Tap a category to read its complaints. One report may name several components.
When problems were reported
Mileage at the reported incident
Limited mileage data: 10 of 11 reports include usable mileage. There isn’t enough coverage to show a useful chart.
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 3 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
Electrical System. Review the 2 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
Service Brakes, Hydraulic. Review the 2 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
1 crash reports0 fire reports1 injury reports
What owners actually said
11 reports
108,000 miles · Jul 17, 2014
Power TrainService Brakes
I WAS DRIVING DOWN ROUTE 24 IN LEWES, DELAWARE APPROACHING A YELLOW LIGHT WHEN THE CAR IN FRONT OF ME STOPPED. I APPLIED THE BRAKES AND THEY COMPLETELY FAILED DESPITE PUTTING THE PEDDLE ALL THE WAY TO THE FLOOR. I WAS FORCED TO VEER ONTO THE SHOULDER THEN INTO A FARMERS FIELD IN ORDER TO SLOW THE TRUCK DOWN ENOUGH TO FORCE IT IN…
Read full complaint
I WAS DRIVING DOWN ROUTE 24 IN LEWES, DELAWARE APPROACHING A YELLOW LIGHT WHEN THE CAR IN FRONT OF ME STOPPED. I APPLIED THE BRAKES AND THEY COMPLETELY FAILED DESPITE PUTTING THE PEDDLE ALL THE WAY TO THE FLOOR. I WAS FORCED TO VEER ONTO THE SHOULDER THEN INTO A FARMERS FIELD IN ORDER TO SLOW THE TRUCK DOWN ENOUGH TO FORCE IT INTO PARK. APPARENTLY THE HYDRAULIC BRAKE LINES ON THESE TRUCKS ARE COMPLETELY EXPOSED TO THE ELEMENTS AND HAVE A HISTORY OF FAILING. ONCE THAT HAPPENS, THE REAR CALIPERS LOCK UP AND THERE ARE NO BRAKES AT ALL SWITCH CAN CAUSE A CRASH. THERE IS NO WARNING GIVEN UNTIL THE HYDRAULIC LINE SNAPS AND THE FLUID IS RELEASED. MY TRUCK HAS NEVER BEEN IN AN ACCIDENT AND HAS LOW MILEAGE FOR ITS AGE. IT HAS ALWAYS BEEN WELL MAINTAINED AND IS NOT A WORK TRUCK BUT MERELY A PERSONAL VEHICLE. IN ADDITION, I AM ON MY THIRD TRANSMISSION DO TO THE POOR SELECTION GM MADE OF PUTTING THE S-10 PICK UP TRANSMISSION IN A SUBSTANTIALLY HEAVIER TRUCK. *TR
NHTSA ODI #10611180
86,000 miles · Aug 7, 2013
Service Brakes
TL* THE CONTACT OWNS A 2004 GMC SIERRA DENALI. THE CONTACT STATED WHILE TRAVELING APPROXIMATELY 5 MPH, THE BRAKE PEDAL WAS ABLE TO BE FULLY DEPRESSED AND THE BRAKE WARNING LIGHT ILLUMINATED. THE VEHICLE WAS TOWED TO THE DEALER WHERE IT WAS FOUND THAT THE BRAKE LINES WERE CORRODED. THE CONTACT ALSO MENTIONED THAT THE FAILURE WAS …
Read full complaint
TL* THE CONTACT OWNS A 2004 GMC SIERRA DENALI. THE CONTACT STATED WHILE TRAVELING APPROXIMATELY 5 MPH, THE BRAKE PEDAL WAS ABLE TO BE FULLY DEPRESSED AND THE BRAKE WARNING LIGHT ILLUMINATED. THE VEHICLE WAS TOWED TO THE DEALER WHERE IT WAS FOUND THAT THE BRAKE LINES WERE CORRODED. THE CONTACT ALSO MENTIONED THAT THE FAILURE WAS EXPERIENCED TWICE. THE VEHICLE WAS BEING REPAIRED. THE MANUFACTURER WAS CONTACTED ABOUT THE FAILURE. THE FAILURE MILEAGE WAS APPROXIMATELY 86,000.
