Sup y'all! Bought my first Chevy ever with it being a '95 C1500 Suburban with about 210K miles! Drives smooth, 5.7 TBI, absolutely love this truck. However I'd like to be more comfortable in it for longer trips that involve more than one stop LOL
So here are the symptoms:
1) AC blows cold for several minutes after driving from a cold start.
2) AC turns hot like if the blend door was switched to heat.
3) Surging blower velocity, sounds full blast then tones down then full blast, and my legs and feet are being blown by the lower vents too, even with the AC fan off and the direction set to upper vents.
4) AC will remain hot throughout the rest of the ride until the truck is shut off for a while and start from cold.
5) Recirculate button always illuminated when engaged/disengaged, AC button always stays unilluminated.
Also I get no cold in the rear vents but I'm guessing that's a separate system entirely so no big deal, it's just usually me usually in the truck.
Number 3 sounds like a blower resistor to me but since I'm getting both legs and feet and I'm losing AC after driving a bit, could it be there is a lot of resistance in the control unit itself sending weird signals to the pressure switches, blower resistor? Pressure switch connector has already been replaced with a pigtail. Could bad grounds itself be causing everything else? My radio works just fine, the dash lights and driver/pass overhead lights work fine too.
Thanks for any help!
So here are the symptoms:
1) AC blows cold for several minutes after driving from a cold start.
2) AC turns hot like if the blend door was switched to heat.
3) Surging blower velocity, sounds full blast then tones down then full blast, and my legs and feet are being blown by the lower vents too, even with the AC fan off and the direction set to upper vents.
4) AC will remain hot throughout the rest of the ride until the truck is shut off for a while and start from cold.
5) Recirculate button always illuminated when engaged/disengaged, AC button always stays unilluminated.
Also I get no cold in the rear vents but I'm guessing that's a separate system entirely so no big deal, it's just usually me usually in the truck.
Number 3 sounds like a blower resistor to me but since I'm getting both legs and feet and I'm losing AC after driving a bit, could it be there is a lot of resistance in the control unit itself sending weird signals to the pressure switches, blower resistor? Pressure switch connector has already been replaced with a pigtail. Could bad grounds itself be causing everything else? My radio works just fine, the dash lights and driver/pass overhead lights work fine too.
Thanks for any help!