1997 Grand Prix Supercharged. Shudder under load when warm. Pass airbag clicking.....?

if You put the original tires size the air bag will act normal again..

if you decide to unplug the air bag, them the computer will give You a code and a buzzer in the dash.

to remove the code and the buzzer in the dash. You have to disconnect the impact sensors(one in the rear, one in the front)

once You disconnect the the two impact sensor the engine will not start,You have to re routing the wiring for fuel pump

make direct to battery and put a fuse in that wire.

once you have re wire the fuel pump, then the computer will give You another code and a new buzzer.... that code is refer to oil sensor sending bad reading cut the oil sensor wire and let it hanging.

since ,You have not oil pressure reading,the computer will give a code in the dash board.that code refer to transmission.

because, when the computer is not reading oil pressure .she believe that the engine is off, then... do not send signals for shifting.

go to the computer and cut the yellow, blue,brown,purple colors

of wiring. use electrical tapes to protect the already cut wires from corrosion

if You feel that I am pulling Your leg.

yes ,You are right in that one

in disconnecting the air bag Your are wrong.

first make sure the spark plug is clean and gapped properly and check ohms in spark plug wire (if it has them). you need to get rid of cylinder miss first. try those and get back to us