Q: Purchasing this used car

There may be a wiring issue in the speedometer circuit, or the gauge in the instrument cluster may be bad. I would ask for help from one of the mechanics at YourMechanic to help diagnose and repair your speedometer concern...

The symptoms described lead me to believe that your Cadillac may be experiencing a failing combination switch. The Cadillac’s turn signal switch controls a variety of lights, as well as your cruise control, and receives more use than any other...

Given you had a "sudden" failure, you might check the crank position sensor first. This component instructs the ignition module when to fire the spark plugs. If the crank position sensor is OK, work your way up the electrical path....

This may be a sign of a failing throttle position sensor. The throttle position sensor (TPS) is a sensor used to monitor the throttle position of the throttle plate inside the throttle body in relation to your foot position on...

Hello. The best thing to do is visually inspect where the smoke (https://www.yourmechanic.com/services/smoke-from-engine-or-exhaust-inspection) is coming from. Replicate whatever conditions necessary to get the engine to smoke again, and lift the hood to see where it is coming from. Keep in...

You should either visit your local parts store to purchase the oil and filter for your vehicle or have a mechanic like one from YourMechanic come and perform the service for you. The engine will use 0w20 oil and filter...

Hi there. Check the suspension to the front axle and see if the axle is loose or moving around. If the alignment is good on the front axle and the axle is solid and not moving around, then the band...

What you are describing sounds like a dirty or failing idle air control valve. The idle air control valve (https://www.yourmechanic.com/services/idle-control-valve-replacement) monitors the air intake as it is mixed with fuel prior to being injected into the engine at low speeds...

Hi Kyle. I can't guarantee that you're good here. The oil pressure sensor gasket helps to maintain the seal when the engine reaches operating temperature and gets hot. When this happens, the metal between the sensor and the block tends...