Tap a category to read its complaints. One report may name several components.
When problems were reported
Mileage at the reported incident
420–25K
3425–50K
1850–75K
3375–100K
18100–150K
6150K+
151 reports with mileage · 37 unknown
NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.
What to inspect
Issues worth paying extra attention to based on owner reports.
Service Brakes. Review the 44 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
Electrical System. Review the 39 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
Service Brakes, Hydraulic. Review the 28 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
11 crash reports5 fire reports9 injury reports
What owners actually said
188 reports
Mileage unknown · Apr 29, 2004
Service Brakes, Hydraulic
2004 GMC SIERRA Z71 OFF ROAD VEHICLE BRAKES. (NAR) *MR WHEN APPLYING THE BRAKES THE CONSUMER FEELS THAT THE STOPPING DISTANCE IS NOT COMMENSURATE WITH THE BRAKE PEDAL PRESSURE. ONCE THE VEHICLE IS STOPPED THE BRAKE PEDAL MOVES TOWARDS THE FLOORBOARD TO WITHIN ONE HALF INCH. THE CONSUMER REQUEST A DETAILED RESPONSE EXPLAINING …
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2004 GMC SIERRA Z71 OFF ROAD VEHICLE BRAKES. (NAR) *MR WHEN APPLYING THE BRAKES THE CONSUMER FEELS THAT THE STOPPING DISTANCE IS NOT COMMENSURATE WITH THE BRAKE PEDAL PRESSURE. ONCE THE VEHICLE IS STOPPED THE BRAKE PEDAL MOVES TOWARDS THE FLOORBOARD TO WITHIN ONE HALF INCH. THE CONSUMER REQUEST A DETAILED RESPONSE EXPLAINING THE REASONS FOR THE TRUCK'S BRAKE PEDAL OVER TRAVEL AND "MUSHY" BRAKE PEDAL. *NM *CB
NHTSA ODI #10073335
1,500 miles · Apr 19, 2004
Service Brakes, Hydraulic
2004 GMC SIERRA POOR BRAKE RESPONSE. *AK
NHTSA ODI #10066509
Mileage unknown · Apr 1, 2004
Structure
ON MY 2003 GMC TRUCK THE RIGHT REAR FENDER BROKE AT THE BOTTOM WHERE THE BOLT SCREW INTO THE SUPPORT, BUT ABOVE A 1 1/2" TO 2" ABOVE BOLT. THE DEALER AND GM REP. SAID SOMETHING HIT THE FENDER.ON THE BOLT HAVE A CHIP ABOUT 1/8" AND NO DAMAGE TO THE FENDER WHERE SOMETHING BROKE IT. *AK
NHTSA ODI #10064323
4,500 miles · Mar 26, 2004
Exterior Lighting
I OWN A 2004 GMC SIERRA PICKUP WITH 6,700 MILES. I AM EXPERIENCEING A IMTERMINTENT PROBLEM WITH THE TURN SIGNAL/HAZARD LIGHTS. WHEN I ACTIVATE THE LEFT TURN SIGNAL THE HAZARD LIGHTS BEGIN TO FLASH. I HAVE TAKEN THE TRUCK TO THE DEALERSHIP FOR REPAIRS, AFTER WAITING TWO MONTHS FOR THE PROBLEM TO OCCUR AT A TIME I WAS NEAR THE DEA…
