2008 Gmc SIERRA problems and owner complaints
Explore the records behind recurring owner reports.
Key facts
68 owner complaints analyzed
2 distinct recall campaigns
66,850 mi median reported failure mileage
Scope: 2008 model year. Data snapshot: . 50 complaints include usable failure mileage.
Most common problems
Air Bags is the most frequently named component, appearing in 29 of 68 complaints (42.6%). A complaint can name multiple components.
| Topic | Matching reports | Share of complaints |
|---|---|---|
| Braking behavior | 3 | 4.4% |
| Steering behavior | 3 | 4.4% |
| Electrical and battery issues | 2 | 2.9% |
| Transmission and shifting | 1 | 1.5% |
| Fuel system concerns | 1 | 1.5% |
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 |
|---|---|
| Air Bags | 29 |
| Electrical System | 15 |
| Latches/Locks/Linkages | 11 |
| Structure | 5 |
| Structure:Body | 4 |
| Unknown Or Other | 3 |
| Electronic Stability Control (Esc) | 2 |
| Power Train | 2 |
Air Bags: 29; Electrical System: 15; Latches/Locks/Linkages: 11; Structure: 5; Structure:Body: 4; Unknown Or Other: 3; Electronic Stability Control (Esc): 2; Power Train: 2
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 | 12 |
| 50,000 to 74,999 | 17 |
| 75,000 to 99,999 | 11 |
| 100,000 to 149,999 | 6 |
| 150,000 and above | 2 |
Under 25,000: 2; 25,000 to 49,999: 12; 50,000 to 74,999: 17; 75,000 to 99,999: 11; 100,000 to 149,999: 6; 150,000 and above: 2
50,000 to 74,999 miles has the most reports with usable mileage (17). 18 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 |
|---|---|
| 2009 | 1 |
| 2010 | 3 |
| 2011 | 3 |
| 2012 | 9 |
| 2013 | 5 |
| 2014 | 22 |
| 2015 | 7 |
| 2016 | 16 |
| 2021 | 2 |
2009: 1; 2010: 3; 2011: 3; 2012: 9; 2013: 5; 2014: 22; 2015: 7; 2016: 16; 2021: 2
Pattern summary
Air Bags leads the component reports. Braking behavior appears in 3 complaint narratives. Steering behavior appears in 3 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 10429495 · 2011-10-11 (October 11, 2011)
ON SEPT. 28TH ABOUT 1PM I WAS TRAVELING ON A DIRT ROAD WHEN I APPROACHED SOME POT HOLES. THE DAY WAS SUNNY AND DRY AND I WENT TO APPLY MY BRAKE BUT AS I HIT THE BRAKES TO SLOW DOWN I HIT THE FIRST COUPLE AND MY SIDE IMPACT AIR BAGS DEPLOYED. I TOOK IT INTO THE DEALER AND THEY ADVISED THAT THE COMPUTER ADVISED IT WAS IN A ROLL AND DEPLOYED THE SIDE IMPACT AIR BAGS AND ALSO THEY ADVISED THE COMPUTER SENSED THERE WAS SOMEONE IN THE PASSANGERS SEAT WHEN THERE WASN'T SO MAYBE THE SEAT SENSORS A BIT SENSITIVE. IT WAS EVIDENT I WASN'T IN A ROLL AND TH…
Owner-reported narrative. 95,000 miles reported. Look up ODI 10429495 at NHTSA ↗
Owner report 10597507 · 2014-06-10 (June 10, 2014)
