Original problem: my 2002 yukon xl was running poorly when the weather turned cold - below 30 degrees. Problem diagnosed as faulty intake gaskets due to improper design. Second problem: it became hard to start, and a couple of days later, it would not start at all. Problem diagnosed as faulty fuel pump. Both problems are because they were designed for use with ethanol or unleaded gas. I only use unleaded (never have seen a station that sells ethanol). If your gm vehicle has a 5.3l v8 engine, and the VIN has a z in the 8th position, be aware that this might happen to your vehicle. If not under warranty, it is very costly! The gaskets and the fuel pump alone cost over $630. Labor over $500.
2002 GMC Yukon XL engine complaints
Page 2 of 2: complaints 11 to 12 of 12, newest first, as owners wrote them.
Dt: the consumer believes that there are electrical problems with the gmc. The water pump was out, the radio has quit working 5 times, and has been replaced 4 times, the windows on the passenger quit, and the regulator was replaced 4 times. This has happened at 35,000 miles.
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