Blower Motor, Dead, Replaced Motor, Still Dead

[Rednex-Chevy]

Hi guys..it's -20 here tonight, heater went in 90 k1500..replaced the blower motor with a new one in the yard, dressed in a snow suit...turned heater on , still nothing, on any speed..so now I'm out the cost of the motor, and still no heat.

Pulled power line off blower motor, checked it with test light, no power going to that lead. What do I want to check next, I'm gonna hook the B_stard up direct with a stupid switch if it comes to that...is it just 12 volt ?

I'm going in the garage at a buddies with it tomorrow, any help would be appreciated...switch ? resistors (no because it doesn't work on any speed)? Relay ? ...... ...

Thanks in advance for any help..PS the article to remove the motor was great, thanks for all of the heads ups.

[dave89iroc]

fuse

[Rednex-Chevy]

Hello Dave

I checked the fuse, it was not that, I'm going to check other things in about 1 hour. I have a truck manual, I think there is something in there about how to check it.

Any other Ideas ? Is there something else that it could be ?

[Rednex-Chevy]

Ok, well I fixed the problem.

NOTE: For those of you who have older trucks, if the blower motor gets old, it can draw more amperage than it should, which could melt wires or connectors as it did in my case.

Connector C209, which is the connector which goes to power the connector at the switch was BURNT to a crisp almost. The Brown is your power wire, and that was the one that was toast.

So guys, keep this in mind if your Blower stops working, check your wiring.

In the GM Manual, they said to unplugg connector on switch, and to check with a test light if you have power on the Brown wire, I had none, so the manual said to check and find where the break was in the wire, in my case it was the connector which melted. Put wires back together with a few connectors and voila, good head and more volume now since I changed the blower motor to a new one. Truck is 17 years old...these things are bound to happen.

[Bob T]

Ok, well I fixed the problem.

NOTE: For those of you who have older trucks, if the blower motor gets old, it can draw more amperage than it should, which could melt wires or connectors as it did in my case.

Connector C209, which is the connector which goes to power the connector at the switch was BURNT to a crisp almost. The Brown is your power wire, and that was the one that was toast.

So guys, keep this in mind if your Blower stops working, check your wiring.

In the GM Manual, they said to unplugg connector on switch, and to check with a test light if you have power on the Brown wire, I had none, so the manual said to check and find where the break was in the wire, in my case it was the connector which melted. Put wires back together with a few connectors and voila, good head and more volume now since I changed the blower motor to a new one. Truck is 17 years old...these things are bound to happen.

That is called "diagnosing the problem and fixing it."
Glad it works now. That is COLD.

[oldred95]

It happens. The 95-00 OBS's are even worse about it burning the wiring up at the switch. My blower motor quit out of nowhere and I had no power to the motor so I went ahead and got a new motor and switch knowing the motor had been making some noise and not putting out enough air anyway, and got a new switch because everyone told me about it burning up the contacts there so I got one just incase. Replace both and the switch contacts were fine, worked a while and then quit again. Jiggled wiring and I believe it was the ground wire in the power and ground harness for the resistor was all burnt and melted into the connector. Replaced the connector and haven't had any problems since.