Repair Safety Notice:
This information is for general instructional purposes only. Vehicle repair can be dangerous.
Verify all information, follow manufacturer service procedures, use proper tools and safety equipment,
and consult a qualified repair shop when needed.
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BMDOUBLE
AUTOMOTIVE REPAIR CONTRIBUTOR
1,139 POSTS
The most common failure item is the vehicle speed sensor, but to start diagnosing this properly you will need to retrieve codes from the power-train control module and the instrument cluster module, then go from there.
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Feb 11, 2020 at 7:40 AM
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STRAILER
AUTOMOTIVE REPAIR CONTRIBUTOR
54,178 POSTS
Here is how you get he codes to confirm the failure. The output speed sensor is "A" on the diagrams.