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Originally Posted by palfer
Hi--I have an 05' Avalanche. My speedometer just spins out of control. The needle has a mind of its own and in no way is tied to what speed the truck is actually doing. Any idea what/where to start?
thanks
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Most likley a bad speedometer head.
Check your dealer for warranty or recalls.
Does the odemeter mileage still work right?
Any check engine lights?
MT