Table 1 shows five common engine and engine cooling related problems of the 2004 GMC Sierra. The number one most common problem is related to the manifold/header/muffler/tail pipe (three problems). The second most common problem is related to the diesel engine (three problems).
| Problem Category | Number of Problems |
|---|---|
| Manifold/header/muffler/tail Pipe problems | |
| Diesel Engine problems | |
| Engine Exhaust System problems | |
| Check Engine Light On problems | |
| Engine And Engine Cooling problems |
Exhaust manifold bolts breaking off causing exhaust leak where manifold bolts onto head. Due to exhaust leak now vehicle is throwing codes for catalytic threshold low. Which leads to a magnitude of problems to lack of power, poor fuel mileage and not being able to pass emission test in some states. Read details...
2004 Sierra caught on fire due to a malfunction in the truck. Read details...
At the above listed date my vehicle began blowing excessive blue smoke through the exhaust. I discovered at that time there had been a recall on the fuel injectors several years before. I attempted to remedy this with gm at that time and was told I was too late past the date to get service on the Read details...