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I OWN A 2004 GMC SIERRA PICKUP WITH 6,700 MILES. I AM EXPERIENCEING A IMTERMINTENT PROBLEM WITH THE TURN SIGNAL/HAZARD LIGHTS. WHEN I ACTIVATE THE LEFT TURN SIGNAL THE HAZARD LIGHTS BEGIN TO FLASH. I HAVE TAKEN THE TRUCK TO THE DEALERSHIP FOR REPAIRS, AFTER WAITING TWO MONTHS FOR THE PROBLEM TO OCCUR AT A TIME I WAS NEAR THE DEALER. THEY REPLACED THE MULTI FUNCTION SWITCH AND TWO DAYS LATER THE PROBLEM IS STILL THERE. I CONTINUE TO WORK WITH GMC DIRECTLY AND THE DEALERSHIP TO SEEK RESOLUTION BUT AM BEING TOLD THAT UNLESS THEY CAN SEE THE PROBLEM HAPPENING THEY CANNOT DO ANYTHING. I AM VERY CONCERNED THAT THIS IS A DEFINITE SAFETY ISSUE. IF I AM ATTEMPTING TO MAKE A LEFT TURN AND THE SIGNALS ARE NOT OPERATING AS THEY SHOULD I COULD END UP IN A COLLISION WITH ON COMING OR APPROACHING FROM THE REAR TRAFFIC. I BELIEVE THIS SHOULD BE ADDRESSED IMMEDIATELY AND REPAIRED. PLEASE HELP.*AK
NHTSA ODI #10063915
8,000 miles · Mar 22, 2004
Power Train
TRANSMISSION WILL SLIP EVERY SO OFTEN, ALSO IT WILL MAKE A LOUD NOISE WHEN SHIFTING FROM 2ND TO 3RD. THIS HAPPENS ALOT BUT NOT EVERY TIME. THE FOUR WHEEL DRIVE MAKES A GRINDING NOISE AS YOU START MOVING AND CONTINUES FOR A GOOD DISTANCE (4 HIGH)*AK
NHTSA ODI #10063659
1,600 miles · Feb 24, 2004
Exterior Lighting
THE DEALERSHIP WAS UNABLE TO INSTALL A RELAY SWITCH BECAUSE OF A WIRING CHANGE FROM THE 2000 MODELS. THE LOW AND HIGH BEAM CAME ON SEPARATELY. WHEN IT SNOWED AND THE HIGH BEAM WAS ON, SNOW BUILD UP ON THE LOW BEAM. WHEN THIS OCCURRED IT CREATED A LAYER OF SNOW, AND CONSUMER WAS UNABLE TO CHANGE BACK TO LOW BEAM. *AK THE ME…
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THE DEALERSHIP WAS UNABLE TO INSTALL A RELAY SWITCH BECAUSE OF A WIRING CHANGE FROM THE 2000 MODELS. THE LOW AND HIGH BEAM CAME ON SEPARATELY. WHEN IT SNOWED AND THE HIGH BEAM WAS ON, SNOW BUILD UP ON THE LOW BEAM. WHEN THIS OCCURRED IT CREATED A LAYER OF SNOW, AND CONSUMER WAS UNABLE TO CHANGE BACK TO LOW BEAM. *AK THE MECHANICS REPORTED THAT THERE WAS AND INCOMPATIBILITY'S OF THE PREVIOUSLY USED RELAY. GMC WOULD NOT CORRECT THE PROBLEM. *SC
NHTSA ODI #10055483
181 miles · Jan 15, 2004
Structure
THIS VEHICLE WAS BOUGHT BRAND NEW AND REPRESENTED AS SUCH. UPON DELIVERY OF THE VEHICLE, MY HUSBAND NOTICED THE BED WAS 2 CROOKED ON THE BODY. THE VEHICLE WAS RETURNED TO LEACHMAN MOTORS WHO IN TURN STATING IT WAS A FACTORY DEFECT. THE ATTEMPTED TO REPAIR THE VEHICLE BY BENDING THE FRAME. THIS WAS UNACCEPTABLE. GM BLAMES LEACHMA…
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THIS VEHICLE WAS BOUGHT BRAND NEW AND REPRESENTED AS SUCH. UPON DELIVERY OF THE VEHICLE, MY HUSBAND NOTICED THE BED WAS 2 CROOKED ON THE BODY. THE VEHICLE WAS RETURNED TO LEACHMAN MOTORS WHO IN TURN STATING IT WAS A FACTORY DEFECT. THE ATTEMPTED TO REPAIR THE VEHICLE BY BENDING THE FRAME. THIS WAS UNACCEPTABLE. GM BLAMES LEACHMAN - LEACHMAN BLAMES GM AND WE HAVE RETURNED THE VEHICLE TO LEACHMAN BUT CONTINUE TO MAKE TRUCK PAYMENTS OF $452. SO AS NOT TO RUIN OUR CREDIT. NOW WE HAVE NO TRUCK AND NO-ONE IS HELPING US!! THIS TRUCK WAS SOLD AS A BRAND NEW VEHICLE. FOR $34,000. WE SHOULD HAVE A PERFECT TRUCK - NOT ONE WITH A BENT FRAME AND CROOKED BED!
