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Starting/ignition

Tiny
MATT R.
  • MEMBER
  • 2007 BUICK LA CROSSE
  • 3.8L
  • 200,000 MILES
When I put the keys in the ignition and turn to "on", the instrument cluster goes haywire and if I go directly to "start" it won’t turn over and everything goes haywire. If I wait for about ten seconds, the instrument cluster normalizes and it will start. It began that way and now I have fluctuations in my rpm, going from 900 to 3500 rpm while idling.
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Wednesday, October 2nd, 2019 AT 3:54 PM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,602 POSTS
Hello,

This is common when the instrument cluster goes out and needs to be replaced. Here is a video of the job being done on a similar car with diagrams below to show you how on our car:

https://youtu.be/_HEC44xENxw

You will need to record the mileage and VIN so the re-builder can program the new cluster. Check out the diagrams (below). Please let us know what happens.
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Friday, October 4th, 2019 AT 1:40 PM

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