you sound like guy that works FSM free,?
no books. why do that ,? (pain)
i guess you get scan codes. and above is wrong. P0703. is it.?
post the full codes, all of them all DTCs stored.
then look them up in the FSM and what does it says.
it tells you, to do more tests. to find true cause.
my guess, you never said
car drives prefect,
the CEL glows, or the scan tools shows MIL active.
the hold is for ice.
the hold prevents down shifts (dangerous) on ICE.
with most feature of the TCM (tranny brain) lots of failures
cross over. to shifting.
like engine overheated
brakes on or off.
traction. and ABS.
direction controls. (if present)
so stop ignoring those codes and fix what it told you to fix
fix the what is it, P0703...
the recall (sic) TSB TS-09-03129R
summary:Suzuki vehicles: automatic transmission shift lever is loose in the shift gate and/or ignition key cannot be removed. The transmission gear shift lever does not hold firmly to the left of the shift gage as expected.
and the 703, dont lie. it told you its fails and you ignored this fact.
it's bad, replace or recalibrate the switch.
and on newer cars the switch may need calibration after the replacement.
owning a Chapter 11 car company car is a PITA.
id sell it. i would and get a Toyota.