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What would cause the 4 wheel drive to not engage on a 99 Chevy Blazer electrical problem or a problem with the actual transfer case?


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2004-08-04 19:48:56
2004-08-04 19:48:56

I had the same thing go wrong with my '99 Blazer a few months back. Luckily it was under warranty because the transfer case had to be replaced. The little button lights on my dashboard that would tell me if the truck was in 2-hi or whatever else were out too. When I took it in, the guy mentioned that he already saw a few of these same exact issues within the last month too. BK I am currently going thru this myself on a 4 wheel drive Jimmy. It turns out that GM has a problem behind the right front kick panel.{At right of passengers feet}. There is an electronic control module there screwed onto the sheetmetal behind the kick panel. The electrical plug and connections corrode on this module{about 4"x6"with blue plug. Mine had the wires rotted off. This module operates the transfer case. It is about $500.00 but usually can be repaired at the connections. It is a stupid place to put it but the first place to look for trouble.

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Trick question. The actual TRANSFER is a chemical event, with the release of a chemical transmitter. The ACTION of this chemical is ultimately converted into an electrical event, or impulse. So, the answer they are looking for is probably true.

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It depends on the problem but the solution is always the answer.

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Since no actual problem is listed here I would have to say diagnose the issue, find out if it is engine, drive train, frame, electrical, fuel or ignition problem and rule out possibilities until you have a clear issue to resolve.


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