91.5 heater motor?! - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 3 (permalink) Old 10-10-2009, 01:33 PM Thread Starter
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91.5 heater motor?!

I recently bought a 91.5 cummins and the heater blower doesnt work I replaced the switch and thats not it.. maybe the motor itself. the fuse is fine so thats not it either also is there a link to a "how to" change this? thanx

2004.5 GMCcc, sb, 4" straight pipe from turbo back, lly dmax, afe stage 1, 315 75 16 big o a/t, egr blocked ,billstiens all around,2 dvd's, nav, slt package,
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post #2 of 3 (permalink) Old 10-11-2009, 03:37 AM
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Up behind the glove box is a resister setup mounted into the cowl area. This is used to controll fan speeds. Check and see if you have power coming and going out of it.

93 W350 w/duals, fuel pin turned, 6X.018" injectors, 4" exhaust, 3" air intake horn, HX40/16, G56 /SBC Con-OFE, 307's axles' 2" skyjacker lift, B&W flatbed
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post #3 of 3 (permalink) Old 11-26-2009, 04:00 PM
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My blower motor glitch was the two-conductor connector nearest the motor, under the hood, passengers side firewall. My blower has a soft plastic cover which concealed the connector, but when I hot-wired it it fired right up.
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