Digital Heater Motor blower Resister

[Trayway]

Originally Posted by Keller

Why not share the P/N so that we may try to help? Might be faster than digging through parts books if you have the number already.

part#25500218 this the # I got from GM It has auto air

[Trayway]

Part # 25500218 this is the # I got from GM They say that its a discontinued part. It has Auto AC

[Keller]

Casper's Electronics has the solution, as has been posted. It is improved from the OEM unit so as not to fail again.

http://www.casperselectronics.com/st...oducts_id=1338

http://installationinstructions.com/107146.pdf

Going to "stick" this thread.

[turbodave38]

Before you spend the big bucks on that module, make sure it's actually the problem.

I just went through this with mine. I also thought that module went bad because when it does, not only does the blower quit but the A/C compressor also wont work.

I thought it was fried.

After some troubleshooting, I determined that there was no 12v getting to the module, via the big fat red wire. It's supposed to be constant hot.
Check that. If the 12v is missing or low or flaky, follow that wire, it runs over by the fender and comes out of a multi pin UNPROTECTED connector that just happens to be sitting in the worst possible place. Right where water drains down between the hood and fender and getting it wet. Causing corrosion.

I had to run a new hot wire around that connector to supply the 12v to the module.

Lesson learned. Troubleshoot voltages before spending on something that may not be needed.

[jlat]

hello; Wow that resistor is going for some bucks and with them corrosion is a problem. In my 94 Astro all the conn. where rusted togeather so I had to break them. I got it to work agian with out buying a new one as some of them go for $100 and I thought that was alot. Now in the van out of 4 B/M setting I have 2 and 4 and that good enough for now.
IBBY