check all fuses. first!!!
then
scan the PCM, <<<< stated here and world wide 1million + times.
OK the dash cluster has s cute PRNDL Display
and this display is acting pure wrong that means PRNDL is failing
there are 3 technologies here (yours is last one.)
- old cars have PRNLD switch bad.
- or PRNDL on box works, but the TCM sets the gear you selected
- but the box reads back wrong (solenoid read back or pressure switches wrong)
or the IP cluster comms are failing.
i will now read the manual to you, SM service manual
and no engine told by you, (hard nut that)
4R70W , has in fact the pressure feed back sensors in the box
with EPC, it PCM tunes the pressure called line main.
so the PCM reads back what you selected
then if the pressure sensors read wrong, the display shows wrong
it means the PCM In not happy with this transmission
and only scanned it to find out why it is not happy is the only clues and cures.
and this
digital trans range
DTR sensor completes start crank circuit with transmission in Park and
Neutral, reversing lamp circuit in Reverse, and neutral sense cir-
cuit (4x4 only) in Neutral.
DTR sensor also opens/closes a set of
four switches monitored by PCM to determine position of manual
lever (P, R, N, D, 2, 1)
when DTR reads wrong so will the cluster cute PRNDL indiector.
my guess to you are ignoring the CEL, check engine lamp.
driving.? (check power train lamp it really means)
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