Q: Gas tank was cleaned by mechanic but not put in right now it won't pass smog

Hello! I recommend first having the starting system checked to verify the starter and battery are functioning properly. Both components are vital to starting the car. If either or are malfunctioning it will cause the vehicle to experience a no start...

Your car is equipped with what are called wheel speed sensors (https://www.yourmechanic.com/services/wheel-speed-sensor-replacement) which monitor the speed of the wheels at all four corners. When they detect that wheel speed is out of the ordinary in a given set of conditions,...

GM recommends that you change the oil (https://www.yourmechanic.com/services/change-oil-and-filter) in your Camaro every 7,500 miles. The following is a link to additional recommended service intervals for your 2015 Camaro for your reference that our experts here at YourMechanic are also able...

Hi there. First we would have to know what the concern is; inoperative, only one sensor working, a sensor that stays on, intermittent/erratic behavior? What was going on before the event occurred? Was the truck off road, hit something, find...

Hi there - excellent work, I commend you on your diagnostic skills! Yes, based on your description and testing, I would agree that the fuel pressure regulator (https://www.yourmechanic.com/article/symptoms-of-a-bad-or-failing-fuel-pressure-regulator) is the most likely candidate for this problem. Bear in mind that...

Changing to a higher aspect ratio tire, for example in your case moving from 205/50 R17 to 195/65 R15, will improve ride comfort due to the greater sidewall height. The brake rotor diameter, and the brake rotor part number, is...

Hi There, This may be a sign of a faulty MAP sensor as the vehicle responds adversely to a load put on the motor (i.e. putting it in gear, turning on AC or engaging the brakes). The Manifold Absolute Pressure...

Try disconnecting the negative battery terminal for 10 minutes or so. Reconnect the battery and start the vehicle. If the check engine light comes on, then further diagnosis (https://www.yourmechanic.com/services/check-engine-light-is-on-inspection) will need to be performed. If any electrical or electronic components...

The smoke could be burning oil. If the smoke occurs just at start up, the source could be leaking valve stem oil seals. If the smoke continues but is mainly white, that could signify an internal coolant leak. P0456 (https://www.yourmechanic.com/article/p0456-obd-ii-trouble-code-evaporative-emissions-system-small-leak-detected-by-jay-safford)...