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Express 3500

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Problem with a wheel bearing.
A mechanic will have to check to see if you have a wheel bearing that is noisy when they test drive the vehicle. You are not specifying the front or rear bearing noises. The front is part of the front...
Question
Can't turn off antitheft system
If the anti-theft light is on then the vehicle is not going to start. You may have a defective code key. If you have another key then I would suggest you try it to see if the problem goes away....
Question
No cold air in back
Hello. There are doors that open/close in the heat system and A/C system that allow hot or cold air to come through when turned on. It's possible that the door for the A/C, going towards the back, is not opening...
Question
No left turn signal outside
Hi there. I would start by checking the bulbs. It is possible that this is just a bulb issue. If the bulbs are faulty then they need to be replaced. If the bulbs are fine then I usually use a...
Question
Engine overheating replacing thermostat
Hello. Let me start off by saying that it is just as bad, if not worse, to run an engine with no thermostat as it is to run it with a bad one. It will also cause engine damage. It...
Question
Noises around serpentine belt
Hello. Using a small hose would help to isolate the noise. You can hold one end to your ear and the other to each pulley to listen for the noise. It is common for the balancer to not spin true...
Question
P0300 codes while idling
Hello. If unplugging the MAF sensor causes the engine to run better then there is a secondary air leak into the engine. This means that there is a vacuum leak from someplace. Most of the time on this engine it...
Question
CEL transmission slipping
Hi there. You definitely appear to have a voltage issue with the vehicle. From what you are can be a bad connection at the battery, a failing alternator, or most commonly a bad ignition switch. I usually start by checking...
Question
AC makes noise after putting on expansion valve
Hello. It sounds like your new compressor may be failing. Flushing the system is not enough when the compressor fails. When there is debris in the system, it gets stuck in the expansion valves, the condenser, and the accumulator. If...
Question
Got oil change made it to gas station and it cranks but won't start
The cause for the van not starting should not be related in any way to the oil change. The only thing that may have happened could be the mechanic may have accidentally bumped a sensor or a wire. I would...
Question
My car sputters when cold but idles smoothly after warmup - 2003 Chevrolet Express 3500
Hi there. Beyond the MAF sensor, in most cases, an engine that stumbles when it's cold is caused by one of three different components: clogged fuel injectors, a dirty throttle body, or an EGR valve that is damaged or also...
Question
Running lights, instrument panel light, and turn signals do not work
Hello. With electrical issues like this you want to turn your attention to the components that can effect more that one system at once. These areas include shorts in a socket, a short where these systems all have wires running,...

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