Sign up for FREE! Become a GM-Trucks.com Member Today!
In 20 seconds you can become part of the worlds largest and oldest community discussing General Motors, Chevrolet and GMC branded pickups, crossovers, and SUVs. From buying research to owner support, join 1.5 MILLION GM Truck Enthusiasts every month who use GM-Trucks.com as a daily part of their ownership experience.
I have a 2006 GMC Sierra 1500 4x4. A/c has been out for over 2 years had a bad compressor never got around to fixing it. Today I replaced the compressor, condenser, accumulator, orifice tube, and flushed all lines. Took it up to my buddy at the dealership and we charged it up. Put it under vacuum for a bit and no leaks. Drove home about 12 miles no problems blew ice cold. Left to go to the store about 2 hours later started it up the ac button was on but clutch wasn’t engaged and ac blowing warm. Turned the button off then back on clutch engaged and blew ice cold. About 10-15 seconds clutch disengages blows hot cycle the button again blows cold again. Every 10 seconds or so it blows hot and I have to cycle the ac button on the dash again get cold air.
I know the compressor clutch should cycle on and off that’s normal but I don’t think it should be that frequent and you shouldn’t feel that significant of a temperature change right? And when it cycles off it doesn’t come back on unless you cycle the button.
I’m thinking a issue with the low pressure switch on the accumulator but any advice?
1997 5.7 Vortec intermittent slow start revisited.
I have a 1997 Express with a 5.7 Vortec and the CSFI system. It has 130k miles.
It is hard to start after sitting. If I pulse each of the fuel injectors with an injector tester then it starts right up. Problem description is mostly in next post. The test procedure that makes it start is in the third post.
By Junior Truck
So I have a 2106 3.6 Colorado. She's been flawless for 65,000 miles. Now I have two issues that I hope are related. With the absence of codes I'm looking for anyone who may have had a similar experience. After refueling when the tank is real low (reserve light on) she cold cranks for several ignition switch cycles before starting. This ECM has not thrown a code to date. No CEL. This only happens after refueling when the tank was really low. Kinda scary 500 miles from home. Maybe a stuck evap solenoid? About the same time this started, I started to get a low idle stumble after running at interstate speed. The low idle stumble is also intermittent. Again no codes. Was just bragging to a Ford guy about how reliable my Colorado and my Duramax have been, then this! Anyone have anything on this?
Recently Browsing 0 members
No registered users viewing this page.
Who's Online 55 Members, 0 Anonymous, 2,818 Guests (See full list)
- f8l vnm
- Paul 74
- [email protected]
- Kyle Genesse
- MTU Alum
- nht mike
- Dan Pemberton
- 70 W-30