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Re: 99+up common problems
The flap that directs the air flow to either the defrost vents/dash vents or floor vents is controlled by a servo which goes out. Happened on my 03 Z71 but the dealer covered it. I believe they mentioned it would have cost me about $250 to repair.
Other problems are the fuel pump. If you have trouble getting the engine to start when you have less than a 1/4 tank of gas it is a symptom of the fuel pump darn close to giving up the ghost.
Found a whole bunch of mud and debris in the gas tank when it was dropped to replace the pump.
The dashboard ABS light and parking brake light coming on and staying on with no codes is also a common problem.
From my own experience regarding electrical issues I would check all the ground connections especially the one on the top rear passenger side of the engine block.
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