Question about 2002 Chevrolet TrailBlazer

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Cuts off when I turn the heat on. when the truck is idling or stationary and the heat is on, it will shut down. However as long as I am driving everything works properly.

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I would guess your battery cables are loose or dirty, either at the battery or on the starter or ground. Either that or your alternater is on it's way out. It works fine until the AC pump cuts in,which takes a lot of amps, and it kills the engine.

Posted on Nov 16, 2009

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