1993 GMC G3500 Vandura School Bus edition issues

[vintshave]

Hi,

 

A few major issues on my new (to me) 1993 G3500 School Bus. This is part of a longer post elsewhere, but I didn't want to trouble a tech with small stuff:

 

• When I flip on the fan - NADA. Nothing. No blowing. No heat, no A/C (HELP! It's getting cold). NOTE: Since it's a school bus, there is a heat/A/C unit in the rear. That doesn't go on either.
• Truck seems to barely turn over - but it starts every time and the engine runs fine. But it acts almost like it's going to throw in the towel. Is this normal for this model? A sign of a bad battery? Something else?

 

What should I do now?

-----------------------------

• When you get a truck like I did, I assume that you should change the oil ASAP, replace the air and oil filter and top up the fluids. Anything else that would be a good idea to do/check?

 

Thanks in advance!

 

John

[vintshave]

Update: fuses are not blown

[vintshave]

Update on the blower. Hit it with a wrench a few times. Started up. Blows powerfully on a/c, but barely on heat. Any ideas would be appreciated.