No overdrive, no cruise

Question edited for typos and add some spaces..
Question moved to model category.

You just fit a Bypass Pulley. This takes the place of the AC compressor, the belt and routing stay the same.

https://www.google.com/search?q=1998+buick+park+avenue+ultra+bypass+air+compressor

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BCM ... Body Control Module

Installayion expertise required to profile the BCM INTO THE VEHICLE

http://www.rockauto.com/en/catalog/buick,1997,park+avenue,3.8l+v6+supercharged,1019887,electrical,body+control+module+%28bcm%29,2888


1997 BUICK PARK AVENUE 3 8L V6 Supercharged Body Control Module BCM...

No. While the engine would probably bolt right in, there are two entirely different engine control systems for the two models. The '97 engine has OBD-II controls- more and different sensors and controllers, while the '94 engine has the less sophisticated OBD-1 system. They are not interchangeable. An engine from a '94 or '95 park avenue is your best choice. Any from 1996 onward is OBD-II (On Board Diagnostics, second generation).

you dont,you get inside the door to change motor

The code indicates the TPS is still bad and the code is usually right, but it could be a wiring issue at the TPS connector or less likely a computer issue.
To test the TPS circuit, you need to check voltage and ground from the ECM - 5v is the normal reading between the ECM reference circuit and the ECM ground circuit at the TPS connector. Checking the TPS signal circuit to the ECM requires monitoring the TPS signal on a scan tool while jumping the 5v reference and the signal circuits. The TPS reading should go from high when the circuit is jumpered to low when the jumper is removed.

You need a new turn signal flasher.

Make sure the battery cables are clean and tight on the battery. Check to see if the wires to the starter are tight. Try starting it in neutral to make sure the safety switch is being make. Also hold it up into park and try.

time 4 a mechanic aamco time

You have a problem with a baffle controller in the plentum(blower duct);
ck the heater fuses in the box under the driver dash and also ck the electronic control center box, (under hood I think) and look for a heater/blower relay and try to swap it with another relay that may be indentical just for test ;and replace as necessary. I think the baffle controls are electrical because they switch properly in my '91 without the motor running, ie, not vacuum controlled.
good luck.

It sounds like one of the ignition wires is breaking down or possibly a coil. Get a squirt bottle of water and spray a mist on the plug wires and coil to see if a spark starts to jump out. Probably just a bad plug wire.