Alright, the wiring for the fuel gauge is different for the 96 and 97+ Bonnevilles, and I'm going to be using a 97 PCM for my transmission swap. For the 1996, the wire from the sending unit goes directly to the fuel gauge, and another wire taps into that one and runs to the PCM. For the 1997, the wire from the sending unit goes to the PCM, and then runs from the PCM to the gauge. The only reason the PCM needs to be connected to the fuel sending unit is to set a dummy light when you're low on fuel right? If that'* the case couldn't I just leave the wire connected directly to the gauge, and then leave the PCM without a sending unit connection? Any error lights and codes should be able to be edited out, and I should still have a working fuel gauge, just no dummy light. Gearheads, does it sound like a feasible plan?

Suppose it'* feasible...

Does anyone see another way around the wiring issue? Suggestions are welcome. I don't have the circuits needed to run the 97 setup built into my car, and if I need to connect to the PCM I'll need a new sending unit. The 96 uses a 0-90ohm, and the 97 uses a 40-240ohm so the PCM coding to reference the sending unit is different as well.

Can ask you question what is the reasoning for going with 97 rather then 96 transmisson? As 96 would have to rig the wiring

Price...he got a fantastic deal on a fully built up 97 that he should sell to me and take that moeny to get a new 96 trans

and the 97 PCM for the aftermarket support

96 has some, but not as readily available.

but the 96 tranny is more reliable than the 97

Not in this case. The 97 he has is already built up with every Intense option available.

The transmission'* actually from a '99 GTP, but I'm using a 97 PCM and harness because it'* the closest thing to the '96 setup that will control a 4t65. As far as why I chose to go with a 4t65 instead of rebuilding my 4t60, mostly price, and for tuning reasons. There'* just more support for a 97+ setup, and I'll have a lot of tuning to do this summer.