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AC and Heat work on settings 1-4 but not 5?

jshep105

jshep105

New member
Hello I drive a 2002 Grand Prix gtp and it blows hot on settings 1 through 4 but if I set it to 5 nothing happens (like it's set to OFF). Same thing happens with the AC.
 


Blower motor Resistor under the dash most likely. About $75 when I replaced mine.

Sent from my VS920 4G using Tapatalk
 
02NavyBlue said:
Are you sure? ^ Usually it's the resistor if it blows on 5 only.
Click to expand...
This.
Basically your Q is the opposite of anything ive ever encountered. However, dont rule out the resister and ign switch.
Any other funny things going on? Dic getting dim, clicking relays in dash, heated seats setting off relays?
 
Only reason I say is because we had a MC come into my work one day with this issue, and out of curiosity my manager metered everything out (we aren't supposed to work on cars necessarily), and tried a new blower motor too, ended up being the resistor. Opposite of how it normally fails, yes, but it is possible.

Sent from a corn field in IL.
 


Right, you still had 5 though. It's when you don't have 5, but have lower speeds is where I was starting to wonder.
 
blackflag said:
This.
Basically your Q is the opposite of anything ive ever encountered. However, dont rule out the resister and ign switch.
Any other funny things going on? Dic getting dim, clicking relays in dash, heated seats setting off relays?
Click to expand...

Nothing else is wrong or broken besides the radio display light which has been broken for a while now.
 
Sure, unless you have a way of testing it first, that's always a good idea to save money so you don't buy unneeded parts.
 


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