GMC Sierra problems
279 owner complaints with NHTSA, no active recalls. Here's where owners say it breaks.
Solid reliability overall. Common issues are concentrated in a few systems.
The data says walk unless this exact vehicle has documented proof the brakes was repaired or replaced.
- 5 fire-related complaints on the electrical system
- Brakes: 112 complaints, classified severe, failures cluster 30,000–86,762 mi
- Reliability score 7.4/10 — around the segment average
Our read of the federal NHTSA complaint and recall record for this exact year and model — not a substitute for a pre-purchase inspection. How we score.
Top trouble spots 8 categories with 3+ complaints
What owners are saying recent NHTSA-filed complaints · verbatim
My 2006 GMC has only 29,000 miles on it. I bought the truck in october 2009 with 16,000 miles. I keep the truck clean inside and out, top to bottom including under the vehicle. People comment to me all the time on how nice the truck looks. Brake line let go in yard. Pedal went…
Tl* the contact owns a 2006 GMC sierra 1500. The contact stated that when driving at various speeds or sitting idle in park, the four wheel drive switch would intermittently activate and independently shift into low drive. The vehicle was inspected by a dealer who informed the…
Total brake failure while in motion. Corroded brake line ruptured causing immediate loss of all fluid. Had this happened 5 minutes earlier, I would have been on a four lane highway in bumper to bumper christmas traffic. At 70 years old I can only imagine how catastrophic an…
In late october, 2013, I purchased my 2006 GMC sierra c1500 standard cab, 2wd pickup from a private owner. On or about, december 01, 2013, I noticed that the "service air bag" warning message appeared intermittently. The "airbag" illuminated symbol in the dash instrumentation…
Estimate your repair exposure
Drag to your current mileage. Numbers are derived from this vehicle's complaint history.
Common questions
Is the 2006 GMC Sierra reliable?
Mostly yes. With a reliability score of 7.4 out of 10 based on 279 owner complaints filed with NHTSA, the 2006 GMC Sierra is generally a sound vehicle. The areas to watch are listed in the top problem section above — most are budget items, not deal-breakers.
Should you avoid the 2006 GMC Sierra?
On the NHTSA data, the 2006 GMC Sierra is one to avoid unless a specific vehicle proves otherwise. The data says walk unless this exact vehicle has documented proof the brakes was repaired or replaced. The record behind that call: 5 fire-related complaints on the electrical system; Brakes: 112 complaints, classified severe, failures cluster 30,000–86,762 mi; Reliability score 7.4/10 — around the segment average. This is our read of the federal complaint and recall data — not a substitute for a pre-purchase inspection.
What's the most common problem on the 2006 GMC Sierra?
Based on NHTSA records, the most-reported issue is brakes, with 112 complaints filed. Typical failure occurs around 66,454 miles. Average repair cost runs about $450 at an independent shop.
What's the most expensive thing that goes wrong?
The airbags is one of the costlier repair items. Average repair cost runs about $1,100 at an independent shop. Typical failure occurs around 94,728 miles. Catching early warning signs can sometimes extend life by 20–30,000 miles.
How do I check if my GMC Sierra has open recalls?
Paste your VIN into the decoder at the top of this page. We pull live from NHTSA, so you'll see exactly which campaigns apply to your vehicle and whether the dealer has logged the fix. Recall repairs are always free regardless of mileage or warranty status.
Is an extended warranty worth it on a 2006 GMC Sierra?
Math is straightforward: a quality service contract runs $1,800–3,500 over 3 years. With 279 complaints on file and the costliest repair averaging $1,100, one major failure more than pays for it. The catch is reading the contract — many providers exclude wear items and require pre-authorization, so cheaper plans are not always better value.