When 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 upscale hotel room, the 2012 GMC...
Try turning the wheel back and forth while turning the key, use caution not to break the key. If you still cannot get the key to turn, you may have to have the ignition lock cylinder replaced. A certified technician,...
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...
When the check engine light comes on, it means the controller has detected a fault in the engine management system. At this time, trouble codes are stored that can help lead you to the malfunction. These codes can be read...
Hi Jay. Thanks for contacting us today. The problem with reduced engine power indication lights is that diagnosing the root issue can take a tremendous amount of trial and error or more importantly, detailed inspections to determine the source. The...
Hi Stephanie. Thanks for contacting us today. Unfortunately, there is no locking mechanism on the gas tank cover of the Yukon. Believe it or not, it's quite common for gas caps covers to not be locked. GMC might offer a...
Generally this is something caused by the flasher relay (https://www.yourmechanic.com/services/hazard-turn-signal-flasher-replacement) going bad or potentially, the turn signal switch in the steering column. The flasher relay is a small relay that allows the lights to flash based upon current flow and...
It is possible that your throttle cable could be getting stuck causing the throttle to stay open. I would recommend visually inspecting the cable and lubricating it if necessary to resolve this issue. If this does not fix the problem,...
Hello, thank you for reading in. Your owner's manual should have the exact procedure on how to silence the horn when leaving the key in the car. Typically on these and similar models it is a process of accessing your...
This vehicle is not equipped with a battery saver relay and interior lights are controlled by a lighting control module if equipped or operated manually.
The service life of spark plugs on this vehicle is 100,000 miles. If the plugs have never been replaced, exercise caution during removal as the plug threads can get quite stuck to the head, and possibly seized, if too much...
A flickering headlight means one of two things. Either the headlights is faulty because the filament inside has broken and is intermittently making contact, or there is a problem in the electrical supply for the bulb such as a bad...
You may have different problems that would require the pressures to be checked to see if your refrigerant is full. The A/C compressor (https://www.yourmechanic.com/services/ac-compressor-replacement) needs the proper amount of refrigerant to turn on and the temperature blend door actuator may...
The serpentine belt can break simply because it has reached the end of its service life. Another cause of breakage is if one of the driven rotating elements seizes. That would cause the belt to suddenly stop on that element...
Among the possible causes of the noise you are describing are a glazed or slipping serpentine (or other drive) belt and a starter motor with a pinion drive gear that is not fully and immediately retracting from the ring gear...
Hopefully, the two stalling scenarios have only one cause. Among the possibilities are a faulty torque converter lock up. You might be able to detect that with a sophisticated scan tool, such as the Tech 2. If the level of...
The instrument cluster electrical connections can become loose or have small amounts of corrosion in the connections to the cluster and other modules. This condition may require disconnecting the cluster and other modules and cleaning connections and adding some approved...
You will see varying amounts of condensation draining from the a/c drain depending how much humidity is in the truck. This is normal. The larger amount you see if just an indication of how much humid air is being removed...
Hi there. In most cases, when you have issues shifting from first to second gear with an automatic transmission, it's caused by restricted transmission fluid inside the hydraulic lines in the transmission. However, it is also possible that an inner...
Hi there. Your transmission is slipping all of the gears inside and may be due to a broken stator clutch and a broken torque converter. A torque converter that has failed will cause a grinding noise if the stator breaks...
