20 Most Recent 2001 GMC Yukon XL Questions & Answers


Yes input and output sensors

2001 GMC Yukon... | Answered on May 02, 2018


the caliper is sticking. did you replace all the hardware and lube the slides?

2001 GMC Yukon... | Answered on Feb 25, 2018


By cycling the key and it starting, I would suspect the fuel pump. Sounds like low pressure.

2001 GMC Yukon... | Answered on Jan 12, 2018


Yes I think there is a problem in radio or in cigarette plug check if the fuse are the same for both

2001 GMC Yukon... | Answered on Dec 14, 2017


check VEH STOP fuse in the instrument panel fuse box. If good, check for battery voltage in the bulb connector on the light blue wire with lights on. If no voltage, check for voltage in the rear junction box. Pull connector 4 and check for voltage on the terminal that connects to the light blue wire. If not voltage, you'll have to check the harness between the rear junction block and the underhood fuse block

2001 GMC Yukon... | Answered on Oct 13, 2017


If they sound like they are trying to do something it's not the lock out switch . But to be sure pulling out the switch an testing for B+ voltage to and from the switch . Plus pull the other door switches to see if they have B+ voltage and good grounds would be the thing to do.. If you don't know how to check automotive electrical circuits your best bet , take it to a qualified repair shop .
Passenger Power Window Operation
The passenger power window switches incorporate window up and down relays. The relay coil feed and supply sides are powered through the RAP fuse supply voltage circuit. The normally closed contacts of each relay is connected to ground. The load side of each of the relays are connected to either side of the power window motor through the power window up and down circuits. The up and down relay control circuits are connected to the normally closed contacts of the passenger window switch. These contacts are wired in series with the power window master switch, through the power window master switch up and down signal circuits and then to ground when the power window master is placed in the up or down position. This allows for the up and down operation of the passenger power window from the power window master switch. The center pole of the passenger power window switch is also connected to ground and will energize the relay when placed in the up or down position.

Driver Power Window Operation
The driver power window is unique from the passenger power windows in that it does not use window up and down relays. The driver power window is operated directly from the power window switch.
The normally closed contacts of the switch are connected to ground and the center pole is connected to the RAP fuse supply voltage circuit. By placing the left power window switch in the down position, voltage is applied to the power window motor left front down circuit and to the power window motor. The other side of the power window motor is connected to ground through the normally closed contacts of the left power window switch through the power window motor left front up circuit and drives the window down.
By placing the left power window switch in the up position the polarity of the motor is reversed and the motor drives the window up.

Has circuit breaker for B+ power
• PWR WDO CB 25A (fuse block) (System power for left and right windows 2-door vehicles. System power for LF and LR windows 4-door vehicles)
• PWR WDO CB 25A (IP wiring harness junction block) (System power for RF and RR windows 4-door vehicles)

Could be passenger door switch .

2001 GMC Yukon... | Answered on Aug 21, 2017


I was having a clicking noise from a actuator under the dash of my car, it was a blend actuator.. Years ago they used cable then vacuum hose and now a lot of vehicle us actuators (motor driven gate) to open and close the vents, A/C and heater ducts. I do not know for sure that is your problem but when mine went bad I would get a clicking noise sometimes it click for a few seconds after I turned the car off. Just a thought.

2001 GMC Yukon... | Answered on Aug 02, 2017


Hey M, the pressure could be nothing but "hot air" and not freon... (I had this same problem!!) I let off a bunch of pressure..(nothing but clear hot air!!) ..using a small flat punch..on the low pressure side... if freon on comes out right away..stop.. if nothing but hot air comes out.. keep letting it out until freon comes out,,, When mine started letting out freon,, I quit and tried the A/C again... and it has been working fine since.. Just my recent experience!!!!

2001 GMC Yukon... | Answered on Jun 27, 2017


Take it to a reputable trans shop. These transmissions are controlled by a computer. If this is a 2500 or 3500 Yukon, I bet it is equipped with the 4L80E transmission. These have a tendency to allow transmission fluid into the large electrical connector, and it shorts out wires and can make things go crazy. There is a way to silicone the leak and fix it(videos on YouTube) or a good honest shop can do it without replacing parts.

2001 GMC Yukon... | Answered on Mar 10, 2017


Contact this company, they are the go to pro's on car and truck audio.
crutchfield.com

2001 GMC Yukon... | Answered on Jun 02, 2016


It's not the fuse. That fuse controls many different things. I would pull the A/C controller. Unplug it and plug it back in. If it comes on, It was corrosion at the plug. If not, I usually tear it down and fix the controller. Your best bet is to replace it, Unless you are into electronics and can solder very small components.

2001 GMC Yukon... | Answered on Mar 06, 2016


1. Oil Pressure Gauge Not Working You will notice this happens when your oil pressure gauge is not reading, whether the engine is turned off, idle or running. Try to step on the gas to rev up the engine. If the oil pressure gauge still doesn't change its reading, your gauge is busted. It's best to replace it as soon as possible because you won't have any idea if your car is already overheating or not.
2. Oil Pressure Gauge Reading Too Low When your engine is idle, the oil pressure gauge will have a low reading. When the engine starts running or when you're already cruising or on the freeway, your gauge's reading should have increased. If it stays on a low reading, then you now your oil pressure gauge is broken.
3. Oil Pressure Gauge Reading Too High Another common oil pressure gauge problem is when your oil pressure gauge is reading too high when your engine is idle or when it's turned off. Rep

2001 GMC Yukon... | Answered on Oct 24, 2015


you have a bad brake light switch

2001 GMC Yukon... | Answered on Sep 10, 2015


What was the result? I have the exact same issue on my 05 Yukon xl, only 43,000 miles! :-( please help!

2001 GMC Yukon... | Answered on May 31, 2015

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