2005 chevy 2500hd hvac problem

Asked by BuddySmiles Jul 31, 2018 at 01:52 PM about the 2005 Chevrolet Silverado 2500HD Crew Cab RWD

Question type: Maintenance & Repair

my trucks manual hvac system only blows on 5 but it blows hot air on driver side and cooler air on passenger side, when I set the control to 1,2,3 or 4 my abs light and brake light come on, I've changed the resistor, the hvac cluster itself, the plug that goes to the resistor. my hvac doesn't have rear defrost but the one I got from o'reillys is for with or without rear defrost so I have no idea what else it could be please let me know

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