Table 1 shows five common engine and engine cooling related problems of the 1999 GMC Sierra 1500. The number one most common problem is related to the manifold/header/muffler/tail pipe (two problems). The second most common problem is related to the engine (one problem).
| Problem Category | Number of Problems |
|---|---|
| Manifold/header/muffler/tail Pipe problems | |
| Engine problems | |
| Engine Exhaust System problems | |
| Engine And Engine Cooling problems | |
| Radiator Hose problems |
My GMC sierra has the 5. 3 v8 engine and three of the exhaust manifold bolts are broken off and it is leaking exhaust fumes . Thes bolts should not break off so easily. I feel this is a safety issue and a recall should be issued to repair this problem. I know other owners who have the same problem. Read details...
1. When going over minor bumps consumer can hear rear leaf springs hit against each other, metal to metal sound; 2. When accelerating, consumer can hear a valve noise. Read details...
Broken exhaust manifold bolts. Factory installed exhaust manifold bolts routinely break on both sides of the engine. Nature of the failure and location of the broken bolts in the heads of the engine most often necessitate very expensive professional repair. Read details...