Speedometer works intermittently

2005 BUICK RENDEZVOUS
170,000 MILES • 3.4L • V6 • 2WD • AUTOMATIC
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AARON BLACQUIERE
  • MEMBER
  • 4 POSTS
Speedometer works for a while, then stops, then works.
May 6, 2018 at 1:15 PM
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ASEMASTER6371
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 52,796 POSTS
Good morning.

There is a sensor on the transmission that controls the speedometer. It is a common failure.

Is the check engine light on? If it is, do you know the code?

Roy
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May 7, 2018 at 4:15 AM
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AARON BLACQUIERE
  • MEMBER
  • 4 POSTS
Check engine light is not on.
May 7, 2018 at 2:52 PM
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ASEMASTER6371
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 52,796 POSTS
Okay.

Then you will need an advanced scan tool to see if the signal from the sensor is reaching the PCM. If the signal is getting there then it is the instrument cluster is the issue.

If there is no signal then it may be the sensor not sending the signal.

Roy
May 7, 2018 at 3:05 PM