285-horsepower 4.2L I6 4-speed automatic 4WD w/low range
114000 mi US $400 |
water pump replaced |
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... |
285-horsepower 4.2L I6 4-speed automatic RWD
171000 mi US $150 |
running rough and skipping. they ran a cleaner through the engine and advised me to use higher octane gas. |
302-horsepower 5.3L V8 4-speed automatic RWD
105000 mi US $200 |
replaced #1 intake lifter |
291-horsepower 4.2L I6 4-speed automatic 4WD w/low range
79958 mi | Throttle body sensor failure. Entire unit replaced under warranty. |
214000 mi US $950 |
~Replace throttle body ~Replace camshaft position sensor |
Engine not specified
24000 mi | Gas gauge sensor |
90900 mi US $235 |
PCV valve malfunctioned causing oil to burn out thru exhaust. |
300-horsepower 5.3L V8 4-speed automatic RWD
76000 mi US $152 |
Oil pressure switch had to be replaced |
300-horsepower 5.3L V8 4-speed automatic 4WD w/low range
181200 mi US $2800 |
Replace engine Took 2 engines to find a good one |
291-horsepower 4.2L I6 4-speed automatic 4WD w/low range
97000 mi | ignition switch |
98000 mi US $4500 |
having lots of problems with computer now as well as many other problems in last 2yrs |
130000 mi US $700 |
thermostat and thermostat sensor replaced- still having check engine light come on. Believe issue to be electrical |
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. |
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. |
113800 mi US $50 |
Ignition relay went out causing a no start situation. |
123000 mi US $8 |
#7 spark plug packed full of carbon our something and started misfiring after only 26,000 miles since all plugs and wires were replaced. |
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. |
97340 mi C $300 |
Oil pressure gauge suddenly displayed zero pressure. Failed sensor, part replaced. Recommend preventative maintenance to replace oil filter screen (behind oil pressure sensor on 5.3s) |
54900 mi US $800 |
Water pump leaking - replaced water pump. |
135000 mi US $300 |
Serpentine belt idler pulley was making noise. Replaced it along with the tensioner and a new belt. |
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. |
90000 mi US $700 |
OBDII codes indicated the thermostat required replacement. Due to awkward location on this vehicle, I elected not to do it myself. also indicated front O2 sensor was failing. This is an easy replacement, but as it was going to the dealer, I had it done ny them. While in dealers another issue was diagnosed, and I authorized getting this taken care of too (can't remember details). |
291-horsepower 4.2L I6 4-speed automatic 4WD w/low range
155000 mi C $300 |
Fan clutch replaced in my driveway. Bearing seized on the old one. |
156860 mi C $1200 |
Gas smell but no leaks could be seen. Was the fuel pump assm that had corroded beyond repair and was leaking fuel into the depression at the top of the gas tank. Tank was removed, new fuel lines and pump installed. During the same time the 4x4 actuator was repaired. The fork replaced for $150 part cost the rest was cleaning it out and getting it working properly. |
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 |
300-horsepower 5.3L V8 4-speed automatic RWD
80000 mi US $2800 |
had to replace engine |
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. |
140000 mi US $200 |
Replaced water pump due to shaft seal leak. Also replaced ac belt and thermostat while it was taken apart. |
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. |
193440 mi C $350 |
Replaced exhaust resonator and the tail pipe. |
135000 mi US $1700 |
The catalytic converter failed due to an O-2 sensor problem. It was allowing unburned fuel to enter the converter and it caused it fail.The dealership replaced everything from the manifold to the tailpipe. |
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 |
187000 mi US $20 |
Water pump replaced Replaced serpentine belt tensioner |
189300 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. |
196751 mi US $70 |
Replace MAP (manifold absolute pressure) sensor |
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. |
300-horsepower 5.3L V8 4-speed automatic RWD
86100 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. |
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 |
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. |
169260 mi C $115 |
Water pump noisy . Purchased new pump and installed. |
40300 mi US $380 |
Water pump bearing failed causing noise like detonation. Entire water pump replaced. |
155000 mi | I had a local shop replace the exhaust manifold. |
160000 mi | Replaced oil pressure sensor |
290-horsepower 5.3L V8 4-speed automatic 4WD w/low range
68200 mi C $1200 |
Replaced fuel pump and fuel filter Replaced water pump |
65000 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 |
65000 mi US $2100 |
fuel pump belts squeaking |
82500 mi US $700 |
Radiator leaking |
275-horsepower 4.2L I6 4-speed automatic 4WD w/low range
160000 mi US $300 |
AN unauthorized tow driver, yanked our vehicle up onto a rollback while this RWD car was still in park! Next driver, moved car 100' over and proceeded to SHAKE it off his rollback and back down to the ground. PLUS, said driver damaged rear fascia where our trailer hookup is located....dumb driver damaged said fascia because they first attempted to tow our car WHILE still attached to our trailer! How do you spell dumb, and illegal?? |
85000 mi US $385 |
replaced drivers side wheel hub and ABS sensor |
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. |
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 |
