Q: Check engine light

The smart key system Warning Light is located on the instrument panel, and is accompanied by an interior buzzer, and sometimes an exterior one. If the light is accompanied by three exterior buzzes, then a door has been opened and...

There is specialized equipment for finding leaks in AC systems. One way is to add a fluorescent dye the the system, run the system, and check for a leak with a black light. There are also electronic tools to detect...

Hi, it is possible that the compressor needs replacing, however, it can make a clicking noise if the system is low on refrigerant. You should never have to add refrigerant to the A/C system, so it sounds like there is...

I will assume the transmission does transfer power in the other drive gears. The electronically controlled transmission may have a failed solenoid that directs fluid pressure to the reverse gear assembly. In most cases, the transmission is removed and overhauled...

Hello there, thanks for writing in about your 2009 Chevrolet Aveo5. Batteries that drain overnight are not uncommon. This is called a parasitic drain (https://www.yourmechanic.com/article/the-top-5-things-that-will-drain-your-battery) and can have many different causes. The most likely are any aftermarket electrical accessories, such...

Thanks for writing in about your 2000 Chrysler Cirrus. When the coils were removed to replace the spark plugs, they should have been inspected for oil getting on them from a leaking valve cover. The leaking valve cover may leak...

The radiator replacement and the present no start problem are just coincidences. Check to see if there are any stored diagnostic trouble codes. Be sure you have a fully charged battery that passes an actual load test (https://www.yourmechanic.com/services/battery-is-dead-inspection). Confirm that...

The electric cooling fans are powered through relays, a fuse, and a control module. The fan motors themselves should be tested (the fan motors can be independently powered, on or off the car, to see if they work properly) and...

The Shop Manuals are vended by the OEM dealers. Your best bet is to just visit the Parts Department of any GM dealer and they can order a copy for you. Factory Shop Manuals are also sold on websites such...