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Old 07-29-2012, 10:55 PM   #1
RaTcheTmasTer
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Join Date: Jun 2009
Location: Pleasant Grove, in the Mountain West.
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temp on rear view mirror not working??

the lights on onstar are still on but the temperature read out has gone blank.

This is on a 2002 gmc sierra with the 5.3.

Anyone know what is up with it?

Thanks.

Last edited by RaTcheTmasTer; 07-30-2012 at 12:18 AM.
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Old 08-05-2012, 12:09 AM   #2
hugger6933
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Location: Marianna Arkansas
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Re: temp on rear view mirror not working??

Check the sensor is behind the grille on the core support brace. You may have to take the air baffle off of the top of the grille/radiator support to gain access. Jim
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Old 08-15-2012, 09:16 PM   #3
barrybryant29
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Re: temp on rear view mirror not working??

Mine does that, I tap right top of mirror with my wedding ring & it comes on.
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