Two problems related to engine exhaust system have been reported for the 2004 Chevrolet Silverado 1500. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2004 Chevrolet Silverado 1500 based on all problems reported for the 2004 Silverado 1500.
Emissions defect concerning broken exhaust manifold bolts. Due to this issue truck can not pass arizona state inspection do to engine light coming on. Thousands of silverado, sierra, suburban, tahoe, yukon and even escalade owners have spent millions on this problem after their warranties ran out and some can't renew their licenses for failing an etest because of it. Please help get gm to recall this.
The contact owns a 2004 Chevrolet Silverado 1500. The contact stated that the motor was cracked which caused oil and antifreeze to combine and emit through the exhaust pipe. The heat failed to operate normally and the contact observed that approximately one gallon of antifreeze and 2 quarts of oil leaked out of the vehicle. The identical failure occurred previously. A local mechanic confirmed that the engine was cracked between cylinder 3 and cylinder 5 and needed to be replaced. The manufacturer advised her to have the vehicle inspected by an authorized dealer although her warranty was not valid for the repair. The vehicle has not been repaired. The current mileage was approximately 89,000. The failure mileage was approximately 88,000. Updated 12/30/09 updated 01/04/10.