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I have an old 2001 Suburban. The clutch of the compressor,
The clutch of the compressor, sometimes was not engaging or sometimes was almost burning the belt. I changed the Low Pressure Switch and the Compressor + Clutch Assembly and still it doesn't work. I am looking now to replace the AUTOMATIC RECIRCULATING SWITCH OR HIGH PRESSURE CUTOUT SWITCH OR REPLACING HVAC CONTROL MODULE OR PCM? Sorry for the typo... My name is*****: Has the clutch been slipping? Are you having any trouble shifting?… read more
BRIAN
BRIAN
Program Coordinator/Professor Automotive
BS
342 satisfied customers
Heater only works intermittently, and usually only on high.
Heater only works intermittently, and usually only on high. Headlights flash off and on, blinkers flicker. Issues with lights and blinker are accompanied by a weird crackling sound. When headlights sh… read more
Chris (aka-Moose)
Chris (aka-Moose)
GMC Technician
Vocational, Technical or Trade School
766 satisfied customers
I just. Mechanicgm. I need assistance for the installation
I need assistance for the installation of an aftermarket radio in a GMC Yukon 2003 … read more
Don - Mo Lurch
Don - Mo Lurch
ASE Certified Technician
Vocational, Technical or Trade Scho
248 satisfied customers
Actually mine is a gmc envoy. If a service order from a
actually mine is a gmc envoy. If a service order from a dealer back on 7/23/2007 says "replaced UBEC and reprogrammed control head", would the control head have the updated software that was released … read more
sprinkles08
sprinkles08
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High School or GED
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AC issues. 2004 Yukon. Attempting to. Thought that the freon
Yes, attempting to. Thought that the freon was low but after evacuating the system we found it was not. In an attempt to reload the freon into the system we realized the compressor was not engaging or even attempting to engage so we could not get it to accept the freon. I have checked all of my relays and fuses and all are good. … read more
David Craig
David Craig
OWNER/MECHANIC
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94 gmc 1500 4x4. check engine light comes on and tranny
94 gmc 1500 4x4. check engine light comes on and tranny starts acting up. changed throttle position sensor, and tranny filter. no help. any ideas? chris… read more
Gary
Gary
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Vocational, Technical or Trade Scho
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GMC Yukon XL 1500 Denali: can you provide me with the build
can you provide me with the build sheet and the labor operations on my vehicle via my vin number? 1GKFK668X8J239893… read more
Gm Tech (Cam)
Gm Tech (Cam)
GMC Mechanic
Vocational, Technical or Trade Scho
1,912 satisfied customers
GMC Sonoma: My '99 Sonoma's CCOT A/C won't engage the compressor-clutch,
My '99 Sonoma's CCOT A/C won't engage the compressor-clutch, and has a low-side reading of more than 100-psi. What color wire to the compressor-clutch is the "positive" lead? I'm trying to diagnose th… read more
GMWrencher
GMWrencher
Associate Degree
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GMC Yukon XL SLT: I have a 2004 GMC Yukon XL with dual driver/passenge
I have a 2004 GMC Yukon XL with dual driver/passenger temperature controls. It is RWD. Over the past year, there was a clicking noise under the dash sometimes when the A/C is on. From time to time the… read more
Chris (aka-Moose)
Chris (aka-Moose)
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Vocational, Technical or Trade School
766 satisfied customers
GM yukon denali xl: I have a 2003 yukon denali xl. after a
I have a 2003 yukon denali xl. after a dead battery the front dual climate control began to not function properly, heat would blow on one side and ac on other. Then no cold air at all. it still blows … read more
Gary
Gary
ASE Certified Technician
Vocational, Technical or Trade Scho
1,589 satisfied customers
GM Sierra: Hello, I have a 99 gmc sierra and i can not get
Hello, I have a 99 gmc sierra and i can not get the a/c compressor to engage.I tried jumping the pressure switch with a paperclip and it made no difference. It will engage if jump the relay terminals … read more
Dave Nova
Dave Nova
GMC Technician
Associate Degree
929 satisfied customers
GM Acadia: I have had our 2007 Acadia into the GMC dealership
I have had our 2007 Acadia into the GMC dealership three times due to no a/c or cool air - indicator button flashes. They recharged with freon twice & checked for leaks but couldn't determine where th… read more
Pete
Pete
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General auto certifications
33,185 satisfied customers
gmc yukon: 2005 gmc yukon front defrost fan wont blow when
2005 gmc yukon front defrost fan wont blow when first turned on. after vehicle warms up then usually works. also noticed when vehicle cold.. start car no fan . shut off car wait 1-2 minutes then start… read more
Dave Nova
Dave Nova
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Associate Degree
929 satisfied customers
GMC Yukon SLT: I have 2005 gmc yukon slt. It has 138k. The
I have 2005 gmc yukon slt. It has 138k. The traction control off light is flashing intermittently seems to come on more when in reverse and when the brakes are applied at the same time, although it ha… read more
Pete
Pete
Automotive Diagnostic Specialist
General auto certifications
33,185 satisfied customers
I have a 1991 gmc2500 that is displaying A/C flashing in the
I have a 1991 gmc2500 that is displaying A/C flashing in the control display. The air conditioning was working fine last year. I checked charge seems fine, but there is no power coming to the clutch o… read more
Jerry
Jerry
Service consultant
Vocational, Technical or Trade Scho
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GMC 1500 Series: i have a 2007 gmc serria slt classic 4dr I
i have a 2007 gmc serria slt classic 4dr I am starting to hace to start my ac many time to get it to come on. when it doe it cools fine the truck ha 40000 mile… read more
Jerry
Jerry
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13,108 satisfied customers
GM Yukon: Problem with evaporator icing on drives longer than
Problem with evaporator icing on drives longer than 10 minutes at ambient air temperatures less than 88-90 degrees with shorter times as ambient temperature goes lower and longer times as ambient temp… read more
Amedee
Amedee
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Vocational, Technical or Trade Scho
20,937 satisfied customers
GMC Yukon 4x4: 1999 yukon 5.7 clutch fan when i start truck
1999 yukon 5.7 clutch fan when i start truck fan is blowing fast until i get going then when engine is warm not overheating go to start from stop and the fan is blowing fast. i get home open the hood … read more
Gm Tech (Cam)
Gm Tech (Cam)
GMC Mechanic
Vocational, Technical or Trade Scho
1,912 satisfied customers
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Meet the Experts:

Gm Tech (Cam)

Gm Tech (Cam)

GMC Mechanic

1,912 satisfied customers

GM Grand Master Technician 2007. 14 year experience.

Gary

Gary

ASE Certified Technician

1,589 satisfied customers

GCM master tech over 25 years

Dave Nova

Dave Nova

GMC Technician

929 satisfied customers

ASE Master Certification. GM World Class Certification

Chris (aka-Moose)

Chris (aka-Moose)

GMC Technician

766 satisfied customers

16 years of experience

JFN1

JFN1

ASE Certified Technician

272 satisfied customers

GM Master Technician

Don - Mo Lurch

Don - Mo Lurch

ASE Certified Technician

248 satisfied customers

GM, GMC, Chevrolet Cert., Heavy Line Mech, Race Shop Owner, Mobile Electronics

Mike S.

Mike S.

ASE Certified Technician

241 satisfied customers

GMC N.A.I.S.E. Certified Auto-Mechanic

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Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

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