Relays checked, battery checked, fuses checked, new alternator, new compressor - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

rmaringa · 01-15-2026, 06:39 PM

New compressor and new alternator. Relays and battery and fuses checked. New blower motor resistor. New condenser. I checked all my fuses with a multimeter and my relays with an automotive relay tester.

Compressor still won't come on.

40amp fuse just causes air to blow. I unplug it and it stops. I don't feel any coldness on the touch of the HVAC pipes under the hood.

I can't activate my AC switch on my Scan Tool either.

Now also in addition to my HVAC, my 2 radiator fans won't turn on either.

Why? How do I fix?

xstuntman · 01-15-2026, 08:02 PM

BCM?

rmaringa · 01-15-2026, 08:21 PM

Quote:

Originally Posted by xstuntman

BCM?

Do you know if the radiator fans go thru the BCM or HVAC module?

xstuntman · 01-16-2026, 10:35 AM

Not sure on the radiator fans.
The BCM does on the HVAC.
Two separate problems?

This might be the one time it would pay to let the mechanics look at instead of throwing more money at it.

1JEWLDSSRS · 01-16-2026, 01:16 PM

Quote:

Originally Posted by xstuntman

Not sure on the radiator fans.
The BCM does on the HVAC.
Two separate problems?

This might be the one time it would pay to let the mechanics look at instead of throwing more money at it.

^^^ This. Their scan tools can go deeper than most "outside" scanners to see whats up. Good luck.

01-15-2026, 06:39 PM	#1
rmaringa Drives: 2012 Black Camaro Join Date: Apr 2013 Location: Florida Posts: 31	Relays checked, battery checked, fuses checked, new alternator, new compressor New compressor and new alternator. Relays and battery and fuses checked. New blower motor resistor. New condenser. I checked all my fuses with a multimeter and my relays with an automotive relay tester. Compressor still won't come on. 40amp fuse just causes air to blow. I unplug it and it stops. I don't feel any coldness on the touch of the HVAC pipes under the hood. I can't activate my AC switch on my Scan Tool either. Now also in addition to my HVAC, my 2 radiator fans won't turn on either. Why? How do I fix?

01-15-2026, 08:02 PM	#2
xstuntman Drives: 2012 Victory Red LFX Join Date: Dec 2012 Location: west central Texas Posts: 1,367	BCM? __________________ '18 SS wheels, colored matched Heritage grille, actual driving lights, ZL1 strut tower brace, GM Performance billet aluminum fuel door, victory red rotors and calipers, 1/4 window American flags, splash guards, AEM dry panel air filter, Hot Wheels steering wheel and seat covers, Hot Wheels exterior emblems.

01-16-2026, 10:35 AM	#4
xstuntman Drives: 2012 Victory Red LFX Join Date: Dec 2012 Location: west central Texas Posts: 1,367	Not sure on the radiator fans. The BCM does on the HVAC. Two separate problems? This might be the one time it would pay to let the mechanics look at instead of throwing more money at it. __________________ '18 SS wheels, colored matched Heritage grille, actual driving lights, ZL1 strut tower brace, GM Performance billet aluminum fuel door, victory red rotors and calipers, 1/4 window American flags, splash guards, AEM dry panel air filter, Hot Wheels steering wheel and seat covers, Hot Wheels exterior emblems.