IllustrationWHEN APPLYING BRAKES GOING DOWN HILL, PUT THE BRAKE PEDAL TO FLOOR AND DIN'T HAVE ANY BRAKES. BRAKE LINE ROTTED. *TR
2005 GMC Sierra Denali
Owner reports · Recalls · Investigations
Limited comparison data
There is not enough comparable history to draw a useful model-year comparison.
About this comparison →How this year compares
Owner complaints by model year
Compare all Sierra Denali years →Counts vary with age, sales and reporting. They are not failure rates.
What owners reported most
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: 4 of 4 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 1 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Steering. Review the 1 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
0 crash reports0 fire reports0 injury reports
What owners actually said
4 reportsFIRST THE FUEL GAUGE WAS ERRATIC THEN FAILED, THEN THE SPEEDOMETER PEGGED AND IS FAILING TO SHOW EVEN CLOSE TO TRUE SPEED AS IN SHOWING 100+MPH IN AN ACTUAL +/-35MPH RANGE. CIRCUMSTANCES MATCH DESCRIPTION OF COMMON PROBLEMS WITH INSTRUMENT CLUSTER FAILURES ON THAT MAKE AND MODEL. *TR
WHEN OPERATING AT LOW SPEEDS,I WOULD TURN THE WHEEL TO LEFT AND STEERING FELT SLUGGISH,FELT LIKE A RUBBING AND FEELS LIKE VEHICLE WOULD STALL. BROUGHT TO LOCAL GARAGE, THEY WERE ABLE TO DUPLICATE PROBLEM BUT HAD SOLUTIONS. THEY CHECKED POWER STEERING PUMP, BRAKE SENSORS, SERPENTINE BELT, FLUIDS...ALL CHECKED OUT FINE. *TR
TL* THE CONTACT OWNS A 2005 GMC SIERRA DENALI. THE CONTACT STATED THAT WHILE DRIVING 50 MPH AND DEPRESSING THE BRAKES, THE PEDAL BECAME SPONGY. THE CONTACT INSPECTED THE BRAKES AND NOTICED THAT THE HYDRAULIC BRAKE LINE WAS SEVERELY RUSTED AND CORRODED. THE BRAKE LINE WAS ALSO FRACTURED AND CAUSED BRAKE FLUID TO LEAK. THE VEHICL…
Read full complaint
TL* THE CONTACT OWNS A 2005 GMC SIERRA DENALI. THE CONTACT STATED THAT WHILE DRIVING 50 MPH AND DEPRESSING THE BRAKES, THE PEDAL BECAME SPONGY. THE CONTACT INSPECTED THE BRAKES AND NOTICED THAT THE HYDRAULIC BRAKE LINE WAS SEVERELY RUSTED AND CORRODED. THE BRAKE LINE WAS ALSO FRACTURED AND CAUSED BRAKE FLUID TO LEAK. THE VEHICLE WAS NOT TAKEN TO THE DEALER. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE, WHO RECOMMENDED THAT THE CONTACT TAKE THE VEHICLE TO THE DEALER FOR INSPECTION OF THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE WAS 49,800.
Official recalls
105V127000 · Seat Belts:front:anchorage
Mar 31, 2005
CERTAIN SPORT UTILITY VEHICLES FAIL TO COMPLY WITH THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 225, "CHILD RESTRAINT ANCHORAGE SYSTEMS" THE REQUIREMENTS FOR LOCATION AND INSTRUCTIONS FOR PROPERLY ATTACHING CHILD RESTRAINTS. THE OWNER MANUAL IN THESE VEHICLES INDICATE THE INCORRECT SEAT LOCATIONS WITH UPPER AND LOWER TETHER ANCHORS, AND PROVIDE INCORRECT INSTALLATION INSTRUCTIONS FOR THE TOP TETHER ANCHORAGE.
Consequence & remedy
Consequence: IMPROPER USE OF CHILD RESTRAINT ANCHORAGE COULD RESULT IN PERSONAL INJURY TO THE SEAT OCCUPANT.
Remedy: DEALERS WILL MAIL AN OWNER'S MANUAL UPDATE THAT DESCRIBES THE LOCATION AND PROPER USE OF THE TETHER ANCHORS. THE RECALL BEGAN ON APRIL 15, 2005. OWNERS MAY CONTACT GMC AT 1-866-996-9463.
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
0No exact-year investigations in this snapshot.