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Speedometer works intermittently

Tiny
AARON BLACQUIERE
  • MEMBER
  • 2005 BUICK RENDEZVOUS
  • 3.4L
  • V6
  • 2WD
  • AUTOMATIC
  • 170,000 MILES
Speedometer works for a while, then stops, then works.
Sunday, May 6th, 2018 AT 1:15 PM

3 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 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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Monday, May 7th, 2018 AT 4:15 AM
Tiny
AARON BLACQUIERE
  • MEMBER
  • 4 POSTS
Check engine light is not on.
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Monday, May 7th, 2018 AT 2:52 PM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 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
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Monday, May 7th, 2018 AT 3:05 PM

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