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Daniel Wilson
Daniel Wilson,
Category: Medium and Heavy Trucks
Satisfied Customers: 4982
Experience:  Owner at DJ Wilson
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Have a problem with a 2000 gmc truck, 6500, 3126 cat diesel,

Customer Question

have a problem with a 2000 gmc truck, 6500, 3126 cat diesel, allason 545 transmission. diesel engine dies (but restarts ok) when switching gears from drive to reverse or park. engine must be warm. does not do this most of the time. only happens approx 10 percent of the time. please advise
Submitted: 11 months ago.
Category: Medium and Heavy Trucks
Expert:  Daniel Wilson replied 11 months ago.

Hi my name is***** you still need help with this? and if so are you getting any fault codes?

Customer: replied 11 months ago.
HI DAN.......YES, WE STILL NEED HELP. WHAT IS A FAULT CODE AND HOW DO WE CHECK IT. WE HAVE TOOLS AND GENERAL KNOWLEDGE AND OFTEN WORK ON THIS TRUCK, BUT WE CANT READ ANY CODES WITH OUR CODE ALALYZER. THINK CAT IS PROPRIATORY ? WHERE DO WE GO FROM HERE ??
Expert:  Daniel Wilson replied 11 months ago.

thanks for the update. Check if the check engine light is coming on and cycling with the key on as it should. If not check the inline fuse and wiring between the battery box and ECM for corrosion or poor connections. If okay and the check engine light comes on or stays on with the engine running it means you have an active fault code. This code will point to the circuit that has a problem requiring testing. Try to pull your codes with the flash code procedure. Key on with cruise off, hold the set/resume switch or diagnostic switch until the check engine light begins to flash. Count the flashes for the two digit code with a short pause in between each digit and a longer pause in between each code. This will repeat until the key switch is turned off. Let me know if successful in getting the codes this way and what you get for codes.

Expert:  Daniel Wilson replied 11 months ago.

Or you need a heavy truck scan tool to pull the codes. Cat uses Cat ET software but some generic truck scan tools will read the codes.

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