Gmc Envoy (1998–2009) Technical Guide — DTC, Fluids & Parts | TroubleAtlas

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Gmc Envoy (1998–2009)
TROUBLEATLAS · SCOREINDEPENDENT · VERIFIED★★TA7.6/10
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GMC ENVOY (1998–2009) — Technical Guide, Fault Codes & Maintenance

By TroubleAtlas Technical Team · Updated 3 July 2026 · Cross-checked against 3 independent sources
Built 1998–2009 · all production years covered on this single page

4.2L I6 • Gasoline

2009
Gmc Envoy (1998–2009)

© Wikimedia Commons CC BY-SA

5 Common problems View details →
14 OBD2 codes View details →
37 Recalls / TSB View details →
TroubleAtlas Score
An independent value score for the Gmc Envoy (1998–2009) — reliability, safety, cost, parts, upkeep and documentation. Owing nothing to the manufacturer.
Scorecard · each voice 0–10
Reliability
n/a
Safety & recalls
n/a
Repair cost
n/a
Parts & repairability
7.6
Maintenance & durability
n/a
Documentation & support
n/a
★ How we calculate this → Methodology
TROUBLEATLAS · SCOREINDEPENDENT · VERIFIED★★TA7.6/10
Independent · Verified · Never for sale

Every figure on this Gmc Envoy (1998–2009) page is aggregated and cross-checked against more than 6.6 million real workshop operations, NHTSA records and OEM technical sources — and updated continuously. No invented estimates.

The Gmc Envoy (1998–2009) is powered by a 4.2L I6 engine. Use the sections below for verified fluids, battery, OEM tyres, the maintenance schedule, recommended parts and the most commonly reported OBD2 fault codes for this vehicle.

⚠️Common problems 🔧Common repairs 💧Fluids & lubricants 🔋Battery 🔌Fault codes (OBD2) 🔴Dashboard lights 🛒Parts comparator 🔧Accessories & tools 🛞Tyres 📋Recalls & TSB 📢Complaints 📍Workshops nearby
⚠️ COMMON PROBLEMS
Transmission fault signal (TCM)MODERATE

The transmission module detected a fault — check separate transmission codes.

Related codes: P0700

Misfire / Loss of cylinderMODERATE

Rough running, idle vibration, power loss.

Related codes: P0300

Thermostat: coolant temperature lowLOW

Thermostat stuck open — engine does not reach operating temperature.

Related codes: P0128

Battery/system voltage lowLOW

System voltage below 10V — check alternator, battery or wiring.

Related codes: P0562

P0011LOW

Check with an OBD2 scanner.

Related codes: P0011

💰 AVERAGE INDICATIVE COSTS

Prices may vary by area and workshop.

🔧
Full service
€ 120 – € 200
🛑
Full brake service
€ 180 – € 300
⚡
Spark plug replacement
€ 80 – € 140
📊
Electronic diagnosis
€ 40 – € 70
💵 WORKSHOP LABOUR RATES BY COUNTRY

Average independent-workshop hourly labour rates, to estimate repair costs in your country.

