2001 GMC Sierra Cruise Control

Tiny
DARFAIREY
  • MEMBER
  • 2001 GMC SIERRA
  • V8
  • 2WD
  • AUTOMATIC
  • 122,000 MILES
The cruise control dosn't work on my truck. I thought that it might be the switches on the steering colum at first so I disconnected the harness plug on the cruise control servo under the hood of the truck and took some voltage readings while pressing the various buttons and all of those are working properly, and I also checked the cable going from the servo to the throtle body and it appears to be good and connected. So the question is where do I go next/what else can I check myself before going into the dealership. The truck is a 1500 with 5.3 v8. Thanks
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Saturday, July 10th, 2010 AT 3:04 AM

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Tiny
INTERNETMECHANIC
  • MEMBER
Below is the diagram for cruise module, I didn't know if you knew which circuit was which? Also, there are some codes for the cruise control. Have the codes checked, if you haven't already. Some of the national brand autostores used to check some codes for free.


http://www.2carpros.com/forum/automotive_pictures/512072_cruise_control_module_wiring_1.jpg

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Saturday, July 10th, 2010 AT 10:20 AM

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