96 to 97 trans swap - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 09-05-2008, 12:25 AM   #1
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Angry 96 to 97 trans swap

so I got a 97 with a burned up trans cheap and I had a wrecked 96 with a good trans soo I swapped the 96 motor, trans, computer and sub frame into the 97.I also used the complete engine and trans wiring harness from the 96 . Now when I drive it the trans slips starting out and has codes for TCC 1-2 sol and 2-3 sol . Is there anybody who has tried this or was it a waste of time
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Old 09-05-2008, 09:26 AM   #2
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I've done the reverse in a Riviera. The only differences were that there were 5 wires added to 97 from 96. Being that the pcm and wiring all resides in the engine bay on the Bonnie and that you swapped everything 100%, all should be well.

Things you can check would be the firewall connector for any differences in ign0, ign1 and ign2 as some of those may be 5+ versus 12+. Other than that I would be checking the connector at the trans, the ground on the back of the block near the oil filter adapter and all wiring for any pinching or visual hints. Maybe dropping the pan to change the fluid/service the filter.
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Old 09-05-2008, 01:17 PM   #3
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thanks for the reply. I will recheck my connections this weekend .Doyou know of any sites where I could find wiring diagrams for the bulk head connector?
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