Quote:
Originally Posted by aafc
When i installed the auto trans in my car i used an after market electronic
ratio adapter between the vehicle speed sensor and ecm. the unit has 4 wires
black to ground red to +12v white output from vss and blue input to
ecm.(see FSM section 8A-33-0). The yellow wire is cut and the ratio adapter
wired in place. This unit was install back in Aug. 2004 when i started the auto
install. NOTE! only the yellow is connected to the ratio adapater per cust
help desk.Also the vss is called TOSS (transmission output speed sensor)
from the compushift wiring harness. so i'am not using the permanent magnet
generator shown in the FSM sec 8A-33-0.
hope this info helps.
John
1990 white/black 2546
one of a few auto 4l80E eq ZR-1's
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My bad there John; I mistook 'raito' adapter for 'radio' adapter; not gearing ratio.
And now I'm curious what emmvette had goin' on there...