NHTSA ODI #10071240
Mileage unknown · Jan 14, 2004
Service Brakes, Hydraulic
WHILE DRIVING ABS BRAKE LIGHT APPEARED ON THE DASHBOARD INTERMITTENTLY. CONSUMER CONTACTED DEALER, BUT PROBLEM STILL OCCURS. *AK
ON CERTAIN TRUCKS EQUIPPED WITH AN 8.1L V8 (RPO L8-VIN G) ENGINE HAVE A CONDITION IN WHICH THE ENGINE FUEL RAIL PULSE DAMPER RETAINER CLIP MAY FRACTURE RESULTING IN INADEQUATE RETENTION OF THE DAMPER.
Consequence & remedy
Consequence: IF THE DAMPER COMES LOOSE, A FUEL LEAK MAY RESULT. FUEL LEAKAGE, IN THE PRESENCE OF AN IGNITION SOURCE, COULD RESULT IN A FIRE.
Remedy: DEALERS WILL REPLACE THE ENGINE FUEL RAIL PULSE DAMPER RETAINER CLIP FREE OF CHARGE. THE RECALL BEGAN ON AUGUST 31, 2006. OWNERS MAY CONTACT CHEVROLET AT 1-800-630-2438 AND GMC TRUCKS AT 1-866-996-9463.
ON CERTAIN PICKUP TRUCKS EQUIPPED WITH MANUAL TRANSMISSIONS AND BUILT WITH EITHER PBR PARKING BRAKE SYSTEMS OR TRW PARKING BRAKE SYSTEMS, THE PARKING BRAKE FRICTION LININGS MAY WEAR TO AN EXTENT WHERE THE PARKING BRAKE CAN BECOME INEFFECTIVE IN IMMOBILIZING A PARKED VEHICLE.
Consequence & remedy
Consequence: IF THE PARKING BRAKE DOES NOT HOLD, UNINTENDED VEHICLE MOVEMENT COULD OCCUR, WHICH COULD RESULT IN A CRASH.
Remedy: DEALERS WILL INSTALL A LOW-FORCE SPRING CLIP RETAINER FOR VEHICLES EQUIPPED WITH A PBR PARKING BRAKE SYSTEM. ON VEHICLES EQUIPPED WITH THE TRW PARKING BRAKE SYSTEM, DEALERS WILL INSTALL A REDESIGNED PARKING BRAKE CABLE ASSEMBLY. THE RECALL BEGAN ON JULY 29, 2005. OWNERS MAY CONTACT CHEVROLET AT 1-800-630-2438 OR GMC AT 1-866-996-9463.
ON CERTAIN CREW CAB PICKUP TRUCKS AND SPORT UTILITY VEHICLES, THE 2ND ROW CENTER OCCUPANT SEAT BELT ROUTING MAY MAKE IT DIFFICULT TO POSITION THE LAP PORTION OF THE SAFETY BELT LOW AROUND THE HIPS OF OCCUPANTS, ESPECIALLY SMALLER OCCUPANTS, SEATED IN THIS POSITION. APPROPRIATE USE OF A CHILD SEAT OR BOOSTER SEAT, AS RECOMMENDED FOR SMALL CHILDREN, DOES IMPROVE THE FIT CONDITION FOR THIS USER GROUP. IN ADDITION TO INSTRUCTIONS ON PROPER INFANT AND YOUNG CHILD RESTRAINT (WITH CHILD SEATS OR BOOSTERS), SPECIAL VERBIAGE FOR RESTRAINING OLDER CHILD IS INCLUDED IN THE OWNER'S MANUAL. ALSO, THE SUGGESTED SEAT BELT FIT/ROUTING FOR ADULTS, IRRESPECTIVE OF SEATING POSITION, IS DESCRIBED IN THE OWNER'S MANUAL TEXT.
