Three problems related to manifold/header/muffler/tail pipe have been reported for the 2008 GMC Envoy. The most recently reported issues are listed below.
Our 2008 GMC Envoy kept on getting louder and louder as time went on and when I went to check it out I found that the exhaust manifold had a crack in it about 3. 5 inches long. If feel that this should be a recall do to I changed 3 od them in other GMC Envoys in the last 6 months. I own a state inspection repair garage in pennsylvania. This is a very poor layout by gm. Also the secoundaryair pump on this same vehicle is a command problem. And the wiper spray nosal is also another command poor design.
I started my vehicle in the am and it made a loud muffled noise. Took it to the mechanic and he showed me a picture of a crack in th exhaust manifold. I looked online and saw recalls for other years and models for GMC and chevy. I think the 2008 chevy Envoy should be included. It seems to be that the manifold is defective.
I started my vehicle on Monday morning and it was unusually loud. After inspection, I found my manifold was cracked.
| Manifold/header/muffler/tail Pipe problems | |
| Engine Exhaust System problems | |
| Engine And Engine Cooling problems | |
| Check Engine Light On problems | |
| Car Stall problems | |
| Engine Cooling System problems |