[2dogs2]

Got in my 89 Blazer this morning to plow and the fan would not work in any position. Tough plowing when you have to keep wiping the window with a rag. Talk to one of my friends who suggested tapping the motor gently with a rubber hammer. And it started working.

1. Is there someplace to oil this? or can a tiny hole be drilled in somewhere to put a couple
drops of oil in ?

 

[DJ Contracting]

Got in my 89 Blazer this morning to plow and the fan would not work in any position. Tough plowing when you have to keep wiping the window with a rag. Talk to one of my friends who suggested tapping the motor gently with a rubber hammer. And it started working.

1. Is there someplace to oil this? or can a tiny hole be drilled in somewhere to put a couple
drops of oil in ?

If i'm not mistaken your blower mtr. is located in the engine compartment you should be able to drill a hole in the exterior of the blower mtr. where it looks like a small nipple sticking out anyway put a piece of rubber vacuum hose over your drill bit and only leave about 1/8 of the drill bit tip showing drill the hole and install a grease zert and lube it up, i would also check your heater blower resister which is located on the same housing that the blower is mounted, good luck. Joe

 

[MickiRig1]

Use a test light or a VOM and see if you have power to the blower. Most times you will have some speeds of the fan if the switch is bad. It may have a broken ground wire or the blower motor is toast.

 

[Kennedy81]

I have the same problem with my '88 K5. From time to time it will just stop working...

 

[MickiRig1]

I had a Monti Carlo that had a junction plug that had the blower wires in it get melted. They ran it close to the exhaust manifold. The wire tie broke letting it get close to the hot exhaust. It just effected the high setting.

 

[wagonman76]

Sounds like the brushes are getting worn out. They are a sealed unit. You could try drilling a hole and oiling it. But mine are like $12 or so at Autozone, yours is probably the same thing. Id just put a new one in.