One problem related to manifold/header/muffler/tail pipe has been reported for the 2005 GMC Sierra 3500. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2005 GMC Sierra 3500 based on all problems reported for the 2005 Sierra 3500.
Engine exhaust manifold bolts break off on 2 different gm 1 ton trucks. Bad/ failed vehicle emissions and a huge repair bill for both trucks. 85,000 miles on both vehicles.
| Manifold/header/muffler/tail Pipe problems | |
| Engine Cooling System problems | |
| Cooling Fan problems |