1998 GMC SONOMA
151,000 MILES
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ANONYMOUS
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The AC nor heat is working. The fan blows, but it will not heat up or get cold
Oct 23, 2012 at 2:44 PM
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JDL
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  • 16,098 POSTS
Are there any applicable trouble codes for the hvac system? As far as the heater, do the heater hoses get hot? Does the engine reach normal operating temp? With the ac, does the compressor run?
Oct 23, 2012 at 3:46 PM