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HELP after new gears speedo no work!

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Old Mar 16, 2013 | 05:17 PM
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I just got 4.88 installed.

I used Accupro on it and now I have a check engine light and no speedometer, like stuck at 0.

HELP please.



Edit - it was working when I left the place. Sorry for the confusion.
Last edited by Jharkins26; Mar 17, 2013 at 05:14 AM.
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Old Mar 16, 2013 | 06:04 PM
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check that they reconnected your speed sensors...or maybe broke them in the process.

there are 2 on each axle, 1 near each wheel.


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Last edited by OH9JK; Mar 16, 2013 at 06:33 PM.
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Old Mar 17, 2013 | 05:22 AM
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I checked them, we are all good here. I was wondering if my programmer did it?
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Old Mar 17, 2013 | 05:29 AM
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Use the programmer to reset and then see if the speedo comes back.
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Old Mar 17, 2013 | 06:23 AM
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I have told the computer that I have 4.88. It says it works, "successful" and then I disconnect it and try to drive it and boom. Still No speedo and a check engine light comes on.

I have done it 3 times now. I am going to try again this morning.
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Old Mar 17, 2013 | 06:29 AM
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Originally Posted by Jharkins26
I have told the computer that I have 4.88. It says it works, "successful" and then I disconnect it and try to drive it and boom. Still No speedo and a check engine light comes on.

I have done it 3 times now. I am going to try again this morning.
Have you thought to check for a code?
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Old Mar 17, 2013 | 06:38 AM
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Originally Posted by ronjenx
Have you thought to check for a code?
This. My guess is a broken sensor.
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Old Mar 17, 2013 | 07:35 AM
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P0012 is the code I get back
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Old Mar 17, 2013 | 08:17 AM
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Originally Posted by Jharkins26
P0012 is the code I get back
P0012 doesn't appear in the 2008 service manual.
It refers to a camshaft mis-timing in bank 1. The 3.8L engine has only one cam.

Strange code have been known to show; codes the are not applicable to the vehicle.
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Old Mar 17, 2013 | 10:56 AM
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Thanks for the help, I'm gonna call hypertech on Monday and see if the Accupro is bad.

After doing research it seems like others have had this issue with them.
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