my 2006 chevy monte carle temp gauge is reading negative numbers on 2006 Chevrolet Monte Carlo

this is the temp outside and when it reads neg , numbers my AC also stops working

by in Johnson City, NY on June 14, 2013
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2 answers
ANSWER by , June 20, 2013
Check for a bad or unplugged ambient air temp sensor. It is located behind the front grille below and to the left of the hood latch.
ANSWER by , June 14, 2013
poss control head is bad