Two problems related to engine noise have been reported for the 2000 GMC Sierra 1500. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2000 GMC Sierra 1500 based on all problems reported for the 2000 Sierra 1500.
My 2000 GMC pick up truck has a loud engine noise referred to as piston slap. The noise has been present since I purchased the vehicle. I have since found that this is a common defect with some gm engines. The dealer states that there is nothing wrong with my vehicle but many web sites describe it as a manufacturing & design defect. I believe this causes decreased performance and increased fuel consumption.
Continued excessive engine noise from pistons.