Dead Blower Motor: GMC Safari AC Control Fix Guide

Had a similar issue on my 2005 GMC Envoy. The HVAC system completely failed, with no air flow from any vents. The blower motor was indeed the culprit, but the problem started with the fan speed controller. First check: Turn ignition to ON position and listen near the passenger footwell. A properly working blower should make a slight humming noise when switching between speeds. No sound likely means either the motor or controller has failed. In my case, the air circulation system showed similar symptoms, complete failure with an error code. The repair involved replacing both the blower motor and the controller unit since they had suffered electrical damage. This was a serious repair as the HVAC system is essential for both cabin comfort and windshield defrosting. Key inspection points before garage visit: Check fuses related to the blower circuit, Listen for any grinding noises when turning on the system, Test all fan speeds for response, Look for signs of water damage near the blower motor housing This is typically a 4-5 hour repair job because accessing the blower motor requires partial dashboard removal. Parts are readily available for these models, but proper diagnosis is crucial before replacement. Given your vans mileage, its likely time for a blower motor replacement, as these components typically start failing around the 120000 km mark in GMC vehicles.

Thanks for sharing your experience with the Envoy. My Safari showed those exact same symptoms too. After taking your advice, I found no humming sound at all from the cabin fan area, suggesting a complete failure. My mechanic ended up replacing both the blower motor and controller, like in your case. The heater fan works perfectly now, and the climate control error disappeared. Just wondering, do you remember roughly how much you paid for the complete fix? Also, have you had any other HVAC related issues since the repair?

Thanks for the update about your Safari. Glad to hear the heater fan is working properly again after replacing the blower motor and controller. For my Envoy repair, I paid 365 Euro total, which included both parts and labor for the complete fix. Since getting the new blower motor installed, the air conditioning and fan system have worked flawlessly. No more error codes or air circulation problems. The air flow is actually much stronger than before, which makes sense since the old motor was probably deteriorating gradually before it completely failed. One tip: to help extend the life of your new blower motor, try running the fan at various speeds regularly. Keeping it only on the lowest or highest setting can strain the fan speed controller over time. If the repair cost on your Safari was similar, it was money well spent. These components are essential for proper cabin ventilation and safety, especially when you need the defroster in poor weather conditions.

Thanks everyone for the helpful advice. Finally got my Safari back from the shop yesterday. Total bill came to 430 Euro which included the blower motor, controller unit, and labor. More than I wanted to spend, but at least the electrical wiring didnt need replacement like I initially feared. The mechanic showed me the old parts, the heater fan motor was completely burnt out. He mentioned finding some debris around the housing that probably contributed to the failure. Whole job took about 5 hours since they had to remove part of the dash to access the HVAC system. Now the cabin fan works better than ever. Air flow is strong and consistent at all speeds, and that annoying error code is gone. Definitely worth fixing rather than trying to live without proper climate control. Going to follow the advice about varying the fan speeds regularly to help this new motor last longer.