2007 Gmc SIERRA CLASSIC problems and owner complaints
Explore the records behind recurring owner reports.
Key facts
18 owner complaints analyzed
0 distinct recall campaigns
40,000 mi median reported failure mileage
Scope: 2007 model year. Data snapshot: . 17 complaints include usable failure mileage.
Most common problems
Service Brakes is the most frequently named component, appearing in 7 of 18 complaints (38.9%). A complaint can name multiple components.
| Topic | Matching reports | Share of complaints |
|---|---|---|
| Braking behavior | 13 | 72.2% |
| Transmission and shifting | 2 | 11.1% |
| Electrical and battery issues | 2 | 11.1% |
| Steering behavior | 2 | 11.1% |
| Engine operation | 1 | 5.6% |
Topic matches use published keyword rules. They describe mentions, including negations or comparisons, and do not confirm a diagnosis. Read the matching rules.
Component breakdown
Number of unique complaints naming each component. Top eight shown.
| Category | Count |
|---|---|
| Service Brakes | 7 |
| Service Brakes, Hydraulic | 4 |
| Electrical System | 3 |
| Fuel System, Gasoline | 2 |
| Fuel/Propulsion System | 2 |
| Power Train | 2 |
| Service Brakes, Hydraulic:Foundation Components:Hoses, Lines/Piping, And Fittings | 2 |
| Engine And Engine Cooling | 1 |
Service Brakes: 7; Service Brakes, Hydraulic: 4; Electrical System: 3; Fuel System, Gasoline: 2; Fuel/Propulsion System: 2; Power Train: 2; Service Brakes, Hydraulic:Foundation Components:Hoses, Lines/Piping, And Fittings: 2; Engine And Engine Cooling: 1
Reported problems by failure mileage
Complaint counts in mileage bands. These are not failure rates per vehicle or mile.
| Category | Count |
|---|---|
| Under 25,000 | 2 |
| 25,000 to 49,999 | 8 |
| 50,000 to 74,999 | 4 |
| 75,000 to 99,999 | 1 |
| 100,000 to 149,999 | 1 |
| 150,000 and above | 1 |
Under 25,000: 2; 25,000 to 49,999: 8; 50,000 to 74,999: 4; 75,000 to 99,999: 1; 100,000 to 149,999: 1; 150,000 and above: 1
25,000 to 49,999 miles has the most reports with usable mileage (8). 1 complaints have missing, zero or invalid mileage.
Complaints over time
Year the complaint was filed, not the vehicle model year or incident year. The snapshot year is partial.
| Category | Count |
|---|---|
| 2008 | 1 |
| 2009 | 2 |
| 2010 | 4 |
| 2012 | 2 |
| 2013 | 1 |
| 2014 | 4 |
| 2015 | 3 |
| 2016 | 1 |
2008: 1; 2009: 2; 2010: 4; 2012: 2; 2013: 1; 2014: 4; 2015: 3; 2016: 1
Pattern summary
Service Brakes leads the component reports. Braking behavior appears in 13 complaint narratives. Transmission and shifting appears in 2 complaint narratives. Electrical and battery issues appears in 2 complaint narratives. Use these patterns to inspect individual reports and prepare questions for a mechanic.
Calculated from recorded counts. An AI narrative has not been published for this selection.
Complaint evidence
Examples provide context, not a representative sample or a verified diagnosis.
Owner report 10250461 · 2008-12-02 (December 2, 2008)
THE TRUCK AFTER 40 MILES STARTED SCREECHING FROM THE FRONT WHEN GOING AROUND CORNERS,AND WAS REPORTED TO THE DEALER SAM SWOPE, I WAS INFORMED THAT IT WAS NORMAL, ON THE WAY TO TOWN THE TRUCK STALLED AND WAS TOWED FOR REPAIR TURNS OUT THE COIL PLUG SHORTED OUT WIRES WERE REPLACED, NEXT DAY THE TRUCK STALLED AGAIN TOWED AGAIN TURNS OUT THAT BOOTH CATALYTIC CONVERTERS WERE PLUGGED,BOOTH REPLACED. ENTERING THE FREEWAY WHEN ACCELERATED THE TRUCK DID NOT RESPOND, I WAS INFORMED BY THE DEALER THAT NOTHING WRONG WITH THE TRANNY, NOW I HAVE A CLUNKING…
Owner-reported narrative. 44 miles reported. Look up ODI 10250461 at NHTSA ↗
