1988 - 1998 (GMT400) Section for all discussion related to the 1987-1998 Chevrolet and GMC trucks.

Climate Control update

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Old Dec 21, 2021 | 6:34 PM
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Default Climate Control update

Update on previous thread,
. Climate control module has stopped working completely, no lights , none of the fan speeds work, nothing. First thing I want to do ,before buying a new module, is recheck fuses and relays , but I don't know which ones to check!? I have the diagram but there are several that seem to pertain to HVAC controls and whatnot , is the module on a fuse inside the truck? Or is it on a relay under the hood? Just would like some advice on which fuse or relay to check or replace before I drop $100 on a new module thank you
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Old Dec 22, 2021 | 8:04 AM
  #2  
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From: Utah, USA
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Originally Posted by Jesse9657350
Update on previous thread,
. Climate control module has stopped working completely, no lights , none of the fan speeds work, nothing. First thing I want to do ,before buying a new module, is recheck fuses and relays , but I don't know which ones to check!? I have the diagram but there are several that seem to pertain to HVAC controls and whatnot , is the module on a fuse inside the truck? Or is it on a relay under the hood? Just would like some advice on which fuse or relay to check or replace before I drop $100 on a new module thank you
check all the fuses. It will take all of a few minutes. If i had to guess, if it is a fuse, it will be in the fuse panel that is on the drivers side of the dash, behind the door. But, i would check the ones under the hood too.
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Old Dec 22, 2021 | 5:07 PM
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Working on it thanks guys

Last edited by Jesse9657350; Dec 22, 2021 at 5:37 PM.
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