I have a 2002 corvette with a swapped LS3 and a LS2 throttle body that goes into limp mode after about 5 hard laps, its a dedicated track car. I was getting codes: P1220, P1221, P1515. Car ran great up to it getting hot. Oil temps 250 and water temps 201.

But I want to run a TB test procedure on it.

Does anyone have the procedure, drive by wire, using a multimeter with Ohms and volts parameters? THX!