I have a 2004 Silverado 5.3L Z71 that the 4 wheel drive will not engage. The control switch lights come on at startup but then go off completely and will not respond. What is the possible problem?
2004 Chevy Silverado 5.3L. 4 wheel drive will not engage. Stays in 2 wheel drive. transfer case control lights up at initial start up, but go out thereafter.
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