Q: I noticed by the automatic gear shift panel is a slot for a key. I think it was some type of security so that if you locked it, no

Your Body Control Module (BCM) controls the headlights on your truck. According to GMC your headlights meet all safety standards; however they have a technical service bulletin (TSB) that may pertain to your situation. The TSB number PIT5374 dated February...

The malfunction indicator Warning Light is located on the instrument panel. When this light illuminates and blinks, then the vehicle has detected that the engine is misfiring. When the light illuminates and is steady, then there is an issue with...

The most common cause of the pedal becoming hard is due to the power brake booster failing (https://www.yourmechanic.com/services/power-brake-booster-replacement). The brake booster can cause the ABS faults as well or it could be something different. A qualified technician like one from...

The sway bar on the front is a bar that goes from one side to the other. It has link rods that go to the lower control arms and controls body roll when going into a turn or during maneuvers....

Hello there. This is not unusual with higher mileage vehicles. A few different faults can cause this issue, such as the fuel pump (https://www.yourmechanic.com/services/fuel-pump-replacement), alternator (https://www.yourmechanic.com/services/alternator-replacement), low fuel pressure, plugs and coils, wiring fault or a battery (https://www.yourmechanic.com/services/battery-replacement). I recommend...

Hi there. It sounds like you have a wheel bearing (https://www.yourmechanic.com/services/wheel-bearings-replacement) or axle failure (https://www.yourmechanic.com/services/axle-cv-shaft-assembly-replacement). A failing wheel bearing will generally produce more noise when loaded; LF when turning right and RF when turning left. An axle can produce similar...

Hello - for a "no spark condition (https://www.yourmechanic.com/question/no-spark-at-spark-plugs)", I would check for problem codes first, whether the Check Engine Light is on or not. Any saved codes, whether transient, or permanent, could be very helpful with this diagnosis. I would...

Hi there. Sounds like the transmission range selector sensor is failing. Check the harness to the range selector on the transmission shifter located on the housing of the transmission. Visually look at the sensor and see if its broken or...

This may be related to a faulty starter solenoid. The starter solenoid is located on the starter and has internal electrical contacts that transmit electricity to the starter. When this fails, it may cause a clicking sound and will not...