🇩🇪Germany€95/h
🇪🇸Spain€55/h
🇫🇷France€75/h
🇮🇹Italy€45/h
🇬🇧UK£80/h
🇺🇸USA$120/h
Reference rate
€45/h
Source: Eurostat 2024
💧 FLUIDS & LUBRICANTS
📋 RECALLS & TSB (37)
NHTSA 06V417000
Air Bags › Frontal
Date: 31/10/2006
CERTAIN VEHICLES ORIGINALLY BUILT WITH CLOTH SEATS THAT WERE EQUIPPED WITH AN AUTOMATIC AIR BAG PASSENGER SENSING SYSTEM AND LATER REUPHOLSTERED WITH AFTERMARKET LEATHER SEAT COVER KITS ARE INVOLVED. TESTING HAS INDICATED THAT THE AFTERMARKET LEATHER SEAT COVERS CAN CAUSE THE PA…
NHTSA 06V417000
Air Bags › Frontal
Date: 31/10/2006
CERTAIN VEHICLES ORIGINALLY BUILT WITH CLOTH SEATS THAT WERE EQUIPPED WITH AN AUTOMATIC AIR BAG PASSENGER SENSING SYSTEM AND LATER REUPHOLSTERED WITH AFTERMARKET LEATHER SEAT COVER KITS ARE INVOLVED. TESTING HAS INDICATED THAT THE AFTERMARKET LEATHER SEAT COVERS CAN CAUSE THE PA…
NHTSA 98V097001
Exterior Lighting
Date: 28/09/1998
THE DAYTIME RUNNING LIGHTS WERE BUILT WITH A CANDELA VALUE GREATER THAN 2,600, ARE LOCATED LESS THAN 100MM FROM THE TURN SIGNALS AND HAZARD WARNING LAMPS, AND ARE NOT DEACTIVATED WHEN THE TURN SIGNAL OR HAZARD WARNING LAMPS ARE ACTIVATED. THIS DOES NOT COMPLY WITH FMVSS NO. 108,…
NHTSA 04V201000
Seat Belts
Date: 28/04/2004
CERTAIN LIGHT DUTY PICKUP TRUCKS AND SPORT UTILITY VEHICLES FAIL TO CONFORM TO FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 209, "SEAT BELT ASSEMBLIES." ONE OF THE TWO SENSORS IN THE DRIVER'S AND FRONT PASSENGER'S SEAT BELT RETRACTORS COULD BE INOPERATIVE. THE SEAT BELT RETRACTOR…
NHTSA 07E014000
Exterior Lighting › Headlights
Date: 26/02/2007
CERTAIN MAXZONE HEADLIGHT ASSEMBLIES, DEPO BRAND, P/NO 335-1120L-AS, SOLD FOR USE AS AFTERMARKET EQUIPMENT FOR THE ABOVE LISTED PASSENGER VEHICLES. DURING PRODUCTION THE LAMP HOUSING SHAPE DEFORMED DISTORTING THE ASSEMBLY ANGLE OF THE REFLECTOR AND INFLUENCED THE AIMING POSITION…
NHTSA 07E014000
Exterior Lighting › Headlights
Date: 26/02/2007
CERTAIN MAXZONE HEADLIGHT ASSEMBLIES, DEPO BRAND, P/NO 335-1120L-AS, SOLD FOR USE AS AFTERMARKET EQUIPMENT FOR THE ABOVE LISTED PASSENGER VEHICLES. DURING PRODUCTION THE LAMP HOUSING SHAPE DEFORMED DISTORTING THE ASSEMBLY ANGLE OF THE REFLECTOR AND INFLUENCED THE AIMING POSITION…
NHTSA 07E014000
Exterior Lighting › Headlights
Date: 26/02/2007
CERTAIN MAXZONE HEADLIGHT ASSEMBLIES, DEPO BRAND, P/NO 335-1120L-AS, SOLD FOR USE AS AFTERMARKET EQUIPMENT FOR THE ABOVE LISTED PASSENGER VEHICLES. DURING PRODUCTION THE LAMP HOUSING SHAPE DEFORMED DISTORTING THE ASSEMBLY ANGLE OF THE REFLECTOR AND INFLUENCED THE AIMING POSITION…
NHTSA 07E014000
Exterior Lighting › Headlights
Date: 26/02/2007
CERTAIN MAXZONE HEADLIGHT ASSEMBLIES, DEPO BRAND, P/NO 335-1120L-AS, SOLD FOR USE AS AFTERMARKET EQUIPMENT FOR THE ABOVE LISTED PASSENGER VEHICLES. DURING PRODUCTION THE LAMP HOUSING SHAPE DEFORMED DISTORTING THE ASSEMBLY ANGLE OF THE REFLECTOR AND INFLUENCED THE AIMING POSITION…
NHTSA 15V599000
Visibility › Power Window Devices And Controls
Date: 24/09/2015
General Motors LLC (GM) is recalling certain model year 2006-2007 Buick Rainier, Chevrolet Trailblazer and GMC Envoy vehicles, and 2006 GMC Envoy XL and Chevrolet Trailblazer EXT vehicles. Fluid may enter into the driver's door master power window switch module, causing corrosio…
NHTSA 15V599000
Visibility › Power Window Devices And Controls
Date: 24/09/2015
General Motors LLC (GM) is recalling certain model year 2006-2007 Buick Rainier, Chevrolet Trailblazer and GMC Envoy vehicles, and 2006 GMC Envoy XL and Chevrolet Trailblazer EXT vehicles. Fluid may enter into the driver's door master power window switch module, causing corrosio…
NHTSA 02V121000
Fuel System, Gasoline › Delivery › Hoses, Lines/Piping, And Fittings
Date: 23/08/2002
ON CERTAIN SPORT UTILITY VEHICLES, A FUEL FILTER FITTING CAN BECOME DISCONNECTED. IF THIS WERE TO OCCUR WHILE ATTEMPTING TO START THE ENGINE, A NO-START CONDITION WOULD RESULT AND FUEL WOULD BE PUMPED OUT THE FUEL FILTER ONTO THE GROUND.
NHTSA 04V289000
Engine And Engine Cooling
Date: 23/06/2004
