Question about 1995 GMC Sierra C1500

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How do I replace a 1995 GMC Sierra A/C Heater Control Assembly?

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If you have tilt stearing, lower the stearing wheel. Carefully remove the dash trim around the instrument panel and radio a/c controls. Unplug the headlight and truck bed light switches. Lay the trim panel aside. On the side of the control module gently slide a flat screwdriver in the slot until the clip disengages. (Look at the new one to see which way the clips face.) Repeat on other side. Disconnect wire harness plugs. Assembly for the new module is the reverse of the above. Be careful to use gentle pressure on the dash trim or it may break.

Posted on Nov 13, 2009

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Posted on Jan 02, 2017

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SOURCE: 2004 gmc 1500 sierra heater control stuck on

Defrost is the default position. Is the control a autyomatic temperture control unit? ( you set the temp and select automatic) if it is the system is completely electronic. You push the buttons and the control still says defrost or can you select something else and the control shows it but it just keeps coming out the defrost? If the control changes and the air comes out the defrost anyway and the cheack engine light isn't on, then the problem can be blown fuses or an air door actoater not working. Does the dash emit a clicking sound? if it does with the covers off the bottom of the dash reach around touching the different pieces till you touch the idem that is clicking. this is an acutor motor, or blend door motor. they have gears in them that wear out and break the motors aren't repairable and you just replace the ofending motor. the door that is moves can be stuck. and may have to be freed up with blaster, WD40, or other rust buster till it moves easy. maybe after getting the door to move smoothly you can get the old motor to move the door wiithout having to install a new one.

Posted on Jan 06, 2010

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Here is a simple process that will walk you through a few steps that will pinpoint the overheating problem on your
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Get more great money saving tips and tricks about your vehicle from: twitter.com/acoates23234

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