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I don’t know if I’m posting this in the right place but any help with post/truck is greatly appreciated. This is my first diesel truck.
I have an ‘01 Chevrolet Silverado 2500HD extended cab long bed Duramax/Allison, had for about a year and a half. I believe it’s the LB7.
Upgrades/Mods
Mishimoto radiator, Mishimoto trans cooler, ram cold air intake, Brake controller-bags in the rear w onboard air compressor
I’ve done maintenance and small fixes as I’ve owned it, wheel hubs, balls joints, tie rods, shift selector, rear main seal, fuel filter/upgrade, every fluid etc.
Since I’ve owned the truck the A/C hasn’t worked. I’ve got the time and money now so I thought I would try and fix it.
The pump never kicked on when the a/c or defrost buttons were on. I took it to a shop they tested my pump,fuses,relays,and the system itself. Everything is charged and works, but only when they give the pump direct power manually. I replaced my fan/temperature control knobs etc in the cab. And now I don’t know what to do. One other weird thing is that the fan only blows inside the cab when it is set to 4 or 5. Does not blow at all when on 1,2,or 3. I expected that to change with the new fan/temp control unit but it did not. The controls all seem to work in the sense that the a/c and defrost buttons light up when pushed, the air/warm air will blow at the feet section-dash section, and defrost section when you switch the knob to the different settings. Only 1,2, and 3 settings don’t work on the fan.
My next idea was to either trace and replace the wiring from the a/c compressor to the fuse box or replace the whole fuse box or replace my blower motor but I’m hoping it’s something stupid easy I’ve overlooked.
Thank you in advance!
Me and the mrs towed a 37’ 2016 travel trailer over 3,000 miles and enjoyed every minute of it! This truck may not have a/c but she never left us stranded or in a bad spot.
I have an ‘01 Chevrolet Silverado 2500HD extended cab long bed Duramax/Allison, had for about a year and a half. I believe it’s the LB7.
Upgrades/Mods
Mishimoto radiator, Mishimoto trans cooler, ram cold air intake, Brake controller-bags in the rear w onboard air compressor
I’ve done maintenance and small fixes as I’ve owned it, wheel hubs, balls joints, tie rods, shift selector, rear main seal, fuel filter/upgrade, every fluid etc.
Since I’ve owned the truck the A/C hasn’t worked. I’ve got the time and money now so I thought I would try and fix it.
The pump never kicked on when the a/c or defrost buttons were on. I took it to a shop they tested my pump,fuses,relays,and the system itself. Everything is charged and works, but only when they give the pump direct power manually. I replaced my fan/temperature control knobs etc in the cab. And now I don’t know what to do. One other weird thing is that the fan only blows inside the cab when it is set to 4 or 5. Does not blow at all when on 1,2,or 3. I expected that to change with the new fan/temp control unit but it did not. The controls all seem to work in the sense that the a/c and defrost buttons light up when pushed, the air/warm air will blow at the feet section-dash section, and defrost section when you switch the knob to the different settings. Only 1,2, and 3 settings don’t work on the fan.
My next idea was to either trace and replace the wiring from the a/c compressor to the fuse box or replace the whole fuse box or replace my blower motor but I’m hoping it’s something stupid easy I’ve overlooked.
Thank you in advance!
Me and the mrs towed a 37’ 2016 travel trailer over 3,000 miles and enjoyed every minute of it! This truck may not have a/c but she never left us stranded or in a bad spot.