SOME SPORT UTILITY VEHICLES EQUIPPED WITH AN ELECTRONICALLY CONTROLLED AIR SUSPENSION (ECAS) HAVE A CONDITION IN WHICH THE ECAS MAY PRODUCE A BRIEF ELECTRICAL SPIKE WHILE THE VEHICLE IS OPERATING. THIS ELECTRICAL SPIKE CAN DISRUPT THE POWERTRAIN CONTROL MODULE (PCM) CAUSING THE …
NHTSA 03V096000
Electrical System › Wiring › Interior/Under Dash
Date: 19/03/2003
CERTAIN SPORT UTILITY VEHICLES FAIL TO COMPLY WITH THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARDS NO. 101, "CONTROL LOCATION, IDENTIFICATION, AND ILLUMINATION" AND NO. 208, "OCCUPANT CRASH PROTECTION." THESE VEHICLES HAVE AN INTERMITTENT CONDITION DURING VEHICLE STAR…
NHTSA 01V334000
Power Train › Transfer Case (4-Wheel Drive)
Date: 17/10/2001
VEHICLE DESCRIPTION: SPORT UTILITY VEHICLES EQUIPPED WITH 4-WHEEL DRIVE. THE CALIBRATION OF THE TRANSFER CASE CONTROL MODULE COULD CAUSE INSUFFICIENT HIGH SPEED GEAR ENGAGEMENT.
NHTSA 12V406000
Electrical System
Date: 16/08/2012
General Motors (GM) is recalling certain model year 2006 Chevrolet Trailblazer EXT and GMC Envoy XL and 2006-2007 Chevrolet Trailblazer, GMC Envoy, Buick Rainier, SAAB 9-7x, and Isuzu Ascender vehicles, originally sold or currently registered in Connecticut, Delaware, Illinois, I…
NHTSA 12V406000
Electrical System
Date: 16/08/2012
General Motors (GM) is recalling certain model year 2006 Chevrolet Trailblazer EXT and GMC Envoy XL and 2006-2007 Chevrolet Trailblazer, GMC Envoy, Buick Rainier, SAAB 9-7x, and Isuzu Ascender vehicles, originally sold or currently registered in Connecticut, Delaware, Illinois, I…
NHTSA 01V158000
Structure › Body
Date: 16/05/2001
VEHICLE DESCRIPTION: CERTAIN SPORT UTILITY VEHICLES FAIL TO COMPLY WITH REQUIREMENTS OF FMVSS NO. 201, "OCCUPANT PROTECTION IN INTERIOR IMPACTS." THESE VEHICLES HAVE A CONSOLE COVER/ARMREST LID LATCH THAT COULD RELEASE AT LESS THAN THE 10G VERTICAL LOAD REQUIREMENT OF THE STAND…
NHTSA 03V250000
Equipment › Other › Owners/Service/Other Manual
Date: 15/07/2003
CERTAIN MINIVANS, PASSENGER AND SPORT UTILITY VEHICLES FAIL TO COMPLY WITH THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 225, "CHILD RESTRAINT ANCHORAGE SYSTEM." THE OWNER'S MANUAL DOES NOT EXPLAIN THE MEANING OF THE LOCATION SYMBOLS FOR THE CHILD RESTRAINT LOWER…
NHTSA 15V519000
Exterior Lighting › Headlights
Date: 14/08/2015
General Motors LLC (GM) is recalling certain model year 2007 Pontiac Grand Prix, 2006-2009 Buick LaCrosse, 2006-2007 Buick Rainier, Chevrolet Trailblazer, GMC Envoy, 2006 Chevrolet Trailblazer EXT, GMC Envoy XL, 2006-2008 Isuzu Ascender, and Saab 9-7x vehicles. In the affected v…
NHTSA 15V519000
Exterior Lighting › Headlights
Date: 14/08/2015
General Motors LLC (GM) is recalling certain model year 2007 Pontiac Grand Prix, 2006-2009 Buick LaCrosse, 2006-2007 Buick Rainier, Chevrolet Trailblazer, GMC Envoy, 2006 Chevrolet Trailblazer EXT, GMC Envoy XL, 2006-2008 Isuzu Ascender, and Saab 9-7x vehicles. In the affected v…
NHTSA 00V375000
Structure › Body
Date: 13/11/2000
VEHICLE DESCRIPTION: CERTAIN SPORT UTILITY VEHICLES FAIL TO COMPLY WITH THE REQUIREMENTS OF FMVSS NO. 201, "OCCUPANT PROTECTION IN INTERIOR IMPACTS." THESE VEHICLES HAVE A CONSOLE COVER/ARMREST CAM LATCH THAT COULD RELEASE AT LESS THAN THE REQUIRED LOAD OF THE STANDARD.
NHTSA 00V375000
Structure › Body
Date: 13/11/2000
VEHICLE DESCRIPTION: CERTAIN SPORT UTILITY VEHICLES FAIL TO COMPLY WITH THE REQUIREMENTS OF FMVSS NO. 201, "OCCUPANT PROTECTION IN INTERIOR IMPACTS." THESE VEHICLES HAVE A CONSOLE COVER/ARMREST CAM LATCH THAT COULD RELEASE AT LESS THAN THE REQUIRED LOAD OF THE STANDARD.
NHTSA 00V375000
Structure › Body
Date: 13/11/2000
VEHICLE DESCRIPTION: CERTAIN SPORT UTILITY VEHICLES FAIL TO COMPLY WITH THE REQUIREMENTS OF FMVSS NO. 201, "OCCUPANT PROTECTION IN INTERIOR IMPACTS." THESE VEHICLES HAVE A CONSOLE COVER/ARMREST CAM LATCH THAT COULD RELEASE AT LESS THAN THE REQUIRED LOAD OF THE STANDARD.
NHTSA 13V248000
Electrical System
Date: 13/06/2013
General Motors (GM) is recalling certain model year 2005-2007 SAAB 9-7x; 2006 Chevrolet Trailblazer EXT and GMC Envoy XL; and 2006-2007 Chevrolet Trailblazer, GMC Envoy, Buick Rainier and Isuzu Ascender vehicles. Fluid may enter the driver's door module, causing corrosion that c…
