Q: Car wont start

Hi. It may be a compressor issue, or it could be an expansion valve that is a stuck open. A stuck open expansion valve would show a higher than normal pressure on the low side when the AC is in...

It would appear that the vehicle has several problems that will need to be addressed separately. The radio staying on is probably caused by a switch that is not turning off all the way. This may also be related to...

Hi there, thanks for writing in. I'd be happy to help. This sounds like you may need to replace the bags (https://www.yourmechanic.com/article/symptoms-of-a-bad-or-failing-suspension-air-bag) if they are not holding air. Try checking to see if when the compressor comes on if you...

If electronics and fuel supply have been ruled out, the next possible cause is a mechanical issue. Have a compression test done across all 4 cylinders. If #3 is lower than the other three cylinders, it is possible there is...

Hi there. This sounds like you have axle failure. Look under the car where the axle boots are and see if the boots are torn, leaking, or missing. Also look for grease that may have been leaked; usually all around...

Hi there. Your Silverado problem could be multiple fuel delivery or ignition timing components that are either damaged, or you have faulty electrical connections powering or monitoring them. The best thing we can offer is to have a professional mobile...

Hi there - the P0505 (https://www.yourmechanic.com/article/p0505-obd-ii-trouble-code-idle-control-system-malfunction-by-jay-safford) code you are getting indicates a problem with the idle air control circuitry. Since you have replaced the IAC valve, this could still be a problem with the connectors or wiring to the IAC....

If the parking brake warning light is on and yet the parking brake is disengaged, that typically means that the switch is stuck. If the warning light yo are seeing though relates to the brakes generally, that could mean the...