Why is the AC not working on my Yukon XL?
These fuses must be replaced, as well as the wiring harness, to prevent this AC problem. The AC blower motor is not working properly in the Yukon XL. The TSB published by the manufacturer states that the blower motor stops working or continues to run in low temperatures.
Why does my Yukon XL keep blowing fuses?
The fuse and circuit breakers in the Yukon XL prevent damage from occurring to the AC components by blowing when there is an overload of voltage. The fuses are blowing because of the wiring harness problems found in the Yukon XL. These fuses must be replaced, as well as the wiring harness, to prevent this AC problem.
What are the symptoms of a bad cooling fan relay?
1. Engine running hot One of the first symptoms commonly associated with a bad or failing cooling fan relay is an engine that runs hot or overheats. If you notice that your engine is running at higher temperatures than normal, that may be a sign that the relay is not functioning properly.
How can I tell if my air conditioner relays are working?
This part can get really complicated, but the first thing to do is run the A/C with gauges connected to observe the system pressures and monitor the circuit from the PCM to the relays. You are looking to see if the PCM sends power to one or both relays to turn on the coolant fans.
This part can get really complicated, but the first thing to do is run the A/C with gauges connected to observe the system pressures and monitor the circuit from the PCM to the relays. You are looking to see if the PCM sends power to one or both relays to turn on the coolant fans.
How is the compressor clutch relay turned on and off?
In some vehicles the compressor clutch relay is turned on and off by the low pressure switch and the evaporator temperature sensor. In a computer controlled system, the compressor clutch relay is grounded by the computer. If the fuse is good, disconnect the electrical connector from the compressor clutch coil.
Why are my coolant fans not running when AC is turned on?
Coolant fans not running when ac is turned on. AC compressor clutch engage then it will disengage. System has freon in it. It was working find but now nothin7. My car has 234565 miles. My car has an automatic transmission.
What happens when an AC pressure switch fails?
Unable to cool the car If either of the AC pressure switches fails, then the system will have a difficult time maintaining the pressure required to function properly. If the pressure is not right, then the AC system will not be able to produce the cold air required to adequately cool the cabin.
Why does my GMC air conditioner stop working?
For about 5 miles the A/C worked normally till we hit a R/R and the bump made it stop blowing cold air and he was finally convinced. Back to the shop and 30 min later they found the problem. Turned out to be the low pressure switch, (under hood on bottom of small tank) it was corroded and causing a loss of electrical contact.
Why is the speedometer on my Yukon Denali not working?
The speedodometer and the RPM guage stopped working at most of every time that the SERVICE TIRE MONITOR appeared on the message center. Entire instrument panel with speedometer and all gages including the digital readout works erratically.
Why is my GMC Yukon XL AC not working?
While there are a variety of reasons your GMC Yukon XL 1500 air conditioning won’t work, the most common 3 are a refrigerant leak, an electrical climate control issue, or a problem with the air conditioning compressor. What will be the outcome of an air conditioning system diagnosis?
What happens when you run a / C on Yukon Denali?
Front blows cold while A/C is on, rear blows hot air. After about 20 minutes running, all airflow to front dash area will be slowly diminish, eventually fully cutoff (AC, heat or outside air). This includes floor vents, dash vents and defrost.
Why does my Yukon Denali blow air out of the vents?
With or without a/c. Air conditioning is on but the air coming out of the vents is heated air. It does the opposite sometimes as well. I will have the heat on and the air coming out of the vents is cooled air. 2003 GMC Yukon Denali XL started blowing air out of defrost after a battery change. Hopefully its just a bad mode actuator.
For about 5 miles the A/C worked normally till we hit a R/R and the bump made it stop blowing cold air and he was finally convinced. Back to the shop and 30 min later they found the problem. Turned out to be the low pressure switch, (under hood on bottom of small tank) it was corroded and causing a loss of electrical contact.
What are the TSBs on a GMC Yukon?
These TSBs cover wiring, electrical, blower and climate-control problems as well as many other issues found in the Yukon. The air-conditioning problems in the Yukon can also include the fuse and thermostat problems some GMC owners are experiencing.
Why does my GMC Yukon have 4 wheel drive?
Due to minor tire size differences and track length differences when turning, the front and rear axles can ‘fight’ against each other on high-friction surfaces and results in a condition sometimes known as ‘crow hop’ as tires are forced to slip to the ground.
What kind of fan does a Yukon Denali use?
My new 2011 Yukon Denali and my 2006 Duramax LBZ does it too. I’ll be curious to the answers that your thread gets. If just noticed in the Denali for the first time today.
How much weight can a GMC Yukon XL pull?
The 2009 Yukon XL 4 wheel drive can pull 5400lbs normally. If you get the max trailering package you can pull up to 7900lbs. If you have any further questions please let me know. Thank you, How much weight can a 1994 Yukon 5.7 4 x 4 safely tow. This vehicle has a Reese hitch already installed with the brake package installed.
How big of a trailer can a Yukon Denali tow?
I really like a 2011 Denali (regular not XL) with AWD, the 6.2L V8, 3.42 axle, integrated trailer brake controller, etc. Specs say it can tow 8,100 pounds though looking for feedback/advice on using the Denali to tow a 7,300 pound trailer. We live in the east – mostly flat – but do take long trips that have some moderate uphill climbs. Thanks.
What’s the wheel ratio of a GMC Yukon?
The dealer said that the real wheel ratio was 3.42 (or something like that) and I thought (perhaps incorrectly!) that with the tow package the rear wheel ratio was automatically 3.73. Bottom line–we have purcharsed a travel trailer with a fullly loaded weight of a bit under 7000 lbs, and will this Yukon work with this size trailer.