Consequence & remedy
Consequence: A LAP PORTION OF THE SEAT BELT ROUTING THAT IS NOT LOW AND SNUG ON THE HIPS CAN ALLOW THE LAP BELT TO RIDE UP ON AN OCCUPANT'S ABDOMEN INSTEAD OF FITTING LOW AROUND THEIR HIPBONES, AND THEREFORE, CAN EXPOSE THEM TO MORE RISK OF ABDOMINAL AND INTERNAL ORGAN INJURY.
Remedy: DEALERS WILL CUT OPEN THE GUIDE LOOP, REMOVE A PORTION OF THE LOOP, AND THEN THE REMAINING TWO SIDES SHOULD BE FOLDED OVER AND SECURED WITH A RETAINER FREE OF CHARGE. THE RECALL BEGAN ON JULY 21, 2005. OWNERS MAY CONTACT CADILLAC AT 1-866-982-2339, CHEVROLET AT 1-800-630-2438, GMC AT 1-866-996-9463, OR HUMMER AT 1-800-732-5493.
CERTAIN TRUCKS, SPORT UTILITY VEHICLES, AND VANS EQUIPPED WITH BOSCH HYDRO-BOOST BRAKE ASSEMBLIES, THE HYDRAULIC BRAKE BOOSTER PRESSURE ACCUMULATOR MAY CRACK AND SEPARATE FROM THE HYDRO-BOOST ASSEMBLY DURING NORMAL OPERATING CONDITIONS.
Consequence & remedy
Consequence: IF A SEPARATION OCCURRED AND THE HOOD OF THE VEHICLE WERE OPEN, FRAGMENTS FROM THE ACCUMULATOR COULD CAUSE INJURY TO PEOPLE IN THE IMMEDIATE AREA. THE PRESENCE OF THIS CRACK OR FRACTURED SURFACE COULD ALLOW THE HYDRAULIC FLUID TO LEAK FROM THE ACCUMULATOR CIRCUIT OF THE BOOSTER ASSEMBLY. THE LOSS OF FLUID WOULD CAUSE INCREASED STEERING AND BRAKING EFFORT AND A CRASH MAY OCCUR WITHOUT PRIOR WARNING.
Remedy: DEALERS WILL TEST THE HYDRO-BOOST ASSEMBLY FOR FUNCTIONAL OPERATION OF THE TWO-FUNCTION VALVE. IF THE HYDRO-BOOST ASSEMBLY FAILS THE TEST, DEALERS WILL REPLACE THE ASSEMBLY FREE OF CHARGE. THE RECALL BEGAN ON MARCH 23, 2005. OWNERS MAY CONTACT CHEVROLET AT 1-800-630-2438, GMC TRUCKS AT 1-866-996-9463 AND HUMMER AT 1-800-732-5493.
CERTAIN EXTENDED AND REGULAR CAB PICKUP TRUCKS AND CARGO VANS CONVERTED TO COMPRESSED NATURAL GAS (CNG) FAIL TO CONFORM TO THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 225, 'CHILD RESTRAINT ANCHORAGE SYSTEMS.' THESE VEHICLES HAVE ONE SEATING POSITION, THE CENTER REAR SEAT, EQUIPPED WITH CHILD RESTRAINT LOWER ANCHORAGES.
Consequence & remedy
Consequence: THE STANDARD REQUIRES CHILD SEAT LOWER ANCHORAGES IN TWO SEATING POSITIONS FOR VEHICLES WITH THREE REAR SEATING POSITIONS. THE STANDARD CAB AND CARGO VAN VEHICLES, WHICH ONLY HAVE FRONT SEATING POSITIONS, HAVE AN AIR BAG OFF SWITCH TO DISABLE THE FRONT PASSENGER AIR BAG AND DO NOT HAVE CHILD RESTRAINT LOWER ANCHORAGES IN THE PASSENGER SEAT. THE STANDARD REQUIRES PASSENGER SEAT CHILD SEAT LOWER ANCHORAGES IN VEHICLES WITH AN AIR BAG OFF SWITCH. HOWEVER, THE STANDARD DOES NOT REQUIRE VEHICLES WITH ONLY FRONT SEATING POSITIONS TO HAVE LOWER ANCHORAGE PROVISIONS IF THE VEHICLE IS NOT EQUIPPED WITH AN AIR BAG OFF SWITCH.
