How do you reset a TCM Duramax?
To reset the TCM, I turn the key to the ON position, step on the accelerator pedal for 10 seconds, turn off the engine, release the accelerator pedal and wait 5 minutes for the engine to restart.
How do you reset an Allison transmission?
Allison Transmission Transmission Service Indicator Light Reset
- To reset the service indicator light.
- Turn the key on, do not start the engine.
- Move the shift selector to N-D-N-D-N-R-N, pausing briefly (less than 3 seconds) between each selector movement.
Why is the transmission not shifting on my Chevy Silverado?
Take a couple of easy steps to see why your truck is not shifting. 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.
Can a Chevy Silverado go from 1st to 4th shift?
Transmission is in Limp Home Mode or has no electrical power. Also, PCM has lots of error codes. 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.
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.
What kind of transmission does a Silverado 1500 have?
When diagnosing a shudder vibration condition on some 2016-2018 Silverado, Sierra; 2016-2020 Tahoe, Suburban, Yukon; 2019-2020 Silverado 1500 and Sierra 1500 models equipped with 5.3L V8 engine (RPO L82, L83, L84) and 6L80 6-speed transmission (RPO MYC), it’s critical to determine the source of the vibration in order to make the proper repairs.