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What are the problems with the u0100 OBD II?

What are the problems with the u0100 OBD II?

1 A faulty PCM 2 A problem with the control module circuit 3 A problem with the CAN bus

What causes hard shift condition in Chevy Silverado?

The video shows the replacement of the 1-2 shift accumulator after the pin is worn allowing pressure blow by of transmission fluid, causing hard shift condition that does not really get worse over time. Loading…

What causes a Chevy Silverado to throw an OBDII code?

Faulty Charcoal Canister – The charcoal canister is often the cause of P0446. Fuel Tank Sending Unit – It is possible for the fuel tank sending unit to go bad. This can mess with line pressure and throw the code.

What does the code u0100 mean on a car?

Code U0100 stands for Lost Communication with ECM/PCM. The powertrain control module (PCM) is the computer responsible for engine management. Like the other computers (known as modules) onboard your vehicle, the PCM communicates over a bus.

Can a Chevy Silverado shift from 2nd to 3rd?

No 1st or 4th, shift 2nd to 3rd by itself when put in D or OD and locks converter: Goes into gear but sluggish like brakes are on, can manually shift to 2nd to get moving, then put in OD and truck shift 3rd as well as 4th are OK. Also, torque convertor locks up.

What happens if there is no 3rd gear on a 4L60E?

Without being able to lock, it won’t be able to facilitate the transfer of energy to the upper gears and the transmission will remain in 2nd gear. Your 4L60E has a set of clutches that work with both 3’rd and 4’th gear. It’s referred to as the 3-4 clutch pack. A bad 3-4 clutch pack can certainly cause the 3’rd and 4’th gear to stop working.

Can a bad clutch pack cause 3rd gear to stop working?

It’s referred to as the 3-4 clutch pack. A bad 3-4 clutch pack can certainly cause the 3’rd and 4’th gear to stop working. In fact, once the transmission “shifts” into third, it’ll feel like you lost the whole thing. You can shift into second to get yourself home. Just be careful on the highway.

Is the Chevy Silverado GMT800 supposed to shift?

No need to panic yet. This article applies to the Chevrolet Silverado GMT800 (1999-2006). Your transmission is just supposed to shift and leave you alone. When it fails to do so, you naturally get upset either because of the trouble you are not looking for or the fear of how much the fix may cost.

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Ruth Doyle