275-horsepower 4.2L I6 4-speed automatic 4WD w/low range
78000 mi US $650 |
both forward and rear o2 sensors failed. they were 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. |
55800 mi | Air pump gate (valve) cleaned. Code P0410 |
57040 mi C $40 |
Relay for exhaust airpump sensor. |
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 |
65920 mi C $750 |
Fuel sending unit had rusted out from salt exposure. Tank removed, unit, fuel filter, and hose ends replaced. |
147000 mi US $600 |
Throttle Body replaced. |
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. |
290-horsepower 5.3L V8 4-speed automatic 4WD w/low range
141000 mi US $80 |
Replaced electro-viscous fan clutch (common issue) |
141000 mi US $200 |
Water Pump & Thermostat (preventative, done as part of fan clutch repair) Replaced drive belts & alternator (preventative, done as part of fan clutch repair) |
147000 mi | Small coolant leak from upper hose (had replaced 1yr earlier). Self-repaired. |
29372 mi | Replaced faulty Fan Clutch Assy - Warranty 1st occurrence - May 2004, 29372 miles Replaced faulty Fan Clutch Assy - Warranty 2nd occurrence - 32624 miles |
49845 mi | Replaced faulty Fan Clutch Assy - Warranty 3rd occurrence, July 2005, 49845 miles. Dealer covered as warranty item due to repeated failures |
64967 mi | Replaced Catalytic Converter, Y-Pipe, Gaskets, O2 Sensor & Road Tested - All covered as Warranty Items |
89805 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 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. |
275-horsepower 4.2L I6 4-speed automatic RWD
124000 mi US $1200 |
water pump broke and caused leak in radiator |
275-horsepower 4.2L I6 4-speed automatic 4WD w/low range
130900 mi US $1200 |
new muffler and tailpipe |
122760 mi C $150 |
Thermostat too old |
137000 mi US $80 |
Engine idling rough. Had throttle body cleaned and engine control module reflashed to clear errors. |
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. |
230091 mi US $1375 |
Overheating,determined water pump needed replacing. |
290-horsepower 5.3L V8 4-speed automatic RWD
512 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. |
34000 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. |
275-horsepower 4.2L I6 4-speed automatic RWD
80000 mi US $150 |
coolant thermostat needed replacement. |
52500 mi US $217 |
Replaced trans cooler line. |
97000 mi US $160 |
replace thermostat |
112000 mi US $1000 |
Rotted gas tank, crack was leaking gas. Replaced tank. |
164000 mi US $550 |
Water pump |
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. |
275-horsepower 4.2L I6 4-speed automatic 4WD w/low range
111200 mi US $200 |
CAM SENSOR + 02 SENSOR |
45000 mi | Under extended warranty. Vehicle stalls occassionally. |
173600 mi C $1003 |
Serpentine belt tensioner worn and rattles |
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. |
193000 mi US $415 |
Finally, I have had intermidiant power failures for the past 13 Months. I have had several differant shops look into this problem and no one was able to duplicate the problem. It was a dangerious problem, if you had a speed set, you would lose power then in 2 to 5 seconds later, the trans. would kick down 2 gears, take off and throw you back int he seats. I had Leith GM, Wake Forest,NC. Look into the problem and they were able to duplicate the problem. They scanned during a test drive and it showed a "Flat line" upline O2 sensor and flagged rich and lean codes. Be advised that this O2 sensor NEVER shot a code as a failure. The O2 sensor was replace and 2 Flash software updates to the ECM and I am golden. I really like this SUV and I hope to dive it till the wheels fall off, knock on wood... or a sensor |
194000 mi US $400 |
Leaking Coolant fluid. Replaced both heater core hoses, main top radiator hose and radiator cap. Did have to take it back so that they could tighten down the hose clamps again. |
116500 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 |
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). |
96720 mi C $800 |
The fuel pump was leaking. Bad fuel smell from the back. Fuel pump was replaced . |
101340 mi C $75 |
Replaced water pump |
114700 mi | Tightened clamp on upper radiator hose |
210000 mi US $325 |
ignition coil failed |
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. |
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 |
Engine not specified
197000 mi | 4 wheel alignment, radiator replacement. |
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. |
270-horsepower 4.2L I6 4-speed automatic RWD
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 |
177000 mi US $350 |
engine stalled repeatedly |
144000 mi US $360 |
Replaced thermostat |
270-horsepower 4.2L I6 4-speed automatic 4WD w/low range
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 |
97000 mi US $87 |
Misfire on #1 cyl. Replaced Spark Plugs first. Replaced coil pack for #1 cylinder to fix problem |
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. |
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? |
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; |
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. |
33286 mi | Fan clutch replaced under warranty |
151447 mi US $1034 |
Replace engine mounts and transmission mount. |
164186 mi US $306 |
Serpentine Belt Idler Pulley Serpentine Belt Tensioner |
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 |
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 |
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. |
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. |