Interchangeable transmissions

Asked by Aug 29, 2017 at 07:49 PM about the 1999 GMC Sierra 1500 SL 4WD Extended Cab SB

Question type: Maintenance & Repair

I have a 1999 GMC Sierra 1500 Z71 4×4 extra cab.
My good friend has a 1986 Chevy Caprice 4 door.
Both vehicles have the Chevy 305 5.3L V8 engine
in them. We are trying to find out if the
transmission from my  truck will work in his car?

1 Answer

104,095

Nope, two totally different operating systems, the caprice is old GM OBD 1 and the truck is GM OBD 2. The two are not compatible.

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