NHTSA 13V248000
Electrical System
Date: 13/06/2013
General Motors (GM) is recalling certain model year 2005-2007 SAAB 9-7x; 2006 Chevrolet Trailblazer EXT and GMC Envoy XL; and 2006-2007 Chevrolet Trailblazer, GMC Envoy, Buick Rainier and Isuzu Ascender vehicles. Fluid may enter the driver's door module, causing corrosion that c…
NHTSA 01V126000
Suspension › Front › Control Arm › Lower Arm
Date: 12/04/2001
VEHICLE DESCRIPTION: SPORT UTILITY VEHICLES. UNDER CERTAIN CIRCUMSTANCES THE FRONT LOWER CONTROL ARM BRACKETS MAY FRACTURE. THIS FRACTURE COULD RESULT IN SEPARATION OF THE FRONT LOWER CONTROL ARM FROM THE FRAME.
NHTSA 02V222000
Air Bags › Frontal
Date: 09/08/2002
CERTAIN PASSENGER, MINI VANS, AND SPORT UTILITY VEHICLES HAVE AN AIR BAG INFLATOR ON THE DRIVER'S SIDE THAT COULD FRACTURE AT A WELD DURING A DEPLOYMENT.
NHTSA 05V552000
Equipment › Other › Labels
Date: 07/12/2005
CERTAIN TRUCKS AND SPORT UTILITY VEHICLES FAIL TO CONFORM TO THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 110, "TIRE SELECTION AND RIMS." THESE VEHICLES WERE SHIPPED WITH TIRE AND LOADING INFORMATION LABELS LISTING AN INACCCURATE VEHICLE CAPACITY WEIGHT.
NHTSA 03V075000
Power Train › Automatic Transmission
Date: 06/03/2003
CERTAIN SPORT UTILITY VEHICLES FAIL TO COMPLY WITH THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 114, "THEFT PROTECTION." THESE VEHICLES ARE EQUIPPED WITH A MECHANICAL OVERRIDE THAT COULD ALLOW THE IGNITION KEY TO BE REMOVED WITH THE SHIFT LEVER IN A POSITION OTH…
NHTSA 05V455000
Steering › Hydraulic Power Assist › Hose, Piping, And Connections
Date: 05/10/2005
CERTAIN PASSENGER VEHICLES MAY HAVE BEEN BUILT WITH A POWER STEERING HOSE THAT IS NOT TO SPECIFICATION. UNDER EXTREME STEERING MANEUVERS, SUCH AS TURNING THE STEERING WHEEL FULLY TO THE LEFT OR RIGHT WHILE BRAKING, THE HOSE MAY FRACTURE AND LEAK FLUID.
NHTSA 01V283000
Power Train › Transfer Case (4-Wheel Drive)
Date: 05/09/2001
VEHICLE DESCRIPTION: SPORT UTILITY VEHICLES (4 WHEEL-DRIVE). SOME OF THESE VEHICLES WERE BUILT WITH A RANGE SHIFT COLLAR IN THE TRANSMISSION TRANSFER CASE THAT CONTAINS CRACKS.
NHTSA 05V198000
Exterior Lighting › Turn Signal
Date: 05/05/2005
ON CERTAIN TRUCKS AND SPORT UTILITY VEHICLES, THE DRIVER WISHING TO SIGNAL A TURN BY MOVING THE DIRECTIONAL SIGNAL LEVER, (UP OR DOWN) MAY CAUSE THE FRONT MARKER/TURN LIGHTS AND REAR TURN LIGHTS TO FLASH IN A MANNER SIMILAR TO HAZARD WARNING, RATHER THAN FLASHING ON THE DESIRED S…
NHTSA 02V273000
Structure › Body
Date: 04/10/2002
CERTAIN SPORT UTILITY VEHICLES ARE MISSING WELDS ON THE REAR FLOOR PLAN.
NHTSA 04V046000
Visibility › Windshield Wiper/Washer
Date: 04/02/2004
CERTAIN SPORT UTILITY VEHICLES HAVE WINDSHIELD WIPER SYSTEMS THAT WILL NOT TURN ON, CEASE OPERATION WHILE IN USE, FAIL TO TURN OFF/ON BY THEMSELVES (MOISTURE SENSITIVE WIPER SYSTEM), OR HAVE CONTINUOUS WINDSHIELD WASHER PUMP OPERATION BECAUSE THE PRESENCE OF WATER WITHIN THE WIPE…
NHTSA 05V035000
Visibility › Windshield
Date: 03/02/2005
CERTAIN SPORT UTILITY VEHICLES FAIL TO COMPLY WITH THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 212, 'WINDSHIELD MOUNTING.' THE WINDSHIELD URETHANE BEAD MAY NOT HAVE ADHERED TO THE BODY IN CERTAIN AREAS DURING THE CURE PROCESS.
NHTSA 14V404000
Visibility › Power Window Devices And Controls
Date: 02/07/2014
General Motors LLC (GM) is recalling certain model year 2005-2007 SAAB 9-7x; 2006 Chevrolet Trailblazer EXT and GMC Envoy XL; and 2006-2007 Chevrolet Trailblazer, GMC Envoy, Buick Rainier and Isuzu Ascender vehicles. Fluid may enter the driver's door master power window switch m…
NHTSA 14V404000
Visibility › Power Window Devices And Controls
Date: 02/07/2014
General Motors LLC (GM) is recalling certain model year 2005-2007 SAAB 9-7x; 2006 Chevrolet Trailblazer EXT and GMC Envoy XL; and 2006-2007 Chevrolet Trailblazer, GMC Envoy, Buick Rainier and Isuzu Ascender vehicles. Fluid may enter the driver's door master power window switch m…
🔴 DASHBOARD WARNING LIGHTS — UNIVERSAL GUIDE