NHTSA ODI #10534022
65,000 miles · Jun 7, 2012
Service Brakes
FRONT BRAKE LINE FAILURE DUE TO CORROSION, IN JUNE 2012 HAVE TO REPLACE ENTIRE BRAKE LINE SYSTEM. *JS
NHTSA ODI #10460940
135,522 miles · Jul 14, 2011
Engine And Engine Cooling
2004 GMC SIERRA 6 LITER V8 - EXHAUST MANIFOLD BOLTS BROKEN OFF - $600 TO REPAIR. DESIGN AND/OR PART DEFECT. DEALER SAID THIS HAPPENS. RECALL OR HAVE GM CORRECT? *TR
NHTSA ODI #10412314
Mileage unknown · Feb 4, 2010
Tires
OVER THE PAST WEEK, I NOTICED THAT MY GMC DENALI TRUCK WAS PULLING TO THE LEFT SO I HAD TO OVERSTEER TO THE RIGHT. EACH DAY, THE EFFECT BECAME MORE PRONOUNCED SO I HAD THE LOCAL GMC DEALER CHECK OUT THE TRUCK. THE PROBLEM WAS THAT THE CORDS IN THE FRONT GOODYEAR WRANGLER HP TIRE HAD SEPARATED--IT WAS A BLOWOUT WAITING TO HAPPE…
Read full complaint
OVER THE PAST WEEK, I NOTICED THAT MY GMC DENALI TRUCK WAS PULLING TO THE LEFT SO I HAD TO OVERSTEER TO THE RIGHT. EACH DAY, THE EFFECT BECAME MORE PRONOUNCED SO I HAD THE LOCAL GMC DEALER CHECK OUT THE TRUCK. THE PROBLEM WAS THAT THE CORDS IN THE FRONT GOODYEAR WRANGLER HP TIRE HAD SEPARATED--IT WAS A BLOWOUT WAITING TO HAPPEN. I DID NOT HIT ANYTHING WITH MY TRUCK TO HAVE CAUSED THE SEPARATION, THE TREAD WEAR WAS EVEN ON ALL TIRES, THEY WERE REGULARLY CHECKED FOR INFLATION, AND MOST OF THE TREAD WAS LEFT SINCE I HAVE PUT LOW MILEAGE ON THIS TIRES. A NUMBER OF DEATHS HAVE BEEN REPORTED DUE TO FAILURE OF THIS TYPE OF TIRE. I HAD BOTH FRONT TIRES REPLACED AND OVER THE NEXT FEW MONTHS, I WILL REPLACE THE REMAINING TWO TIRES. I CANNOT CHANCE A DEATH OR INJURY. PLEASE RECALL THESE TIRES. HOW MANY PEOPLE NEED TO DIE. *JB
SPEEDOMETER MALFUNCTIONS. GOES TO 120 THEN 0. STAYS AT 0. STOPS WORKING. SKIPS AROUND.
NHTSA ODI #10185558
48,000 miles · Mar 6, 2007
Service Brakes, Hydraulic
I AM EXPERIENCING THE EXACT PROBLEM THAT IS DESCRIBED REGARDING THE RECALL OF GMC LIGHT TRUCKS FOR ABS ACTIVATION AT SLOW SPEEDS DUE TO CORROSION OF THE HUB AND WHEEL ASSEMBLY. I HAVE A 2004 GMC SIERRA DENALI WHICH, ACCORDING TO GMC, IS NOT INCLUDED IN THE MASSIVE RECALL PROMPTED BY YOUR INVESTIGATION. MY ISSUE, AS DESCRIBED B…
Read full complaint
I AM EXPERIENCING THE EXACT PROBLEM THAT IS DESCRIBED REGARDING THE RECALL OF GMC LIGHT TRUCKS FOR ABS ACTIVATION AT SLOW SPEEDS DUE TO CORROSION OF THE HUB AND WHEEL ASSEMBLY. I HAVE A 2004 GMC SIERRA DENALI WHICH, ACCORDING TO GMC, IS NOT INCLUDED IN THE MASSIVE RECALL PROMPTED BY YOUR INVESTIGATION. MY ISSUE, AS DESCRIBED BY THE DEALER, IS EXACTLY THE SAME AS THE ISSUE AND REASON FOR RECALLING THOSE OTHER VEHICLES. *JB
NHTSA ODI #10184356
23,520 miles · Feb 16, 2005
Steering
QUADRA STEERING LOCKS UP, CAUSING THE REAR OF THE TRUCK TO VEER TO THE LEFT AND THE ENTIRE TRUCK TO TRAVEL IN A CRABBING OR ANGLED POSITION. ON TWO LANE ROAD THE REAR IS IN THE ONCOMING LANE AND THE VEHICLE IS NEARLY IMPOSSIBLE TO CONTROL. MESSAGE ON DASH IS "SERVICE 4 WHEEL STEER" DEALER CAN NOT FIND A PROBLEM. VEHICLE STILL AT…
Read full complaint
QUADRA STEERING LOCKS UP, CAUSING THE REAR OF THE TRUCK TO VEER TO THE LEFT AND THE ENTIRE TRUCK TO TRAVEL IN A CRABBING OR ANGLED POSITION. ON TWO LANE ROAD THE REAR IS IN THE ONCOMING LANE AND THE VEHICLE IS NEARLY IMPOSSIBLE TO CONTROL. MESSAGE ON DASH IS "SERVICE 4 WHEEL STEER" DEALER CAN NOT FIND A PROBLEM. VEHICLE STILL AT DEALERSHIP.*AK
NHTSA ODI #10110615
Official recalls
0
No recalls in this snapshot.
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 Denali Problems, Complaints & Recalls | Skip That Year