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C3500

Hello. If you are losing battery power to particular circuits then most of the time this is caused by a bad ground connection, a failing battery cable (https://www.yourmechanic.com/services/battery-cable-replacement), or it may be a bad transmission position sensor (https://www.yourmechanic.com/services/transmission-position-sensor-switch-replacement). It is...

Hi Don. There are two things that quickly come to mind. First, if the wrong master cylinder was purchased and installed or the brake booster is damaged, it can cause these problems and second, it's more likely that a brake...

There are a number of issues that may cause an ignition system to not produce spark. A bad crankshaft position (CKP) sensor (on engines that do not have a distributor), or broken, loose or corroded wires from the sensor to...

Hi, and thanks for contacting YourMechanic. First of all, the mass air flow (MAF) sensor requires its screen; the air registering through the sensor is monitored with the elements in the screen. By removing the screen, you actually destroyed the...

It is possible you have a broken shift selector pin or shift fork (3rd/4thh gear). This needs a good look by a professional mechanic. A YourMechanic professional can help with this inability to shift (https://www.yourmechanic.com/services/car-does-not-shift-from-park-to-drive-inspection) issue.

The lower intake manifold gasket you replaced seals both coolant, and oil passages. It is possible that coolant (under higher pressure) is leaking into an oil passage. It is also possible you have a bad head gasket - leaking coolant...

It sounds like this fault may have more going on than just the fuel delivery issue. The vehicles ECU will command the fuel pump to turn on normally when a vehicle is started. If the car only primes for the...

You may have a failing voltage regulator that could be allowing the alternator to supply too much or too little amperage to the battery resulting in the battery never maintaining a consistent charge as it is designed to. The voltage...

Hi there. There could be an issue with the spark plugs not firing causing excessive amounts of hydro carbons (raw fuel) to go into the exhaust system. When excessive fuel goes into the exhaust system, the catalytic converter will glow...

When you had the water pump replaced (https://www.yourmechanic.com/services/water-pump-replacement) the surface on the engine block most likely did not have all the old gasket material removed. I would recommend having the water pump replaced and both surfaces cleaned thoroughly by a...

Hi there. White smoke out of the tail pipe at initial start up is typically caused by radiator fluid that has found its way into the engine oil. As a diesel truck owner, you understand how black smoke is caused...

It sounds like the Idle Air Control valve (https://www.yourmechanic.com/services/idle-control-valve-replacement) is gunked up. It may be possible to clean it, or it might have to be replaced. A YourMechanic professional can help to diagnose the stalling issue (https://www.yourmechanic.com/services/car-is-stalling-inspection) and replace the...

If the heat sensitivity is a good clue, this could well be the ignition control module, which is quite heat sensitive on the big block Chevy's. Would check fuel pressure (while running) as well to make sure you're getting enough...