotted gas tank, crack was leaking gas. Replaced tank. 
80000.0 mi

US $150
coolant thermostat needed replacement. coolant thermostat needed replacement. 
90000 mi

US $100
Bad Thermostat per service engine soon code Water pump bearings making rumbling noise 
95000 mi

US $300
Water pump bad 
114000 mi

US $500
Engine light on- replaced gas cap. radiator cap leaking- replaced. 
129200 mi

US $475
Check engine light on- replaced purge solonoid 
186000 mi Plugged converter caused from thermostat not being a high enough temperature. Should run at 210 degrees. 

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2003 GMC Envoy 4dr SUV

275-horsepower 4.2L I6 4-speed automatic 4WD w/low range

101680 mi

C $320
Oxygen sensor one of four not working and replaced. 
104160 mi

C $1800
exhaust manifold cracked and was replaced cooling fan clutch noisy and replaced 
210000 mi

US $325
ignition coil failed 
96720 mi

C $800
The fuel pump was leaking. Bad fuel smell from the back. Fuel pump was replaced . 
132000 mi Viscous fan/clutch assembly replaced – Tech bulletin. I was having problems with AC cooling at stops. Coolant Thermostat and hoses replaced that were needed. The Coolant and needed hoses were replaced at 110,000 as well. Timing chain and entire timing assembly including exhaust valve actuator replaced. Cam position sensor replaced, leaking at the connector. Water pump replaced. Oil pump and pan assemble rebuilt/cleaned. Intake manifold / Mass air flow disassembled cleaned and gaskets replaced, Small gasket leak around coil # 2 was found. 
144700 mi

US $150
Upstream O2 sensor was replaced. no code was thrown, replaced on systematic low gas mileage around 13 MPG. Used a scan tool and saw the upstream O2 sensor voltage readings was not moving. 
180000 mi

US $400
GMC had been running rough for about 2 Months. Service Engine Soon light illuminated,, Took car to PEP Boys, 2 Codes for Cam position sensor and throttle body and the replaced the Throttle Body and Cam position sensor. Rough idle is now gone 
183900 mi Intermittent loss of power during cruising speeds. Fuel pressure was checked and there were no codes. Still have the issue but unable to find the source of the issue. 
111200 mi

US $200
CAM SENSOR + 02 SENSOR 
116500.0 mi

US $250
replace two coils for firing engine 
137700 mi

US $60
fan clutch replaced, quit working 
139500 mi

US $65
replace bad thermostat, replace temperature sensor 
142300 mi

US $20
belt tension started rattling 
137000 mi

US $80
Engine idling rough. Had throttle body cleaned and engine control module reflashed to clear errors. 
101340 mi

C $75
Replaced water pump 
166500 mi Sputtering, needed new plugs (threw P0305 code) 
170000 mi

US $84
Had to replace the coil pack on #4 cylinder due to water damage (common problem on the 6 cylinder Envoys). 
91000 mi

US $48
When A/C on, RPM fluctuated. It was diagnosed the throttle body sensor was not working. Replaced with used part (extended warranty did not want to pay for a new part at $322). It appears new part also fixed the cruise control problem. 
123700 mi

US $430
Ignition not working on a few occasions. Replaced faulty ignition switch. 
45000.0 mi Under extended warranty. Vehicle stalls occassionally. Under extended warranty. Vehicle stalls occassionally. 

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2002 GMC Envoy

Engine not specified

197000 mi 4 wheel alignment, radiator replacement. 

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2002 GMC Envoy 4dr SUV, ext.

270-horsepower 4.2L I6 4-speed automatic 4WD w/low range

140000 mi

US $2251
Rear seating area heater core leaking. Removed and replaced. 

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2002 GMC Envoy 4dr SUV

270-horsepower 4.2L I6 4-speed automatic RWD

177000 mi

US $350
engine stalled repeatedly 
144000 mi

US $360
Replaced thermostat 
101000 mi

US $55
minor radiator leak - fixed with Bar's Leaks sealant 
106000 mi

US $270
ignition coil failure. 
114000 mi

US $400
Replaced water pump 

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2002 GMC Envoy 4dr SUV

270-horsepower 4.2L I6 4-speed automatic 4WD w/low range

118000 mi

US $1000
Blown head - needed the entire engine rebuilt. We sold it to a friend who had it repaired and is now driving it. 
360000 mi

US $900
Cylinder #1 not firing. Wires and plugs replaced. Throttle body badly worn, replaced rather than clean. 
362000 mi

US $2200
Water pump; hoses, serpentine belt; 
97000 mi

US $87
Misfire on #1 cyl. Replaced Spark Plugs first. Replaced coil pack for #1 cylinder to fix problem 
122000 mi

US $1358
Replaced engine belt and tensioner 
124000 mi Leaking gas tank, discovered during the May 2016 visit to the service department, was replaced by GM on August 29, 2016. Will be picking up the vehicle this morning, August 30 from the dealer shop. 
203000 mi

US $366
MAP sensor, fuel induction cleaning, reprogram PCM 
203000 mi Lifter noise, engine seals/ gaskets starting to leak, transfer case issues - maybe the sequencing switch? 
107000 mi

US $78
Replaced ignition coil on cylinder #3. 
120000 mi

US $28
Replaced oil pressure sender 
122000 mi

US $134
P1440 code set - Evap System Fauly 
131000 mi

US $304
Replaced cat-back exhaust system. 
140000 mi

US $52
Leaking gas. Replaced fuel pump module, fuel filter 
90000 mi

US $550
Check engine light was coming on. Car diagnosed with multiple engine misfires. Replaced cam sensor. 
92000 mi

US $550
Car continued to miss. Determination was a coil, after substantial testing. Coil replaced. 
92000 mi Misfiring again three weeks later, replaced another coil. 
51000 mi

US $635
#1 cylinder misfiring causing rough engine idling. Ignition coil replaced. 
53000 mi

US $1200
More bad ignition coils needed to be replaced. Vehicle accelerated poorly and seemed underpowered, then Service Engine Light came on. Also found bad plugs and a melted wire. The shop then found a leaky seal and replaced it. 
51240 mi

C $1600
Warning light with wrench and oil can/truck icon stays on for a few seconds upon starting up after all the other test lights show and go off, but this light goes away after a few seconds. 
57040 mi

C $100
Muffler starting to rattle when idling. 
66540 mi

C $300
Curved pipe on the end of the Muffler fell off on highway, now sounds like a V8 4 barrel 
68200 mi

C $1100
Clutch fan went. Sounded like it was stuck in low gear, and hard to shift. Thought it was tranny, but the clutch fan was loud. Took 3 hours book time to replace something that should be <1 hour. Cost 1,000 
167700 mi

US $800
Replaced water pump and thermostat 
170000 mi

US $1600
6x ignition coil replacement due to misfire in #4 / lifespan of component 

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GMC Envoy Engine Problems

See our lemon odds and nada odds page to see vehicles with no repairs or vehicles with more than three repairs. To see how frequently GMC Envoy problems occur, check out our car reliability stats.