2005 buick lasaber 3.8 p1350,p0350

Question

car runs fine at low load settings but at WOT it do not upshift from first and act's like it's
hitting the rev limiter
I checked the ICM connector and cleaned the ICM base and mount

Answer 1

P1350 Ignition control system

P0350 Ignition coil control circuit

P0350 this is a code condition that control timing,this become a ignition timing error,a ICM replacement is the solution.this is where the ignition coil sits at.