THE FUEL LINES ARE RUSTED THROUGH SPRAYING FUEL TO UNDER SIDE OF TRUCK. THE LINES RUSTED THROUGH WHILE DRIVING FIFTEEN HOURS STRAIT FROM FLORIDA. IF THE FUEL WOULD HAVE HIT THE TAIL PIPE OR DIESEL PARTICULET FILTER WHEN REGENERATING, THERE COULD HAVE BEEN A SERIOUS FIRE. I HAVE BEEN THROUGH AN EXPLOSION AT WORK AND KNOW WHAT IT IS LIKE TO BE BURNED. I ONLY DROVE THIS TRUCK DAILY TWO WINTERS BEFORE I GOT HURT AND LAST WINTER IT WAS IN FLORIDA. I HAVEN'T EVEN CHANGED THE FRONT BRAKES YET BUT THE FUEL LINES ARE SHOT. SHAME ON GM AND SHAME O…
Owner-reported narrative. 93,792 miles reported. Look up ODI 10597507 at NHTSA ↗
Owner report 10469438 · 2012-08-06 (August 6, 2012)
WHILE DRIVING PULLING A BOAT TRAILER TRUCK LOST ALL POWER DOORS STARTED LOCKING AND UNLOCKING CONTINUALLY,ALL GAUGES AND WARNING LIGHTS COME ON TRUCK LOST POWER AND CUTS OFF LOOSING BREAKING AND STEERING, RADIO RESETS , SPEAKERS NOT WORKING. SERVICE TRACTION CONTROL WARNING COMES UP SERVICE STABILATRAC COMES UP , SERVICE BATTERY/CHARGING SYSTEM. *TR
Owner-reported narrative. 63,370 miles reported. Look up ODI 10469438 at NHTSA ↗
Owner report 10588831 · 2014-05-16 (May 16, 2014)
DRIVING HOME, THE SPINDLE ARM BROKE, CAUSING THE TIRES TO LOSE STEERING ABILITY, LEADING TO THE LOSS OF CONTROL AND THE TRUCK GOING INTO PENSACOLA BAY. NO AIRBAG DEPLOYMENT. DRIVER KNOCKED UNCONSCIOUS. *TR
Owner-reported narrative. 78,000 miles reported. Look up ODI 10588831 at NHTSA ↗
Owner report 10508300 · 2013-04-15 (April 15, 2013)
ON THE MORNING OF APRIL 11 WE HAD A SEVERE THUNDERSTORM AT APPROX. 3:00AM. LATER IN THE MORNING AT APPROXIMATELY 6:30AM I FOUND MY 2008 SIERRA TRUCK RUNNING IN MY GARAGE WITH THE GARAGE DOORS SHUT. THE HEADLIGHTS WERE FLASHING AND THE GARAGE WAS EXTREMELY HOT DUE TO THE ENGINE RUNNING. THERE WAS A LOT OF WATER CONDENSATION ON THE FLOOR INDICATING THAT THE ENGINE HAD BEEN RUNNING FOR QUITE SOME TIME. THE TEMPERATURE GAUGE WAS AT RUNNING TEMPERATURE. MY KEYS WERE IN THE IGNITION SO I OPENED THE GARAGE TO AIR OUT THE CARBON MONOXIDE AND TOOK MY W…
Owner-reported narrative. 71,500 miles reported. Look up ODI 10508300 at NHTSA ↗
Owner report 10489497 · 2012-12-21 (December 21, 2012)
TRANSMISSION LINES LEAKING AROUND CRIMPED PART OF LINE. RESEARCHING THIS ISSUE ONLINE,MANY GMC/GM VEHICLES ARE HAVING THIS ISSUE. THERE SHOULD BE AN EFFORT BY GM TO INSTALL BETTER LINES. *TR
Owner-reported narrative. 68,700 miles reported. Look up ODI 10489497 at NHTSA ↗
Owner report 10668062 · 2014-12-23 (December 23, 2014)
BEGAN TO SMELL FAINT RAW GAS FUMES AROUND THE VEHICLE IN THE SUMMER. IN THE AUTUMN MONTHS THE RAW GAS ODOR SMELL INTENSIFIED AND WAS VERY STRONG WITH AN OVERCOMING PRESENCE IN THE CABIN WHILE DRIVING. I BROUGHT THE VEHICLE TO MY SHOP FOR DIAGNOSTIC. THE MECHANIC (NON GMC GARAGE) CALLED BACK SEVERAL HOURS LATER AND SAID I HAD BEEN DRIVING A POTENTIALLY DISASTER. HE ASKED ME TO SEE FOR MYSELF. I WAS ABLE TO VIEW THIS FIRST HAND AFTER HE HAD REMOVED THE FUEL TANK FROM THE VEHICLE. THE FUEL PUMP IS MOUNTED INTO A DEEP SUMP ON THE TOP OF THE GAS…
Owner-reported narrative. 130,000 miles reported. Look up ODI 10668062 at NHTSA ↗