Seven problems related to manifold/header/muffler/tail pipe have been reported for the 2003 Chevrolet Silverado 2500. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2003 Chevrolet Silverado 2500 based on all problems reported for the 2003 Silverado 2500.
The exhaust manifold bolts are breaking creating a fire hazard from the hot exhaust reaching the wiring harness, it is also creating fumes in my cab. First noted a noise a week ago, found it to be a exhaust leak and the leak has gradually gotten worse. I am unable to not drive to the truck due to work.
The exhaust manifold bolts are breaking on the 6. 0 engine. I think gm should do this repair since I have talked to several people and this is very common. It is a design defect as far as I am concerned. I have put up with this as it started as a small leak but is getting worse.
My 2003 chevy 2500 hd has an exhaust manifold leak and this is an ongoing and chronic problem with these vehicles. I can see evidence of hot exhaust gasses leaking into the engine compartment.
5 out of 8 exhaust manifold bolts are broken on the passenger side of vehicle and 2 on drivers side. I have 120k miles on vehicle.
I notice a ticking from the engine compartment over the last couple of days. I assumed it may be an exhaust leak and I was correct. This vehicle has a stainless steel exhaust system that should last a lifetime yet there seems to be a real problem with exhaust manifold bolts breaking off, causing exhaust leaks which pollute the air and ruin other vehicle components such as the catalytic converter. I am also thinking that the manifolds are warping causing the bolts to break. These repairs are very expensive and/or time consuming. Stainless steel bolts would have possibly prevented this problem. I understand that this problem affects 1999 to 2007 vehicles and I hereby request that a recall be forced upon the manufacturer. The manufacturer has been building cars long enough to know better. There is also a video on you - tube that explains this condition.
Tl-the contact owns a 2003 Chevrolet Silverado 2500 hd. While driving approximately 35 mph, a loud noise emitted from the engine compartment with the illumination of the engine warning indicator on the instrument panel. A certified mechanic stated that the failure was contributed to the the exhaust manifold. The vehicle had not been repaired. The manufacturer was notified of the defect. The approximate failure mileage was 79,000. Js.
My 2003 silverado pickup truck has been found to have a common and recurrent problem. Exhaust manifold bolts break, and on the driver side rear, they can be expensive to repair. A few minutes of web searching on this topic produced a number of results and my conclusion is the issue is common. The online complaints also indicate that the success rate for the repair is not good, with many repaired vehicles having subsequent bolt failures. My vehicle is in an authorized chevy service garage having the bolts replaced. The original estimate was for $486, if cylinder head did not need to be removed. The service technician broke a tap off in the rear most bolt location. I don't know if it happened before head removal or after. It became necessary to remove the cylinder head and was requoted at $1600. A call was made to gm 3-6-12. The response was that my truck was out of warranty and there fore they could be of no assistance in the matter. I am certainly aware of the warranty terms. My issue is with the scale of this engineering/manufacturing defect and the cost to the owners. The issue can cause emissions problems due to catalytic converter failure and further expense.