Question about 2005 Buick Rendezvous AWD

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Speedometer problem 2005 rendezvous

Racing speedometer 80-90 mi per hr. at 50 when stopped and 20 mph when engin off. What is happening? Overnite goes back to zero

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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emissionwiz
  • 76846 Answers

SOURCE: LeSabre 2005 speedometer whacked out

This is an electronic speedometer, nothing is user repairable, the circuit board fails and you get your problem, you will have to pull the speedo and send it out to an authorized GM repair station, they are all over the country, one company that does this is called SPEEDOTACH, LOOK THEM UP ON THE INTERNET.

Posted on Oct 17, 2008

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  • 366 Answers

SOURCE: 2004 Buick LeSabre. First noticed speedometer was

sounds like an instrument cluster failure or a computer problem.

Posted on Nov 22, 2009

  • 20 Answers

SOURCE: 2004 Buick Rendezvous, speedometer fluctuations

Turns out this is a common problem for the Rendezvous.
I took it to a mechanic and after he tested to see if all the speed sensors were working with his handheld computer reader, (because there is no speedometer cable anymore) He reset the needle by turning the key about 25 times as far as possible without starting the vehicle. The speedometer needle came back a bit each key turn till it reached zero. It's been working fine since.

Posted on Dec 11, 2009

Z71guy
  • 154 Answers

SOURCE: speedometer stopped working

Pretty common problem with these. Here's a guide to learn how to fix GM instrument clusters yourself, I used it to fix mine and it worked great.How to guide for Rendezvous instrument cluster repair

Posted on Oct 05, 2010

Z71guy
  • 154 Answers

SOURCE: Speedometer goes to zero while driving at highway

Pretty common problem with these. Here's a guide to learn how to fix GM instrument clusters yourself, I used it to fix mine and it worked great.How to guide for Rendezvous instrument cluster repair

Posted on Oct 05, 2010

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1 Answer

My speedometer on my 2005 Buick rendezvous starts off on zero and then shoots up to 110 when I am at a complete stop. I have changed the speed sensor module and checked the fuses. What else could it b


What module did you replace ? Was the vehicle transmission shifting OK ? The gauge is controlled by a stepper motor inside the instrument cluster , GM had bad stepper motors 03 to 06 .That is probably your problem .

Speedometer
The instrument panel cluster (IPC) displays the vehicle speed as determined by the engine control module (ECM)/powertrain control module (PCM). The ECM/PCM converts the data from the vehicle speed sensor to a 4,000 pulses/mile signal. The IPC uses the vehicle speed signal circuit (4,000 pulses/mile), class 2 message from the ECM/PCM in order to calculate the vehicle speed. If the IPC detects a malfunction in the vehicle speed signal circuit from the ECM/PCM, the IPC uses the class 2 message from the EBCM, indicating the vehicle speed as a backup. If the speedometer reaches (108 mph) the fuel will shut-off, and it will turn back ON when the speedometer is at (106 mph). The speedometer displays either miles or kilometers as requested by the activation of the english/metric button on the driver information center (DIC). The associated indicator (km/h or mph) illuminates.

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check and see if the wire on back off speedomter is loose and check your vehicle speed sensor see if working or broke and you also have wheel speed sensors that could be malfunctioning

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