Thread: Heater stopped blowing

Originally Posted by monsterjam5000

Cam anyone post me a link on how to replace the blower motor and resestor. My hvac hi fuse is fine so I thought it must be the blower or resitor then but can not get this thing out and don't even see the resistor

Here is the link for the R&R of the resistor replacement:ClubGP: Anytime you replace the BM and you have the original GM resistor it's a good idea to replace it at the same time as these have a high failure rate. The new resistor you buy at the parts store is an upgraded part and should last the life of the car....

Originally Posted by Madness

Nice link!!

May have saved me a few choice words when I did mine the first time. Make sure you install the water deflector or it may go out again in a few years.

http://www.grandprixforums.net/f73/w...-fix-6961.html

Right after I replaced my BM resistor I ran my car through a car wash at SA in January in MN and the next morning I cranked it up and got nothing but smoke coming through the vents. Water from the car wash leaked through and took out the BM and resistor. Lesson learned....

Originally Posted by Madness

I use a Northfield, MN drive through car wash in winter and would get soap/water dripping on any passengers feet until I installed the deflector.

MN winters are great aren't they?

Yep, I wish it was winter all year round.....

If you have climate control, the resistor pack is a $125 module. You have to be careful hard-wiring the motor as I have had smoking wires trying this. I have had more blower motor issues with my car than I all other cars I have ever owned combined! The first blower motor went out because of water getting into it and rusting out the inside. So I replaced it and thought everything was fine. It quit working again the next summer. I used a multimeter to diagnose it and found the resistor module was gone. I opened it up and it was all rusted out too. ? Thats when I messed around with hard wiring it to a plain on/off switch. So I ended up throwing in a new resistor module last winter and this summer, 3 days after getting the a/c recharged, the blower started acting wierd and quit working altogether. GRRR! I pulled the resistor pack out again and water poured out of it. Well, before I write a novel, heres a couple pics of what was causing all the trouble. A plugged drain for the core backing up water into all the electronics.