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Question
I have a 1999 Chevy blazer.  I am having trouble with the outside air temperature gauge.  After having some work done the gauge was messed up. It could be 30 degrees outside and the gauge will say over 100.  The only thing that works is the compass.  I bought a chevy manual, and it says I need a code to reset the gauge.  However I haven't been able to find them.  Any help would be appreciated.

Answer
James;
Hi well if it was worked on the gauge that-could have been damaged, if so that will or can cause you to get false readings.James- I looked thru all of the ( OBDII ) booklets to try to find your data, but w/o a read out I cant find any
thing- can you get a meter to get me some codes to pop up  
than I can get you some readings, as if I have no read outs I have no ideas what is wrong.w/o the obdII#s

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Roger J.M. Warrington

Expertise

I can help you with most standard type things from 1955 chevys up to around 1975 (1975)>> chevys in differnt areas. engine work heads-cams-trannys-drive train-brakes-some elect. dos and donts. PS UP TO 1975 !! !!!!!!!!!!! I will try with any others after that date. state up to 1975 but I still get 2006-007 etc. I guess you do not read this far ! !

Experience

All i can remember growing up is working on cars and making them loud and fast , and when i started to make money i would sink all of it into my cars so i could get them to go faster and look great. what else is there !I would love a challange to trouble shoot, as it is fun finding what is wrong when all others can not .ON the older cars not past 1975s , etc. so please I will try to help with the newer cars but do not grade me bad if I can not help your 2006 car.etc.

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