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Speedo not working

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Old Jan 6, 2015 | 05:38 PM
  #1  
badger2196's Avatar
badger2196
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From: Larkspur, CO
Speedo not working

My speedo has stopped working (it started failing by going up to a certain speed and then stopping, but gradually got the point where it doesn't work at all). My cruise control is also non-functional (I assume that's because it needs to know what speed I am doing!). The ABS light is also on (related?).

I have seen threads on this related to automatic tranny trucks, but mine is a 6 speed manual and I have no idea where to start. Any ideas guys?
 
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Old Jan 6, 2015 | 06:58 PM
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Speedo is determined from the vehicle speed sensor vss , which is on the rear differential. It's part of the abs system so ya it makes sense that the lights on. I'm not sure how to properly diagnose the problem without just throwing a new vss at it. I know with AE you have to go into abs to recalibrate the speedo for bigger wheels. Maybe there is a functional test in there you can run?
 
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Old Jan 6, 2015 | 10:40 PM
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From: AL, Reform
It's the rear speed sensor as that is where the truck reads the speed from.
 
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Old Jan 7, 2015 | 01:50 AM
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what they said speedo senseor on rear akle just make sure you clean around it before removing or the crap will fall into the housing
 
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Old Jan 7, 2015 | 10:14 AM
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Thanks for the replies. VSS investigation is set for the weekend (and sounds a lot easier than fishing around with a speedo cable!).
 
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Old Jan 7, 2015 | 11:01 AM
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its very easy should be a couple minutes and done
 
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Old Jan 7, 2015 | 06:11 PM
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From: AL, Reform
There is no speed cable all electronic
 
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