One problem related to manifold/header/muffler/tail pipe has been reported for the 2001 GMC Sierra 2500. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2001 GMC Sierra 2500 based on all problems reported for the 2001 Sierra 2500.
Exhaust manifold leak due to broken exhaust manifold bolt. I am the original owner of the vehicle. The vehicle has been regularly and properly maintained. I understand this is a common problem for this gm vehicle due to defective parts. I purchased this vehicle new from a local GMC dealer.