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Jerry
Jerry, Master Mechanic
Category: Buick
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2001 buick century: cruise control not working

Customer Question

cruise control not working on a 2001 buick century. fuse ok. where do we go next?
Submitted: 5 years ago.
Category: Buick
Expert:  Jerry replied 5 years ago.

Hello and welcome to Just answer.com, Super mechanic here. About your vehicle.

There is a test procedure for the cruise control. It can be tested with a 12 volt test light if you have one. If not, then a volt meter would do.

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DIAGNOSTIC AIDS
To avoid misdiagnosis:

  • Inspect for proper operation of the brake lamps.
  • Inspect throttle linkage for mechanical binding which could cause the system to malfunction.
  • Inspect cruise control cable for adjustment, should have minimum slack.
  • Inspect for stored Diagnostic Trouble Codes (DTCs) in the PCM.
  • EMI on the speed sensor signal circuit may cause erratic cruise control operation.

CONDITIONS FOR ENABLING CRUISE CONTROL

  • When vehicle speed is more than 40 km/h (25 mph ).
  • When PARK, REVERSE, NEUTRAL, or 1st gear IS NOT indicated.
  • When an over/undercharged battery condition DOES NOT exist.
  • With normal engine RPM.
  • Without high engine RPM (fuel cut-off).


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Expert:  Jerry replied 5 years ago.

Please don’t forget to hit the accept button though, that is the only way we get paid, thanks.

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