| 1 | 0 | 3 | 4 | 3 | 4 |
2003 GMC Envoy repairs by problem area
Engine (36%)
Transmission and Drivetrain (10%)
Brakes and Traction Control (4%)
Suspension and Steering (19%)
Electrical and Air Conditioning (24%)
Paint, Rust, Leaks, Rattles, and Trim (2%)
Other (4%)
Chart based on 160 repairs.
2003 GMC Envoy engine repair cost distribution
$2500+ (0%)
$1000 - $2499 (14%)
$500 - $999 (8%)
$100 - $499 (34%)
< $100 (44%)
Chart based on 50 repair trips. The repair cost chart excludes repairs made under warranty, do-it-yourself repairs, and repair trips that include maintenance.
2003 GMC Envoy
Engine not specified
| 137000 mi US $80 |
Engine idling rough. Had throttle body cleaned and engine control module reflashed to clear errors. |
2003 GMC Envoy 4dr SUV, ext.
290-horsepower 5.3L V8 4-speed automatic 4WD w/low range
| 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. |
| 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. |
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 |
2003 GMC Envoy 4dr SUV, ext.
275-horsepower 4.2L I6 4-speed automatic 4WD w/low range
| 122760 mi C $150 |
Thermostat too old |
| 130900 mi US $1200 |
new muffler and tailpipe |
| 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. |
2003 GMC Envoy 4dr SUV
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. |
2003 GMC Envoy 4dr SUV
275-horsepower 4.2L I6 4-speed automatic RWD
| 80000 mi US $150 |
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. |
| 164000 mi US $550 |
Water pump |
| 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. |
2003 GMC Envoy 4dr SUV
275-horsepower 4.2L I6 4-speed automatic 4WD w/low range
| 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. |
| 111200 mi US $200 |
CAM SENSOR + 02 SENSOR |
| 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 |
| 173600 mi C $1003 |
Serpentine belt tensioner worn and rattles |
| 96720 mi C $800 |
The fuel pump was leaking. Bad fuel smell from the back. Fuel pump was replaced . |
| 45000 mi | Under extended warranty. Vehicle stalls occassionally. |
| 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 |
| 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. |
| 101340 mi C $75 |
Replaced water pump |
| 114700 mi | Tightened clamp on upper radiator hose |
| 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). |
See TrueDelta's information for all SUVs
See TrueDelta's information for all GMC models.
