Q: Does a 99 GMC Sonoma have an electric fuel pump or a mechanical

Hi. I'm not exactly sure what you mean, but the parking brake cable may be seized. Rust on the face of a brake rotor or brake drum is normal and not a cause for concern. It looks like your parking...

If you are getting overheating only at lower engine speeds with no obvious reasons, then you will need to check if there is good flow through the radiator using a laser temperature sensor. By doing this you will be able...

Hello. If the Check Engine Light remained on after the battery was plugged in, then it may be possible that the issue is with the wiring. Faulty wiring or a bad connector to the cam position sensor (https://www.yourmechanic.com/services/camshaft-position-sensor-replacement) keeping the...

German luxury cars built in this century are very complicated. They have multiple electronic control units for different functions, one for the engine, one for the transmission, one for the brakes and half a dozen more for various body functions....

Hello, thanks for writing in to YourMechanic. If the caliper boot is torn open then you will get dirt, debris, water, and road salts in the caliper piston surface. The caliper may seize or tear the caliper piston seal causing...

Hi there. Usually the hose that's directly under the top radiator hose is a return surge tank hose (https://www.yourmechanic.com/article/symptoms-of-a-bad-or-failing-surge-tank-hose); typically coming from the radiator overflow coolant reservoir. Since winter is coming around soon, the best way to diagnose a coolant...

Hi there. I completely understand about time constraints and your concern about a potential fire hazard. Many people continue to drive their vehicles even if there is oil on the exhaust components as they usually smolder and smoke. However, the...

Hi there. First check the transmission fluid and make sure that it's full and red in color. Then check the harness to the transmission shifter position sensor and see if it's connected. There is a pressure relief valve in the...

Hi Steven. It's very difficult to prove when electrical glitches occur or who should be "on the hook" for repair or diagnostic checks. The best advice I can offer is for you to speak with the service manager of the...