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AC light flashes on 1992 GMC Yukon

My AC light flashes on my 1992 GMC Yukon and i have already recharged it and touched the battery cables it works but only for about 5 minutes.

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U have ac problem u can only find with gauges or uur cooling fans are not working when ac is on

Posted on Jul 01, 2009

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Has this vehicle been left to sit for awhile without being started? If so, the battery may be dead and need to be recharged or replaced. But if your engine cranks that is not the case. It might also be that your security system has been activated and locked everything up (but I thing the door lights would work then). If the battery is charged and okay, then suggest you take the battery cables off the battery for a couple of hours and see if the secutiy system will deactivate. Or check your owners manual for resetting the secuity system.

Oct 03, 2011 | 2007 GMC Yukon

2 Answers

1999 GMC Yukon. Rear AC cooling great. Font AC not cooling as well. Replaced orfice syphon tube, vaccumed down and recharged with 2lbs R134a. Checked front temp controller. All checks ok. Front AC still...

If the rear is working well and front is not I would suspect a blend door or actuator issue in the front.Double check and see if you can hear anything moving when you are adjusting temperature from hot to cold.Also check and make sure the air flow moves properly from defrost to vents and floor etc.

Jun 12, 2011 | 1999 GMC Yukon

1 Answer

98 Yukon won't start. There is power but it won't turnover.

R U sure your fuel pump is working? Can U hear it load and unload fuel pressure by
turning the key on and off? If you don't hear the fuel pump check the fuel pump
relay. Swap out the relay. You need to make sure the battery is charged. I
believe if the battery is less than 9 volts it will not start. You need to
check the fuel pressure while cranking. If U have a timing light check each
plug independently to make sure they are firing correctly. U should see a consistent
rhythm of flashing light. No need to point light at anything, just make sure it
is consistent.

Not knowing how much U have check already. Start with the basics. I installed new distributor,
rotor, and spark plus in both my 97 & 97 gmc 5.7L trucks. Five months later
I started to have problems with both about a week apart to a point I couldn't
get it to even start. I had bought the fancy Bosch 4 prong spark plugs. I did
the timing light thing and discovered that the distributor was jumping time due
to fowling inside the cap. I went back to the standard AC Delco products. I my
opinion is the pins in the cap are made with some metal material that corrodes

Jan 19, 2011 | 1997 GMC Yukon

1 Answer

I have a 2001 gmc yukon xl. i went out to start it and the battery was so dead the keyless entry wouldn't work. after jumping it to start, i could hear a hum, midway under the car, and the abs light was...

this noise is the abs trying to sort its self out it will stop in a short drive
find out why the battery went so flat as well,,,,,if you knock a battery out that flat it may not be any good at holding its charge any more,, and the car will take a long time to recharge it,,,if ever? try hooking the battery up to a mains charger,,, you dont need to remove it from the car if its only a small charger of say 5amps or so,,but it will need a fuw hours to fully recharge the battery,, to work out just how long it takes a 40amp battery will take 8 hours at 5 amps to fully recharge it
40amp divid by 5amp = 8hours,

Aug 09, 2010 | 2001 GMC Yukon

1 Answer

1999 Yukon AC not working

does the condensor get wet or frost up?? and does the AC vent drip when the AC is on. My thoughts are maybe the blend door that switches from the heatercore to the evaporator is jammed or the moter failed. Also did a shop do the recharge, ??

Jul 29, 2010 | 1999 GMC Yukon

1 Answer

I need to recharge my ac in a 2002 gmc yukon where

your charge port is under hood on the line going to accumulator.look for black or blue cap with the letter L on it.WARNING BESURE TO WEAR SAFETY GLASSES.

Jul 20, 2009 | 2003 GMC Yukon

2 Answers

Ac compressor not turning on ac was recharged and still have same problem

disconect battery and reconect after about20seconds to reset and see if it will start and check freonn level after starting ac

Jun 30, 2009 | 2003 GMC Yukon XL

1 Answer

2002 yukon clack clack noise due to ac/ ac belt/ tensioner

have the ac recharged and pressure tested

May 27, 2009 | 2001 GMC Yukon

1 Answer

The A/C not working in yukon xl 2004

If----If everything was working great just prior to replacing the battery...In a desperate attempt--just kidding.

I would disconnect the battery
touch the battery's neg & B+ cable ends together.
This discharges capacitors.
Walk away for a few minutes, reconnect the battery and test HVAC functions to see if all is well.

If not.
The GM Dealer's Scanner can recalibrate the AC/ heater Actuators.
Note - Actuators do go bad, there are several in your truck.

Good Luck

Let us know


Feb 05, 2009 | 2005 GMC Yukon Xl Denali

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