Owner report 10289087 · 2009-10-20 (October 20, 2009)
MY 2007 GMC SIERRA CLASSIC HAS THE SAME PROBLEM AS EARLIER MODEL YEARS THAT WERE RECALLED. THE ABS IS ENGAGING DURING LOW SPEED STOPS, WHICH CAUSES LONGER STOPPING DISTANCE AND COULD CAUSE AN ACCIDENT. *TR
Owner-reported narrative. 59,400 miles reported. Look up ODI 10289087 at NHTSA ↗
Owner report 10553067 · 2013-11-20 (November 20, 2013)
WHILE DRIVING THE TRUCK ON A RESIDENTIAL STREET, THE BRAKES COMPLETELY FAILED WHEN I DEPRESSED THE BRAKE PEDAL (IT WENT TO THE FLOOR) AND ATTEMPTED TO STOP. I LOST ALL NORMAL BRAKING ABILITY AND HAD TO STOP BY DOWN SHIFTING AND APPLYING THE EMERGENCY BRAKES. WHEN I GOT THE TRUCK STOPPED AND GOT OUT, I FOUND THAT THE BRAKE FLUID WAS POURING OUT ONTO THE GROUND. A QUALIFIED MECHANIC INSPECTED THE TRUCK AND FOUND THAT THE BRAKE LINES WERE RUSTED THROUGH AND HAD RUPTURED. HE WENT ON TO TELL ME THAT THIS PROBLEM IS A FREQUENTLY OCCURRING KNOW PROB…
Owner-reported narrative. 25,000 miles reported. Look up ODI 10553067 at NHTSA ↗
Owner report 10701504 · 2015-03-24 (March 24, 2015)
WHY IS GM RECALL 14121 LIMITED TO NEW VEHICLES? IT HAS BEEN A RECURRENT, COMMON PROBLEM SINCE LONG BEFORE 2000. LONG BEFORE I BOUGHT MY 2007 GMC SIERRA CLASSIC 2500HD WHICH IS ON THE THIRD REPAIR. I JUST REPLACED A TRANSMISSION COOLER LINE IN MY DRIVEWAY. TODAY. WHICH IS STEADILY ERODING BY WAY OF CONTINUOUS TRANSMISSION COOLER LEAKS. IT CONTINUOUSLY COATS THE UNDERSIDE OF VEHICLE, REDUCING LIFE OF BELTS AND HOSES. GM DEALERS FEEL ITS NOT COVERED BY 5/100K POWERTRAIN WARRANTY, OR 36K BUMPER-BUMPER WARRANTY BECAUSE IT'S A LONG TIME GM PROBLEM A…
Owner-reported narrative. 18,000 miles reported. Look up ODI 10701504 at NHTSA ↗
Owner report 10484832 · 2012-11-15 (November 15, 2012)
HVAC SYSTEM BECAME OPERATIONAL WITH THE IGNITION TURNED OFF FOR AN UNKNOWN PERIOD OF TIME WHILE THE TRUCK WAS PARKED IN THE GARAGE. RELAY RESISTOR MODULE OVERHEATED CAUSING MELTING OF THE RESISTOR AND CIRCUIT BOARD. TRUCK CABIN AND VICINITY AROUND THE TRUCK HAD A STRONG SMELL OF BURNING PLASTIC. TRUCK CABIN FILLED WITH SMOKE. WAS ONLY ABLE TO TURN OFF THE HVAC SYSTEM AND STOP THE BURNING BY DISCONNECTING THE WIRING HARNESS. DEALER HAD TO REPLACE THE BLOWER MOTOR, RESISTOR, MODULE CONNECTOR AND RELAY. BURNING COULD HAVE CAUSED THE ENTIRE VE…
Owner-reported narrative. 92,000 miles reported. Look up ODI 10484832 at NHTSA ↗
Owner report 10786282 · 2015-10-27 (October 27, 2015)
THE PRIMER PUMP HOUSING DEVELOPS A SMALL LEAK AROUND A ELECTRICAL CONNECTION. THIS COULD LEAD TO A FIRE AS FUEL DROPS ON THE ENGINE. GM IS AWARE OF PROBLEM IT HAS BEEN ON GOING FOR SEVERAL YEARS. IT ONLY OCCURS WHEN VEHICLE IS RUNNING. NOTE-NO FIRE HAS HAPPEN TO MY VEHICLE, NOR DO I KNOW OF A FIRE OCCURRING. I JUST BELIEVE THIS IS UNSAFE. THE ONLY WAY TO CORRECT THE PROBLEM IS TO REPLACE PRIMER PUMP HOUSING.
Owner-reported narrative. 150,000 miles reported. Look up ODI 10786282 at NHTSA ↗
Owner report 10323063 · 2010-03-31 (March 31, 2010)
ENGINE SHUTS DOWN, "SERVICE BRAKE SYSTEM" MESSAGE APPEARS IN DISPLAY, ABS LIGHT ILLUMINATES. SINCE ENGINE SHUTS DOWN, LOSE STEERING AND BRAKING. LATEST INCIDENT OCCURED ON HIGHWAY DURING RUSH HOUR. THIS ALSO HAPPENED FIRST YEAR I OWNED THE VEHICLE (I BOUGHT IT NEW), THEY REPLACED THE UNDERHOOD FUSE BOX. THIS HAPPENED AGAIN ON MARCH 13. THEY REPLACED A BLOWN PCM FUSE AND SAID THEY COULD FIND NOTHING WRONG. WHEN IT OCCURED ON 3/29, I REPLACED THE FUSE 5 TIMES TO TRY AND GET OFF THE FREEWAY. AFTER EACH TIME IT WAS REPLACED, I COULD DRIVE 1-…
Owner-reported narrative. 33,800 miles reported. Look up ODI 10323063 at NHTSA ↗