Three problems related to manifold/header/muffler/tail pipe have been reported for the 2004 Chevrolet Avalanche. The most recently reported issues are listed below.
The exhaust manifolds bolts are snapping off which is causing leaking and noises (ticking sounds near drivers side) which can be smelled in the cabin and heard in the cabin of vehicle. I been told by other mechanics that this is a severe problem with 5. 3 liter and 6. 0 liter engines made by gm. . This repair will be in the thousands to fix.
The exhaust manifolds fastners are snapping off which is causing carbon monoxide to fill the cabin area of the vehicle. This hazard jepordizes the health of every person driving or riding as a passenger in the v8 powered vehicles. This is happening to newer models as well. Gm is wanting to charge the consumer $1,500-$3,000 to due repairs for defective parts.
My 2004 Avalanche is smoking coming from the tail pipe when I start it.
| Manifold/header/muffler/tail Pipe problems | |
| Engine Cooling System problems | |
| Engine And Engine Cooling problems | |
| Car Stall problems | |
| Coolant Leaking problems | |
| Check Engine Light On problems |