Common questions

Are you looking for Allison at transmission troubleshooting help?

Are you looking for Allison at transmission troubleshooting help?

Are you looking for ALLISON AT transmission troubleshooting help, ALLISON AT rebuilding tips, ALLISON AT technical service bulletins, ALLISON AT diagnostics or technical information? Do you just have ALLISON AT questions and need some answers? Do you have diagnostic trouble codes (DTC’s) and need ALLISON AT troubleshooting information?

How to change the transmission filter on a C4500 Allison?

With the engine off add 2L of new fluid back into the pan via the funnel and empty the old ATF that has flowed into the dump container. Once again start the engine, only this time with your foot on the brake and the emergency brake engaged, cycle through the gears pausing for one second in each gear.

What does code p1875 mean on Allison Transmission?

ALLISON AT Code (DTC) P1875 Transmission Automatic Hall Effect Sensor Power Circuit Short To Battery / 4WD Low Switch Circuit Electrical ALLISON AT Code (DTC) P1876 Transmission Transfer Case 2-Wheel Drive Solenoid Circuit Failure

What causes transmission problems on GMC Kodiak Allison?

The Allison repair tech showed me the tiny piece of metal that caused all the problems. It was about the size of half a small sewing needle. The tech said they had seen a fair number of tannys come in with intermittent shifting problems that went away but came back later. It took a night shift tech to find the problem.

Where can I get an Allison Transmission serviced?

Find an Allison authorized service facility near you. Learn how you can ensure the performance and durability of your Allison transmission. Allison Transmission is the world’s largest manufacturer of fully automatic commercial-duty transmissions, and is a leader in hybrid-propulsion systems.

The Allison repair tech showed me the tiny piece of metal that caused all the problems. It was about the size of half a small sewing needle. The tech said they had seen a fair number of tannys come in with intermittent shifting problems that went away but came back later. It took a night shift tech to find the problem.

Where is the TCM on an Allison flatdeck?

A nother thing to check is the tcm (transmission control module) located under hood right by ecm. I had an incident where plugs had slightly loosened up and my 05 flatdeck would not shift out of 1 st gear.

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Ruth Doyle