53 warning lights classified by urgency. Appears on your vehicle? Check the urgency level.

Show all dashboard warning lights
🔴 IMMEDIATE STOP — pull over
Oil Pressure WarningEngine
Engine Temperature WarningCooling
!BRAKE
Brake System WarningBrakes
K
Immobilizer / Key FaultSecurity
🟠 WARNING — check soon
Malfunction Indicator Light (MIL) / Check EngineEngine
Diesel Particulate Filter (DPF)Emissions
+−
Battery / Charging SystemElectrical
Low Fuel WarningFuel
!BRAKE
ABS WarningBrakes
!BRAKE
Brake Pad Wear IndicatorBrakes
!BRAKE
Electronic Parking Brake (EPB)Brakes
!
Power Steering WarningSteering
ESC / Stability Control FaultChassis
Tire Pressure Warning (TPMS)Chassis
Transmission Temperature WarningTransmission
Transmission / Gearbox FaultTransmission
Airbag / SRS WarningActive safety
EGR / Exhaust Gas Recirculation FaultEmissions
Catalytic Converter / Emissions FaultEmissions
AdBlue / DEF Level LowEmissions
Coolant Level LowCooling
Hybrid / EV System WarningHybrid
EV Charge System FaultHybrid
12V Battery (Hybrid/EV Auxiliary)Hybrid
S
Suspension Fault / Air SuspensionSuspension
N
CAN Bus / Network Communication FaultNetwork
Water in Fuel FilterFuel
Diesel Injector FaultFuel
!
Steering Angle Sensor FaultSteering
Turbo / Boost Pressure FaultEngine
Regenerative Braking Fault (Hybrid/EV)Hybrid
🟡 MONITOR
Fuel Cap / Evap SystemEmissions
?
4WD / AWD SystemDrivetrain
L
Bulb Failure WarningLighting
L
Headlight Range / Leveling FaultLighting
Service / Maintenance DueMaintenance
AC
A/C System FaultHvac
Clutch Wear WarningTransmission
A
Cruise Control / ACC FaultADAS
🔵 INFORMATION
Engine Temperature Low (Blue)Cooling
Glow Plug / Diesel PreheatEngine
Traction Control / ESC OffChassis
Seatbelt ReminderActive safety
L
Rear Fog Light IndicatorLighting
A
Lane Departure / LDWS WarningADAS
A
Forward Collision Warning (FCW/AEB)ADAS
A
Blind Spot Monitor FaultADAS
A
Rear Parking Sensor / Camera FaultADAS
Windshield Washer Fluid LowMaintenance
!
Door Open WarningBody
!
Hood / Trunk Open WarningBody
Gear Shift Indicator (Manual)Transmission
Sport / Performance Mode ActiveTransmission
📢 REPORTED COMPLAINTS & PROBLEMS (NHTSA)

