Speedometer not working after replacing rear integration module

2002 CADILLAC DEVILLE

110,000 MILES

CEDWARDS2460

MEMBER
2 POSTS

Replaced the rear integration module due to door locks, gas cap etc., not working. All that is now working but suddenly the speedometer and odometer are not working. Could this be related to the rear module work?

Aug 26, 2019 at 6:26 AM

STRAILER

✓ASE Certified Mechanic
54,832 POSTS

I don't think they are related. here is a wiring diagrams for the rear integration module and I don't see anything they deals with the speedometer. so it must be the vehicle speed sensor when out. here are the wiring diagrams for the module so you can see for yourself and the sensor location so you can change it out. Check out the diagrams (below). Please let us know what you find. We are interested to see what it is.

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Professional Diagram for 2CarPros Members
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Aug 27, 2019 at 11:44 AM

CEDWARDS2460

MEMBER
2 POSTS

Turns out it was a relay that got unplugged or something when they were replacing the module. Thanks for the response.

Aug 28, 2019 at 9:36 AM

STRAILER

✓ASE Certified Mechanic
54,832 POSTS

Nice work, we are here to help, please use 2CarPros anytime.

Aug 29, 2019 at 10:37 AM

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