Consumer Complaints
| Fail date | miles | occurences | Purchase date |
|---|---|---|---|
| UNKNOWN OR OTHER | |||
| 02/01/2012 | 35000 | ||
| Exhaust manafold bolts are breaking off for no apparent reason. i have four broken already and an exhaust leak developing. this appears to be a defect in manufacturing. i have a friend with two of the same trucks that the same thing has happened to. there are numerous complaints posted on the web. i have had many vehicals over the years and worked them hard but have never seen a broken exhaust manafold bolt on any of them. this can be a dangerous situation as having exhaust leaks under hood could cause a fire. as far as i know gm has not issued a bulletin or recall on this but there should be some remediation as this is an expensive repair and it is not a failure caused by the lack of maintenance. i have also heard reports of repaired units breaking again in about the same number of miles and having to be repaired again. | |||
| 11/16/2011 | 94500 | ||
| Broken exhaust manifold bolts. front and rear manifold bolts have broken on both the passenger and driver sides. as a result exhaust manifolds are now warping putting undue stress on remaining manifold bolts and creating an exhaust leak. bolts are steel, manifolds are cast, and heads are aluminum. dissimilar metals, heat, and moisture have caused the bolts to prematurely rust and fail. emissions dilution will not allow for a passing smog test in 2013. gmc refuses to address the issue at hand, even though this is a recurring issue on all v8 engines. estimate to repair; $2500. | |||
| 11/24/2010 | 65000 | ||
| Noticed a noise in the front suspension/drive train. an alignment shop checked the front end and they found that the front sealed wheel bearings were about to have a catastrophic failure. vehical has 65,000 miles and has never been subjected to harsh environments. was told that the vehical could not be driven safely. sealed bearings have no maintenance options and can create an accident. learned of other gmc front whell bearing issues while meeting with the shop to arrange for repairs. | |||