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Old 11-19-2014, 02:56 PM   #3
c10noob
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Join Date: Oct 2014
Location: oakley, ca
Posts: 23
Re: How do I diagnose my heater?

Quote:
Originally Posted by dmack91 View Post
Lay down so you can see under the dash at the heater control area. Move the lever and make sure the lever moves the cable at both ends (Lever and plenum). That will tell you if the controls are hooked up and not broken.
Thanks for the reply, I'll check it out tonight
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