487 owner complaints filed with the U.S. National Highway Traffic Safety Administration (NHTSA) for the Gmc Envoy across model years 1998–2009. These are real, verified reports submitted by vehicle owners.

29 crash reports 27 fires 33 injuries
Complaints by model year (most reported first)
Model year 200860
Model year 200760
Model year 200660
Model year 200560
Model year 200460
Model year 200360
Model year 200260
Model year 200022
Most reported components (all years)
Exterior Lighting121
Electrical System117
Fuel/Propulsion System72
Engine47
Air Bags39
Unknown Or Other36
Sample reports
RADIATOR AND TRANSMISSION WENT WHILE DRIVING ON A HIGHWAY. MY MECHANIC TOLD ME THE PART THAT FAILED NEVER FAILS AND HE WAS SHOCKED THAT IT DID. (MY 2006)
HEAD LIGHTS WILL ALL AT ONCE GO OFF WHILE DRIVING AT NIGHT. I'VE REPLACED THE HDM RELAY AND IT WORKED FINE FOR A FEW MONTHS AND THEN IT DONE IT AGAIN. (MY 2002)
WHILE DRIVING THE ENVOY AT ABOUT 45 MPH, A WARNING LIGHT SAYING "REDUCED ENGINE POWER" CAME ON SUDDENLY, THE CAR DROPPED DOWN TO ABOUT 20 MPH, AND THAT CONTINUES TO OCCUR. I CAN TURN OFF AND RESTART THE CAR, BUT THE PROBLEM RETURNS WITH… (MY 2002)
I PURCHASED A NEW 1998 GMC ENVOY (VEHICLE IS BASED UPON THE GMC S-10 "JIMMY" MODEL) IN JANUARY 1999. THE VEHICLE AS OF 12/2003 HAS ONLY 15,400 MILES. FROM TIME TO TIME THE RIGHT HIGH INTENSITY DISCHARGE ("HID") LAMP DOES NOT FUNCTION A… (MY 1998)

