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A Buyer’s Guide to the 2012 GMC Yukon
When you want a big SUV that can hold its own, come what may, you’ll be happiest with a GMC Yukon. Although the inside of one of these vehicles can sometimes resemble an...

Related questions

Throttle is not responsive - 2003 GMC Yukon
Hi there. From the description your vehicle only shakes in first gear, with delayed upshift seems unusual. Assuming the P0300 code is continuing to return, it leads me to believe you may have a fuel delivery issue. Low fuel pressure...
Ignition Lock cylinder issue
The attempted theft may have caused damaged to the housing behind the steering wheel. The spring loaded action comes from inside the housing and not the lock cylinder so I have a feeling you will either have to replace the...
Truck over heating
It is possible to have a partial blockage in the radiator or air in the cooling system. Make sure that the fan shroud is fully attached with no gaps. It helps the system cool by forcing air to be pulled...
Dash lights on, now the car won't start at all
Since so many systems are transmitting problems, check the battery connections. A simple check, but sometimes a faulty connection can cause all kinds of problems. Have a certified technician, like one from YourMechanic, scan the vehicle and pull all of...
The running rough may have something to do with the two different years of the engines but only a computer scan and fuel pressure test would be able tell. Have a certified mechanic, like one from YourMechanic, diagnose the car's...
Yukon--We have replaced the Throttle Position Sensor twice now and the engine light still comes on.
There could be a wiring issue in that area where the oil leak was. You did not mention the code number. You may have two concerns with the vehicle. The car jerking is related to the Check Engine Light being...
Hesitation stumble and lack of power at low rooms and speeds.
You should check the crankshaft damper for evident movement of the damper's outside part from the inside part. The rubber in the middle may have slipped. This would cause the distributor timing to be set incorrectly. You can recheck the...
When AC is on I hear a beeping noise
Hello. Small beeps when the AC is on can be caused by dirty or faulty AC components. A common source of a beeping or chirping sound when the AC is turned on is a dirty or faulty evaporator case. The...
I have a 99 Yukon when I put it in reverse it goes forward. It has only done it twice
Hello and thank you for contacting YourMechanic. Make sure the linkage on the side of trans moves along with the shifter cable as the cable moves. If that's okay, then drop pan and check the linkage to manual valve...
Do yukons back brakes have rotors or hubs?
Your Yukon is equipped with rotors and pads in the front and rear of your vehicle. If you need to have this done, consider YourMechanic, as a certified mechanic can perform a brake pad and rotor replacement at your home...
Whats the best and cheapest way to relace a broken spider gear in the rear end?
Hello, thanks for writing in about your GMC Yukon. You would first have to determine what caused the gears to break. If the rear end is repairable then get the broken parts replaced. If it's too damaged then I recommend...
Why no brakes
I would first recommend checking the brake fluid level. There needs to be ample brake fluid in the system to so that there is not a lack of hydraulic pressure. Secondly, check to be sure you do not have vacuum...
My code reader says I have a bad mass air flow sensor ans crank shat sensor test drive ran better shut off & engine Lt. Same code
Hi there. The problem you are describing, sounds like you may have a poor connection in the connector at the mass airflow sensor. Although, sometimes aftermarket parts do not perform as well as factory (OEM) parts. Check for corrosion and/or...
What should I do if the shifter won't change gears?
Hi, thanks for writing in. This is likely a shift linkage issue. There is a small plastic piece on the shift lever that helps to connect the shifting cable to the lever you see inside the vehicle. When these break,...
Vehicle works perfectly fine but when it goes over a speed bump the entire vehicle turns up and must be restarted
This is most likely a sign of a potential grounding issue that may be caused by a bump knocking a wire loose. This can cause the vehicle to die if the proper ground is lost. I would start diagnosing this...
Truck is lacking power when accelerating, has rough idle, cel on and some times stalls
If the Check Engine Light is on, then a fault code is set. While yes it could be the TPS, have the system diagnosed and fault codes pulled to verify what is actually causing the issue. If you replace the...
My yukon is running like nthere is something terribly teribly wrong
The mass air flow sensor measures the speed of the air going into the engine. The P0101 code could be an electrical issue. The PO449 code is related to fuel tank emissions. Codes give you the area of a fault...
Yukon Denali Sun Roof Leak Repair
Yes, it is possible to replace just the rubber seal without replacing the entire sunroof. This can be a tricky process to replace. I would suggest having a certified expert, like one from YourMechanic, come to your home to inspect...
My car won't go past 35mph
Hi there. From the description you provided, your vehicle has problems with the transmission again. You stated it will not shift into 3rd gear again, like before the transmission was rebuilt. If the transmission is again the problem, it should...
Can my antifreeze leak be linked to my transmission problem?
Hi there. You will need to first find the coolant leak and address the leak and get it fixed. The engine may overheat and cause even more problems. The transmission or engine misfires could be from the coolant leak if...

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