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2002 Pontiac Bonneville Cruise Control

Tiny
JOHNBOULET
  • MEMBER
  • 2002 PONTIAC BONNEVILLE
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 70,000 MILES
Unintended acceleration at highway speeds when cruise control is on. If I apply gentle pressure on accelerator pedal (passing on Interstate) when cruise control is set, car continues to accelerate after I "let up" on the pedal. I have to tap the brake to stop acceleration. Is the cruise control "module" defective? [Module was replaced 3 years ago after cruise control failed completely]
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Sunday, January 11th, 2009 AT 12:06 AM

1 Reply

Tiny
BLUELIGHTNIN6
  • MECHANIC
  • 16,542 POSTS
Inspect the following before replacing the module :
-Proper operation of brake lamps
-Throttle linkage for mechanical binding which could cause the system to malfunction
-Cruise control cable adjustment, should have minimum slack
-If DTCs (Diagnostic Trouble Codes) are stored, scan with diagnostic tool
-EMI on speed sensor signal circuit may cause erratic cruise control operation

Post results of the inspections and I will follow up.

Thanks for using 2carpros. Com!
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Sunday, January 11th, 2009 AT 12:23 AM

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