heater controls freaking out - The 1947 - Present Chevrolet & GMC Truck Message Board Network

oldtek · 05-31-2011, 08:35 PM

ok heres the deal.

my 88 chevy pickups hvac controls will go crazy. everything will flash and the a/c will go on and off repeatedly and will get stuck on defroster. the only way to get it to stop is to pull the fuse, which leaves me without a heater or defroster. it used to be that if i leave the fuse out for a couple hours it would go back to normal and work fine, but now if i put the fuse back in it will just start freaking out again right away.

could this be the controls in the dash or could something else cause it to do this?

05-31-2011, 08:35 PM	#1
oldtek Registered User Join Date: Apr 2011 Location: northern california Posts: 123	heater controls freaking out ok heres the deal. my 88 chevy pickups hvac controls will go crazy. everything will flash and the a/c will go on and off repeatedly and will get stuck on defroster. the only way to get it to stop is to pull the fuse, which leaves me without a heater or defroster. it used to be that if i leave the fuse out for a couple hours it would go back to normal and work fine, but now if i put the fuse back in it will just start freaking out again right away. could this be the controls in the dash or could something else cause it to do this?



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