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Discussion Starter · #1 ·
I have '01 Chevy Silverado with 4.7 v8. If I turn the temp knob to hot and use the heat, then a bit later go back to AC, the AC only blows hot. Very hot. And it's impossible to get it to cool down at all. Letting it sit for a few hours has cured the problem a few times. Then the AC is back to normal. This keeps happening! Any ideas?
 

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probably a sticking blend door motor


and u have a 4.8...its not a toyota
 

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Discussion Starter · #4 ·
Anyone know where I can find instructions for how to get at the blend doors and determine which motor to replace? My aftermarket manual doesn't mention this at all.
 

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do all the vents do that or just half of them?
 

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Discussion Starter · #6 ·
good question. I think all but I'm not positive. I guess I would have to replicate it again to be sure. Would that tell you which one is faulty?
 

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if the blend door is going out, it's not overly complicated to change, but it is a gigantic pain in the ass. at least for the passenger side. the drivers side is, well, still working, but what i've read, much easier to replace :crazy:
 
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