Having problems with your 2001 GMC Sierra 2500HD ?

Allison tranny shifts

\015 Is it normal on the allison transmission on my 03 gmc 2500 hd with the 8.1 that it seems like it wont dowshift when i feel it needs to. I have to practicly have to put pedal to the floor for it to dowshift. Is this normal\015 Posted / edited by AnonymousUser on : 27-09-2021

Answers :

No, have you changed the spin-on filter om the transmission yet? This may be the only trouble. I hope this helps. Good luck.
Repair Help & Product Troubleshooting for 2001 GMC Sierra 2500HD

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