Cabin Fan - ZR-1 Net Registry Forums

Jim Nolan · 01-15-2016

The cabin fan will not shutoff, it runs constant at 1oo%. No setting will reduce or shutoff the fan. The bad part is I had to disconnect the battery to shut it off. After the engine shut off and the key removed it still ran. I checked the fuse and it was good. Before I start tearing things apart I need some input on any thing simular.

secondchance · 01-15-2016

I had a similar situation resulting in dead battery in 3 days. My fan was running, even with the car shut off, at such a low speed I could barely hear it.
Replacing the fan control module on top of AC evaporator housing on the passenger side under hood was the fix.
Quick check would be pull the plug (there are two plugs) closer to the bulkhead and see if the fan turns off. Be careful, this plug is always hot (electrically), even with the ignition in off position.

Jim Nolan · 01-16-2016

I pulled the plug on the blower module and the fan quit. Was a new module available at auto parts store or GM only?

Jim

Mystic ZR-1 · 01-16-2016

check with Steve (efnfast) sounds like the problem he had. not sure how he fixed it... we had to pull the fuse every time we shut the car off on the way back to New England from the Gathering last May

secondchance · 01-16-2016

Quote:

Originally Posted by Jim Nolan

I pulled the plug on the blower module and the fan quit. Was a new module available at auto parts store or GM only?

Jim

Rock auto carries this module from multiple sources.

Jim Nolan · 01-22-2016

Well I ordered the module from Rock Auto and I sent it back today. It was the only one they show for '92 ZR-1 and it won't fit in the evap box. It's too long and hits inside the the box not allowing it to be bolted in and sealed, and I had to pay to have the part shipped, both ways. Any other suggestions on suppliers?

Jim

secondchance · 01-22-2016

Quote:

Originally Posted by Jim Nolan

Well I ordered the module from Rock Auto and I sent it back today. It was the only one they show for '92 ZR-1 and it won't fit in the evap box. It's too long and hits inside the the box not allowing it to be bolted in and sealed, and I had to pay to have the part shipped, both ways. Any other suggestions on suppliers?

Jim

Which one did you order from the Rockauto? AC Delco?
Another option is to find one on ebay, compare visually with your old one. If not functioning when installed, at least you'll get a refund.

efnfast · 01-16-2016

Doug, I never fixed it, and it never reoccured.

aafc · 01-24-2016

Hi Jim,
Call coastal corvettes @ 321-480- 0228 the owner's name is John. He is located at
3435 hwy 1 in Mins. he might have a used part.
John
1990 white/black #2546

secondchance · 01-24-2016

This one says for 90 to 92 model year. AC Delco 15-71642 (12368387, 47514) and 93.9 mm long.
http://www.ebay.com/itm/HVAC-Blower-...ZVm-TI&vxp=mtr

Cross check part number and check the measurement. Good luck!

01-15-2016	#1
Jim Nolan Join Date: Jan 2007 Location: Florida Posts: 240	Cabin Fan The cabin fan will not shutoff, it runs constant at 1oo%. No setting will reduce or shutoff the fan. The bad part is I had to disconnect the battery to shut it off. After the engine shut off and the key removed it still ran. I checked the fuse and it was good. Before I start tearing things apart I need some input on any thing simular.

01-16-2016	#3
Jim Nolan Join Date: Jan 2007 Location: Florida Posts: 240	Re: Cabin Fan I pulled the plug on the blower module and the fan quit. Was a new module available at auto parts store or GM only? Jim

01-16-2016	#4
Mystic ZR-1 Join Date: Jan 2010 Location: Mystic CT Posts: 2,631	Re: Cabin Fan check with Steve (efnfast) sounds like the problem he had. not sure how he fixed it... we had to pull the fuse every time we shut the car off on the way back to New England from the Gathering last May

01-22-2016	#6
Jim Nolan Join Date: Jan 2007 Location: Florida Posts: 240	Re: Cabin Fan Well I ordered the module from Rock Auto and I sent it back today. It was the only one they show for '92 ZR-1 and it won't fit in the evap box. It's too long and hits inside the the box not allowing it to be bolted in and sealed, and I had to pay to have the part shipped, both ways. Any other suggestions on suppliers? Jim

01-16-2016	#8
efnfast Join Date: Nov 2011 Location: Dunbarton NH Posts: 7,580	Re: Cabin Fan Doug, I never fixed it, and it never reoccured.

01-15-2016	#2
secondchance Join Date: Aug 2006 Location: McLean, VA Posts: 3,731	Re: Cabin Fan I had a similar situation resulting in dead battery in 3 days. My fan was running, even with the car shut off, at such a low speed I could barely hear it. Replacing the fan control module on top of AC evaporator housing on the passenger side under hood was the fix. Quick check would be pull the plug (there are two plugs) closer to the bulkhead and see if the fan turns off. Be careful, this plug is always hot (electrically), even with the ignition in off position. Last edited by secondchance; 01-15-2016 at 10:44 PM.

01-24-2016	#9
aafc Join Date: Feb 2010 Location: Summerfield, FL Posts: 434	Re: Cabin Fan Hi Jim, Call coastal corvettes @ 321-480- 0228 the owner's name is John. He is located at 3435 hwy 1 in Mins. he might have a used part. John 1990 white/black #2546

01-24-2016	#10
secondchance Join Date: Aug 2006 Location: McLean, VA Posts: 3,731	Re: Cabin Fan This one says for 90 to 92 model year. AC Delco 15-71642 (12368387, 47514) and 93.9 mm long. http://www.ebay.com/itm/HVAC-Blower-...ZVm-TI&vxp=mtr Cross check part number and check the measurement. Good luck! Last edited by secondchance; 01-24-2016 at 07:43 PM.