Problem Reports

GMC Sierra 2500 HD

Report: Check Engine Light Due to Gas Cap Issue

• Check Engine Light Due to Restricted Secondary Air Injection Check Valves
  One or both secondary air injection check valves may become restricted causing poor air flow re...

  Common Problems > GMC Sierra 2500 HD

• Misfireing on all 8 cylinders with no codes, or service engine light??
  A couple of weeks ago my 2004 GMC 2500hd started misfireing while driving. I took it to a GMC service center & they don't know whats going on with it....

  Q&A > GMC > 2004 GMC Sierra 2500 HD

• P0301 code came on and the truck is lurching a low RPM
  We bought a GMC sierra 2500HD a montha go, low miles. The check engin light has came on a few times and disappeared after a day or so. The we got off of it was P0301. I changed the spark plugs wi...

  Q&A > GMC > 2004 GMC Sierra 2500 HD

• service light
  my 4wd service light came on this morning but is now off could you tell me why?

  Q&A > GMC > 2004 GMC Sierra 2500 HD

• turbo stopped working
  driving my truck home last night and the check engine light came on and my turbo stopped workin...

  Q&A > GMC > 2004 GMC Sierra 2500 HD