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VZ V8 no speedo no shifts

Richard Kensley

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Oct 1, 2019
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Hi people I've got a problem with ss no speedo reading and doesn't want to shift gears. The problem was first Intermittent so rest pulling 10am red fuse cured it short period of time. As soon as you get high speeds and reduce speed it would gear down but not change back up to higher gears. Now it seems not to be able to reset just stays in higher gear and when u drive it revs to red line slams in another gear. Can anyone please advise me on possible faults to examine. I've changed throttle body no changes same problems
 

DavesSV6Tonner

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VZ S V6 Cab & Chassis
I'm guessing it might be a failed speed sensor or damaged wiring?
 
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