Question about 2001 GMC Sierra Crew Cab

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I need to know how much freon I need to refill my air conditioner

I have a 2001 GMC Sierra and want to refill the freon.

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  • Anonymous Mar 16, 2014

    refill freon on gmc envoy how many pounds


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Probably 2 to 3 cans. It won't accept more than it needs. Just get as much as you can in it.

Posted on Jul 01, 2009

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Posted on Jan 02, 2017

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On my 2004 gmc sierra 1500 the compressor cycles on and off. i tried to add more freon but it would not take the freon so i changed the low pressure switch but still doing the same thing. could the orfice...

When the compressor kicks on, is the air from the vents blowing cold? If the air isn't blowing cold, then your problem could be that you may have water in the system. I had a '93 Chevy Z71 that wouldn't blow cold and thats what my problem was. System needs to be evacuated and refilled. Good luck bro.

Aug 14, 2012 | 2004 GMC Sierra

1 Answer

Need to put freon in ac not sure which valve is the low side one. The one standing up right or the one laying sideways. it is a 1998 gmc 3/4ton sierra pickup 350 auto trans

It is the LARGER hose, and the actual fitting is smaller-your fill hose that comes with your refill kit will only fit the suction (low side) port, so you can't do it incorrectly.

Jun 29, 2011 | 1998 GMC Sierra

1 Answer

When at a stop light my 2001 gmc 2500hd A/C starts blowing warm

Your freon level is low and needs to be recharged. To have this done properly, a total evacuation of the A/C system should occur so that the seals can be replaced. The seals are leaking and that is where your freon is going. Once the seals are replaced, the system is then recharged with the proper amount of freon. Hope this helps.

Mar 29, 2011 | 2001 GMC Sierra 2500HD

1 Answer

How do you change the transmission filter and refill fluid in a 2000 gmc sierra pickup?

Remove the trans pan,change the filter,clean pan and magnet,install new gasket and refill with correct fluid. (Dex/Merc)

Nov 11, 2010 | 2000 GMC Sierra

1 Answer

Oily coating inside of windshield

Coolant will be orange or green in color
Freon evaporates although if an AC leak a slick oil can appear

Jul 31, 2010 | 1994 GMC Sierra

1 Answer

Does the AC use Freon in the 2002 GMC Sierra

Yes it take 134a freon, if system is empty for a full recharge take's 1.76lbs of freon.

Jun 04, 2010 | 2002 GMC Sierra

1 Answer

As i drive my auto AC will stop blowing cooled air. after a while it starts again

Low on A/C coolant, also known as R135 freon. A can can usually purchased at an automotive parts supplier, and refilled by you. Usually has instructions on what to do. But is you Google how to do it you should be able to get an answer.

Aug 21, 2009 | 2005 GMC Sierra 1500 Hybrid

1 Answer

On and off cooling from a/c can anybody help

You are low on freon. You may have a small leak in system. Go to auto parts store and by a refill with seal in it. It comes with gage attacked that tells you when system is full. This should solve your problem unless compressor is failing. But this sounds like low freon.

Jun 18, 2009 | 1999 GMC Sierra

1 Answer

No cold A/C

the system isnot full. dit you evecuet the a/c systme went replace the valve if yes the system is low.

Apr 04, 2009 | 2000 GMC Sierra

1 Answer


Chances are you have a leak in you AC system and lost the freon.

Mar 21, 2009 | 2001 GMC Sierra 1500HD

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