Question about 2000 GMC Jimmy
The lights on all modes go amber when i turn on key, but when i start the car only the 2hi light stays amber, no matter what buttons i push on the 4wd switch. It will not shift into any 4wd mode. Changed the fuse even though it seemed to be good, still nothing. I don't know if the 4wd is vaccuum like the older ones , electric? What? We have over 2 feet of snow here and need the 4wd to work but don't want to get burned by a repair shop.
I have had the same problem with my 2000 jimmy. Disconnect the battery for approx 1 minute and then reconnect, this should reset the computer. It has worked for me every time. I was told it was a glitch with GMC.
Posted on Jan 04, 2009
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I had the same problem with my 1999 Silverado which would blink several times on the mode I selected then go back to the 2 wheel High. I found the switch module to be defective, after replacing it I have never had the problem again.
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