Remedy: TO BRING THE STANDARD CAB AND CARGO VAN VEHICLES INTO COMPLIANCE, DEALERS WILL INJECT EPOXY INTO THE AIR BAG OFF SWITCH TO PREVENT AIR BAG ACTIVATION, RELOCATE THE SWITCH BEHIND THE INSTRUMENT PANEL AND THEN INSTALL A COVER OVER THE RESULTING OPENING. THE SUN VISOR LABEL AND OWNER'S MANUAL WILL ALSO BE CHANGED. THE CORRECTION FOR THE EXTENDED CAB VEHICLE WILL CONSIST OF CHANGING THE FRONT PASSENGER SEAT TO A SEAT THAT HAS CHILD RESTRAINT LOWER ANCHORAGES. THE RECALL BEGAN ON SEPTEMBER 9, 2004. OWNERS SHOULD CONTACT CHEVROLET AT 1-800-630-2438 OR GMC AT 1-866-996-9463.
ON CERTAIN PICKUP TRUCKS AND SPORT UTILITY VEHICLES, THE GALVANIZED STEEL TAILGATE SUPPORT CABLES THAT RETAIN THE TAILGATE IN THE FULL OPEN (HORIZONTAL) POSITION MAY CORRODE, WEAKEN, AND EVENTUALLY FRACTURE. IF BOTH CABLES FRACTURED, THE TAILGATE WOULD SUDDENLY DROP AND STRIKE THE TOP SURFACE OF THE REAR BUMPER.
Consequence & remedy
Consequence: ANYONE SITTING OR STANDING ON THE HORIZONTAL SURFACE OF THE TAILGATE WHEN BOTH CABLES FRACTURED COULD BE INJURED BY FALLING FROM THE TAILGATE. ON VEHICLES THAT HAVE HAD THE BUMPER REMOVED, THE TAILGATE MAY DROP EVEN LOWER. ADDITIONALLY, IF THERE IS CARGO ON THE TAILGATE THE CARGO MAY FALL OFF IF THE SUPPORT CABLES FRACTURE.
Remedy: DEALERS WILL REPLACE THE CABLES. INTERIM OWNER NOTIFICATION BEGAN ON APRIL 7, 20004. THE RECALL BEGAN ON SEPTEMBER 24, 2004, WHEN REPLACEMENT PARTS WERE AVAILABLE, AND WILL CONTINUE THROUGH OCTOBER 29, 2004. OWNERS SHOULD CONTACT CADILLAC AT 1-866-982-2339, CHEVROLET AT 1-800-630-2438 OR GMC AT 1-866-996-9463, OR VISIT WWW.MYGMLINK.COM, AND ENTER YOUR VEHICLE IDENTIFICATION NUMBER.
CERTAIN SPORT UTILITY VEHICLES, PICKUP TRUCKS, AND PASSENGER VANS FAIL TO COMPLY WITH THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 135, ?PASSENGER CAR BRAKE SYSTEMS.? SOME OF THESE VEHICLES WERE PRODUCED WITH AN OUT-OF-SPECIFICATION BRAKE HYDRO-BOOST HOUSING RELIEF VALVE BORE.
Consequence & remedy
Consequence: CONSEQUENTLY, THE VALVE O-RING SEAL MAY FRACTURE. STEERING EFFORTS MAY BE SLIGHTLY INCREASED WHILE BRAKING OR PARKING. UNDER CERTAIN DRIVING CONDITIONS, A FRACTURED SEAL MAY REQUIRE A SLIGHT INCREASE IN THE APPLIED BRAKE PEDAL EFFORT TO ACHIEVE THE SAME VEHICLE DECELERATION RATE AS PRIOR TO THE SEAT FRACTURE.
Remedy: DEALERS ARE TO REPLACE THE HYDRO-BOOST RELIEF VALVE. THE RECALL BEGAN ON JUNE 18, 2004. OWNERS SHOULD CONTACT CADILLAC AT 1-866-982-2339; CHEVROLET AT 1-800-630-2438; GMC AT 1-866-996-9463; OR HUMMER AT 1-866-486-6376.
Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗
NHTSA investigations
0
No exact-year investigations in this snapshot.
2004 GMC Sierra Problems, Complaints & Recalls | Skip That Year
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