1998 GMC Suburban 4X4 not engaugeing

Tiny
ASSTCHIEF72653@YAHOO.COM
  • MEMBER
  • 1998 GMC SUBURBAN
  • V8
  • 4WD
  • AUTOMATIC
  • 187,000 MILES
I have replaced the front axle mounted acuator, the transfer case motor and the dash push button assm. And still nothing. When I turn the truck on all the lights will blink on the push button and then go off for a few seconds then the red nuetral light and 2wd and 4wd low lights will stay on? Does this truck have a " Transfer case control module"? And if so could that be the problem and where is it loacated. I also noticed that when I was put up the elec. Windows the lights on the 4x4 push buttons would dim down.
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Saturday, February 6th, 2010 AT 9:13 PM

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Tiny
FACTORYJACK
  • EXPERT
The transfer case control module is under the left side of the dash, by the steering column. If it is a non auto selectable FWD, you can ground pin 13 at the diagnostic connector(it is an orange wire), and the switch LED's should flash codes(If any) It would only be 1-4. It sounds like you may have a module faulty. Does the vehicle have any aftermarket stuff installed?
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Monday, February 8th, 2010 AT 11:39 PM

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