Five problems related to manifold/header/muffler/tail pipe have been reported for the 2004 GMC Yukon. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2004 GMC Yukon based on all problems reported for the 2004 Yukon.
Upon start up of vehicle, a ticking noise was heard from the engine compartment. Upon inspection, found that the left rear exhaust bolt on the exhaust manifold had broken off causing exhaust leak. Upon investigation on the internet, this is a very common issue with the gm 6. 0 liter and other engines. This is a seriouse safety defect and also causes the emissions controls of the engine to be inoperable. Possible safety issues can and do include; carbon monoxide poisoning and the possiblity of engine compartment failure.
The problem I'm having is a horrible bubbling or gargling sound emmiting from my 2004 Yukon exhaust. It sounds really bad, enough to turn peoples heads while I'm sitting at the conveneience store or a drive thru. The dealer in which I bought it from states that they all make this sound, but I'm not stupid. I know others with the same make and year model and they do not have this problem. I just want it fixed. If I'm willing to pay $44,000 for a vehicle I expect it to look and sound great or at least look and sound like a new one. Please help!.
Exhaust system on my new 04 Yukon denali has an excessive amount of popping and cracking noise after it is turned off. I had an 03 denali prior to this and it did not do this. This has gone on since I got the vehicle. Dealer says there is nothing they can do about it.
When my 2004 GMC Yukon warms up, a loud repetitive clanging noise eminates from the exhaust system. This can be heard while driving and continues for a period after the vehicle is turned off. The Yukon was purchased new on 5/31/04 and began making the noise within 500 miles. GMC says engineering has been working on the problem since 11/03 and it involves metal in the exhaust system being deformed by the heat. I have spoken with several other Yukon owners and made a point to listen to other Yukons on the road and have not found another Yukon exhibiting the same problem. GMC refuses to replace the exhaust system. If the metal is deformed, how do I know that it is not leaking fumes into the passenger compartment?.
Loud pinging noise from exhaust which continues 5-10 minutes after car is turned off, also has vibration in steering wheel and dash when at a sit still in either drive or park, rpm are not changing when vibrating, exhaust is extremely loud.