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Old 04-25-2011, 10:31 AM   #1
JMac11
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Part Numbers??

Ac Switch on the Duct Work, Blower resister and Heater resistor..... Napa is really letting me down lately
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Old 04-25-2011, 10:14 PM   #2
gcburdic
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Re: Part Numbers??

ttt...anyone?
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Old 04-26-2011, 10:01 AM   #3
stich626
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Re: Part Numbers??

lets all guess at the model and year shall we
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Old 04-26-2011, 11:24 AM   #4
JMac11
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Re: Part Numbers??

Sorry.... 1972 K5 350 Engine, w AC

I believe there are 4 electrical components to the system

Blower switch in Control Unit
Compressor Switch that turns on the compressor mounted to diverter
Blower relay- Mounted on back of the ductwork, controls fan speed
Heater Resistor, mounted inside duct work.
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Old 04-26-2011, 02:49 PM   #5
dadsworktruck
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Re: Part Numbers??

are you looking for nos part numbers or just looking for parts, i am sure there are several board vendors who can fix you right up.
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Old 04-26-2011, 07:28 PM   #6
Classic Bowties
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Re: Part Numbers??

Quote:
Originally Posted by JMac11 View Post
Sorry.... 1972 K5 350 Engine, w AC

I believe there are 4 electrical components to the system

Blower switch in Control Unit
Compressor Switch that turns on the compressor mounted to diverter
Blower relay- Mounted on back of the ductwork, controls fan speed
Heater Resistor, mounted inside duct work.
Listed below are the OE GM part numbers for a 72 C/K10-20-30 W/A.C. Mel

Blower Switch / #3857992
Compressor Switch / #3895471
Blower Relay / #1116992
Heater Resistor / #3929055
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Old 04-26-2011, 08:22 PM   #7
70cst
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Re: Part Numbers??

Quote:
Originally Posted by Classic Bowties View Post
Listed below are the OE GM part numbers for a 72 C/K10-20-30 W/A.C. Mel

Blower Switch / #3857992
Compressor Switch / #3895471
Blower Relay / #1116992
Heater Resistor / #3929055
Great info...Thanks
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