Question about 1999 GMC Jimmy
The shift solenoids are inside the tranny, just pull the pan and the filter and you will have a 20 lb piece of metal with a million slots cut in it called the valve body, in it contains, 2 shift solenoids and one lock up thing and one other electric thing, I would have to peek in the book for that one. But you can access this easy enough, your tranny will drip for days while you work on it, and the solenoid might not fix the problem. But a filter and partial oil change will help. Check it out, hope this helps.
Posted on Oct 07, 2010
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Posted on Jan 02, 2017
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Feb 26, 2015 | 1995 GMC Jimmy
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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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