Q: Headlights and dashboard lights flash off/on when switch control is switched to lights on

Just to be informative the radiator and the overflow tank are two separate parts that both store coolant and if one is leaking the other is not leaking. Also a bad thermostat will not cause a radiator or an overflow...

You should have the oil filter removed to see if it was double gasket-ed when the oil change was done. This means the old filter gasket did not come off and when new filter was put on it did not...

If a sensor has failed for the seatbelt light, then the light will come on. If the low fuel warning light does not come on, it indicates that either the vehicle was not driven long enough to make the light...

Hi there. Take a remote stater button and hook it up to your starter. Turn your ignition key to the ON position and have someone in your vehicle with their foot on the brake and the parking brake set. Click...

Hello, thank you for writing in. The noise may be related to the hub assembly, brakes, or suspension. The first thing you should check is the brake pads and rotors. If the rotors are warped, or the pads are not...

Hi there - since your radio is an RDS model, you will to have a GM service center unlock your RDS radio (https://www.yourmechanic.com/article/how-to-unlock-a-chevrolet-theftlock-radio-by-jason-unrau). RDS radio models cannot be unlocked with the procedure you mention.

The only thing you can do to get out the metal shavings from the cylinder without removing the cylinder head is to use a long air hose pressure probe into spark plug hole and blow air into cylinder to try...

It might be exhaust system noise but there is also a possibility that a "rotating element", such as a wheel bearing, tire, or brake rotor interference is the cause. As you describe it, the noise is marked and obvious enough...

You may have a clogged radiator cap so coolant can go into overflow tank and back into radiator. Check cooling fan clutch to see if it is locking up as it should.