Source: NHTSA complaints database (U.S. data.gov). Figures cover production years 1998–2009.

Frequently Asked Questions

Does the Gmc Envoy have any safety recalls?

Yes — 37 official NHTSA recall campaign(s) affect this model, mainly: VISIBILITY:POWER WINDOW DEVICES AND CONTROLS, EXTERIOR LIGHTING:HEADLIGHTS, ELECTRICAL SYSTEM. Check the recalls section for your exact year/VIN.

What does fault code P0300 mean on the Gmc Envoy?

Random/Multiple Cylinder Misfire Detected This code is among the most documented for this model — tap it in the OBD2 section for the full step-by-step guide.

What does fault code P0128 mean on the Gmc Envoy?

Coolant temperature below thermostat regulating temperature — thermostat stuck open or faulty This code is among the most documented for this model — tap it in the OBD2 section for the full step-by-step guide.

What does fault code P0011 mean on the Gmc Envoy?

A Camshaft Position Timing Over-Advanced or System Performance (Bank 1) This code is among the most documented for this model — tap it in the OBD2 section for the full step-by-step guide.

Are fuel system problems common on the Gmc Envoy?

Yes — 66 of 465 real owner reports filed with NHTSA mention the fuel system. One owner reported: “I WAS DRIVING ON A 4 LANE DIVIDED HIGHWAY WITH MULTIPLE STOPLIGHTS. AS A LIGHT TURNED RED, I APPLIED THE BRAKES. THE BRAKE PEDAL WENT TO THE FLOOR ACCOMPANIED BY THE BRAKE WARNING LIGHT AND I ALMOST…” See the owner-reported complaints section below for more.

Are engine problems common on the Gmc Envoy?

Yes — 72 of 465 real owner reports filed with NHTSA mention the engine. One owner reported: “I WAS DRIVING ALONG AT HIGHWAY SPEEDS WHEN MY 1998 GMC ENVOY WITH 43162 MILES STOPPED ACCELERATING. WHEN I STEPPED HARDER ON THE GAS, THE ENGINE WOULD NOT REV AND POWER BEGAN TO RUN OUT FROM THE ENGI…” See the owner-reported complaints section below for more.

Are electrical problems common on the Gmc Envoy?

Yes — 201 of 465 real owner reports filed with NHTSA mention the electrical. One owner reported: “I WAS DRIVING ON A 4 LANE DIVIDED HIGHWAY WITH MULTIPLE STOPLIGHTS. AS A LIGHT TURNED RED, I APPLIED THE BRAKES. THE BRAKE PEDAL WENT TO THE FLOOR ACCOMPANIED BY THE BRAKE WARNING LIGHT AND I ALMOST…” See the owner-reported complaints section below for more.

Which OBD2 fault codes are commonly documented for the Gmc Envoy (1998–2009)?

Commonly documented OBD2 codes across many vehicles include: P0420, P0300, P0171. Find the full description, likely causes and estimated repair costs in the OBD2 Codes section on this page.

How often should the Gmc Envoy (1998–2009) be serviced?

Routine maintenance for the Gmc Envoy (1998–2009) typically includes an oil change every 6,000–9,000 miles (10,000–15,000 km), an air filter every 12,000–18,000 miles (20,000–30,000 km) and a brake inspection every 12,000 miles (20,000 km). Check the full plan with specific intervals in the Scheduled Maintenance section on this page.

This spec sheet is updated with data verified from OEM sources and shop databases. If you spot an inaccuracy or have additional data on the Gmc Envoy (1998–2009), let us know — every correction improves quality for all users.

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