Originally posted by Razor
New wiring for 12223861 or 213-1562
A=ground
B=signal
C= 5v
Heres the answer then..if you have a GN..its plug-n-play.
Letters are stamped on the sensor.
hmmmm...i bought a brand new gm 3 bar map sensor a couple years ago that never worked with my boost sensing harness

ken mosher checked my harness and said all was copacetic...i wonder if i got one of the old ones and the harness was made for the new?
any idea when gm made this change?always a possibility that an old one was still hanging around too..

