Question about 1995 GMC Sierra

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Air only blows about 50 %

I have a 1995 gmc 1500 z71 the air only blows about 50% when turned to high it completly shuts off any ideas

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The fan control switch is probably bad and needs to be replaced. its something u can do if ur a DIY else see ur auto electrician or mechanic

Posted on Oct 03, 2009

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Posted on Jan 02, 2017

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Dec 26, 2015 | 2004 Chevrolet Chevrolet Silverado 1500...

1 Answer

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

When you change from heat to air , it still blowes hot air like it is not switching to air conditing, the compressure is running and lines get cold, but no cold air. thanks


If the orifice filter is clogged, this will happen, a better check can

be done with an ac manifold gauge set, the low side reads the

evaporator pressure and the high side reads the discharge

pressure. I had the same problem while checking the ac on a

2000 gmc 1500 z71 4x4. other things that could cause this are

to much oil in the ac compressor or not enough freon in the

system. an overcharged system , the best way to check it is with

a gauge that way you can tell if you have the right amount of freon

and oil in the system. plus the gauge set will let you know the

extent of your problem. good luck!

Apr 06, 2011 | 1999 Chevrolet Silverado 1500

1 Answer

I have a 2011 Sierra 1500 X-Cab 5.3L Z71 after


May be a problem with the mass air flow (MAF) sensor - I would check the readings from it to make sure it is working properly. It is very sensitive to fouling which can cause this problem.

Jul 03, 2017 | 2011 GMC Sierra 1500

1 Answer

Speedometer loser power for a second


the dash clusters in the 03 -07 chevy 1500-6500 trucks have issues with their motors that are in the cluster. they work then don't, stick, jam, reset, etc. GM has a recall on these if your truck is privately owned and under 125000 KMs, Just contact the dealer to start and ask if you truck is included in this recall. If it isn't then you might want to find someone to repair it. we repair these unit often. good luck to you

Oct 09, 2009 | 2004 GMC Sierra

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My 2000 gmc just shut off while driving


check fuel pump relay, is fuel present at motor 

Sep 15, 2009 | 2000 GMC New Sierra 1500

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Heat will stay on high until turn engine off and back on


check dial switch, check valve that lets water run through heater core

Aug 23, 2009 | 2000 GMC New Sierra 1500

1 Answer

Blower fan not working correctly


I had the same problem. There is a filter down under the passenger side of the dash that clogs up and stops the air from blowing out any of the vents. I removed the filter completely and now it blows like new.

Jan 09, 2009 | 2000 GMC New Sierra 1500

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