Q: No start

The problem is likely the catalytic converter deteriorating. This happens over time, and the catalyst will rattle around inside the steel housing. The noise is loudest at start up or while revving the engine. With the engine off and cooled off,...

Hello. This sounds more like an electronic transmission control issue. GM has a TSB out for a low voltage condition at the solenoid pack. To see if this is the issue, fault codes should be read out and and then...

Check the brake light bulbs (https://www.yourmechanic.com/services/brake-light-bulb-replacement), sockets and grounds first - they endure the most harsh conditions, and are easiest to check. Given the "intermittent" condition you mention, the brake light switch (https://www.yourmechanic.com/services/brake-light-switch-replacement) itself, and the brake light relay are...

Hello. Thanks for writing in. Any automatic transmission can fail with a bad power supply. The technician may not be wrong, but it may be more in-depth than just a bad battery. If you are not noticing any other issues...

Hello, thank you for writing in. There are several things you will need to look at or have inspected. First, we need to look at the transmission itself, where the linkage from your shifter connects and switches gears on the...

There is probably a fault in the charging circuit and or the connections. The charging system output should be tested and if you are noticing this problem (the warning light) intermittently but it is nevertheless quite repetitive, it's possible to...

Hi there. It is probably a good idea to have one of our professional mobile mechanics first come to your location and complete an onsite inspection (https://www.yourmechanic.com/services/headlight-is-not-working-inspection) to determine if this can be repaired or if replacement of the headlight...

What you are describing may be a result of a faulty speed sensor, potentially low transmission fluid (https://www.yourmechanic.com/services/transmission-fluid-service) or a even a faulty transmission control solenoid. As your vehicle travels down the road, the computer analyzes data being sent by...

Confirm that the engine immobilizer system (security system) is not activated thus preventing the car from starting. If the immobilizer system is on, you may see a security warning light. If the warning light is on, to temporarily override the...