Medic Posted October 18, 2014 Report Share Posted October 18, 2014 Hello everyone, I am trying to swap my 4T60E from my '93 Bonneville to a '94 Park Avenue. The Buick's transmission housing broke just before the differential so I cannot rebuild it and I am scrapping/parting out my Bonneville. Since they both have the 3800 coupled to a 4T60E I thought it would be a straight forward bolt-in swap but the wires are different colors and the plugs are different colors, one grey and the other is light blue. So two questions I am hoping someone can help with: 1: Can I rearrange the pins in the male plug to work? or 2: Can I swap the transmissions internal wiring harness to make it work? Any help will be greatly appreciated. Quote Link to comment Share on other sites More sharing options...
Nas Escobar Posted October 18, 2014 Report Share Posted October 18, 2014 As far as I know, 91-93 are one set of transmissions, 94-95 are another and 96-97 are another, all vary in design despite being put in the same cars. The main change between a 93 and a 94 is the PWM is now electric instead of mechanical. I beleive the TCC solenoid also changes. If your car is a 94, you're better off getting a 95 trans out of another H body. Car-part.com is very useful in that matter. Quote Link to comment Share on other sites More sharing options...
RobertISaar Posted October 18, 2014 Report Share Posted October 18, 2014 what do the tags on each have for a code? should be a number(model year), then 3 letters after it. Quote Link to comment Share on other sites More sharing options...
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