20 Most Recent 2001 Chevrolet Silverado 2500HD - Page 7 Questions & Answers

several things, the rear main seal is accessable by removing the transmission. if this vehicle is standard transmission, then would recomend new clutch at this time given the amount of labor involved. if automatic, remove drive shafts, transfer case, transmission, and flexplate ....replace rear main. approx 5 hrs.DW Mylin

Check the back of the brake pedal to insure that the switch is working properly. Lubricate the switch and return mechanism for proper operation.

The first thing i would check is the heater blower motor for power.If the blower motor has power then pull and wiggle on the blower motor resistors pigtail or connector but make sure the heater and fan motor and the ignition switch are turn on so you can here if the motor comes on. A lot of times these blower motor resistors get hot enough to melt the connector causing it to loose its connection.

this might be your fuel pump problem! Go and change a powerful fuel pump might solve the problem then!From,Golf Mechanic

Hello

The engine and the automatic transmission in this vehicle are computer controlled and in most cases when a fault occurs a fault code is stored in the memory of the computer control module. There are exception to this, such as the Mass Airflow Meter and fuel pressure problems. What must be done is to have all the basic testing done such as a scan of the system for fault codes as well as a check with a live data scanner tool for engine functions that are not within range of normal, a trained technician is required to know what is correct and what isn't, then based on careful diagnostics done from a factory repair manual the correct part is replaced or the wiring repaired or the computer replaced (known as the PCM), which is very rarely the problem. Other basic checks must be done as well such as mechanical problems with the engine as well as engine state of tune and mileage on the engine. The transmission can have mechanical issues as well such as no gear engagement at all or a failed pump or other pressure related problems.

could be the auto shutdown relay not staying ingauged , the pcm controls this funchion and with the gauge reading empity its telling the pcm to shut down once it reaches a certion level if it has the built in safty prams in the pcm unit , first things first if the check eng light is on it needs to be scaned to find out what the code is and go from there ..

IF there is no external leaks then the master cylinder must have failed

Check your sensor on the rear end of the truck sometimes they get degree in them and it will cause this. It is directly ontop of the gear housing

The owners manual should contain this information. If it does not, then get a service manual from an autoparts store. Relay itself should be in the engine compartment in a fuse/relay box. The relay may be a dealer only item as they generally do not go bad. If the problem is that the compressor does not engage the clutch on the pulley, that can also be caused by the senors in the system. Most usually this means that there is little or no Freon in the system. You can pick up an AC charging kit at any autoparts store. If it is empty, it most likely means there is a leak. Make sure your put in oil if it is empty. Autoparts stores will also have leak finders to help trace / find where the leak is occurring.Best of luck,Jim