Cruise Control Problem on 2000 Buick Lesabre Custom

Tiny
SGT1205
  • MEMBER
  • 2000 BUICK LESABRE
  • 129,300 MILES
Cruise control button on steering wheel stays illuminated constantly (in off mode it has a dim illumination or sometimes flashes rapidly). The "CRUISE" indicator on the dash does not light (except for the startup process, and goes out with all other dash indications). I have power up to the module, and the ground at the module tests good. Now I have replaced the switch (to no avail) and I got a used CC Module at a used parts place, switched it out and it still did not work. The speedometer works just fine, so I'm thinking the VSS is alright. I'm out of ideas. What else?
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Friday, October 28th, 2011 AT 3:18 AM

5 Replies

Tiny
RIVERMIKERAT
  • MEMBER
Will the CC activate properly? The light on the wheel staying lit may be due to a short to or from the light and/or switch.
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Friday, October 28th, 2011 AT 3:31 AM
Tiny
SGT1205
  • MEMBER
No the Cruise Control will not work at all, and the "cruise" indication on the dash will not illuminate. Interestingly, when I disconnect the harness from the module, the light on the steering wheel switch begins to work normally (Light completly out on off, and light on when pushed on).
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Friday, October 28th, 2011 AT 3:44 AM
Tiny
RIVERMIKERAT
  • MEMBER
Ok. Here's the schematic for the cruise control system. You have a short somewhere. Download the file and change the extension to pdf as it's an Acrobat file.
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Friday, October 28th, 2011 AT 4:07 AM
Tiny
SGT1205
  • MEMBER
I've been working with a diagram. To date all wires have continuity and power from switch to module. Transmission was just re-installed due to a rebuild. The speedo works correctly, thus leading me to believe the VSS is alright. I tried another module, and steering wheel switches and nothing seems to be working. The on/off switch glows all the time, except when it's in the off position it has a faint glow or flicker. The "CRUISE" indicator on the dash only lights on startup as it should be goes off and will not light at any other time. Since I bought a used module, Ive wondered if that had the same problem and was not a good unit. I've seen this same problem described in a number of different Google searches, but never a solution/repair.
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Friday, October 28th, 2011 AT 6:42 PM
Tiny
RIVERMIKERAT
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It's possible both modules have the same problem. Have you checked any relays in the circuit?
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Sunday, October 30th, 2011 AT 5:29 AM

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