Q: Car driver's side door not opening

Your car is equipped with a tire pressure monitoring system (TPMS) that keeps tabs on the amount of air in each tire. However, there are a few things you should know about how it works to make sure that you’re...

When your car is started via the remote start button, the horn will honk to confirm that the vehicle has been started. When the quiet start feature is turned on, the horn will not honk, and the climate control fan...

You may have a low voltage condition in the system or the headlight dash lights are shorted within the cluster. I would suggest having the charging system checked first. Then I would have the system scanned for a cluster problem...

GM has a TSB out concerning clogged injectors (https://www.yourmechanic.com/article/what-causes-fuel-injectors-to-get-clogged-or-dirty) that may cause all of the rough running/no start symptoms that you are experiencing. A professional fuel injector cleaning may help correct these various engine running issues. The procedure does require...

A faulted sensor like the steering angle sensor (https://www.yourmechanic.com/services/steering-angle-sensor-replacement) can cause these systems to malfunction. A steering angle reset is required with an alignment on these vehicles and involves a procedure that includes disconnecting the battery. If you'd like a...

Hello - engine noises can sometimes be difficult to diagnose, especially without actually hearing it. Rod bearing noise can sometimes best be confirmed by snapping the throttle open ( aka "blip" the engine), if you get the rapping noise then,...

Your vehicle could have a battery that has lost it's charge or the battery cables are corroded or loose. Check the battery with a digital volt meter and see what the voltage is. If the voltage is below 11.5 volts,...

The relay maybe for the horn or for the security system. Look at the relay and follow the wiring to determine what the relay operates. If you need further assistance with your electrical system (https://www.yourmechanic.com/services/electrical-components-are-not-working-inspection), then seek out a professional,...

In your earlier question, you indicated possible lack of engine oil, hence in your case a likely cause of the knocking noise is engine bearing damage. Below is a complete explanation though of all possibilities for you to consider and...