89 gmc sierra 2500 350 auto trans?

[Michael m]

what trans come in this truck it is 2 wheel drive and has a 350 v8. also what trans will bolt right up and work? thanks

 

[Molson02536]

what trans come in this truck it is 2 wheel drive and has a 350 v8. also what trans will bolt right up and work? thanks

Believe the transmission that came in your Sierra was a 700R4, your going to have to find one from the years 1988 - 1992 Just make sure you have the right Boost valve installed for the proper transmission line pressure for the application your Sierra needs.

Good luck and keep us posted.