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Possible Causes RELATED TCM POWER INPUT DTCS PRESENT(T20) LR SOLENOID CONTROL CIRCUIT SHORT TO OTHER CIRCUITS(T20) LR SOLENOID CONTROL CIRCUIT OPEN(T20) LR SOLENOID CONTROL CIRCUIT SHORT TO GROUNDTRANSMISSION SOLENOID/TRS ASSEMBLYPOWERTRAIN CONTROL MODULE
if you replaced the pack then its going to be a wiring issue for sure.
classic p0750 symptom. The Low Reverse (LR) is monitored at initially power-up, then every 10 seconds thereafter. The solenoids will also be tested immediately after a gear ratio or pressure switch error is detected.
thats why you need to check the wiring
checking in to see how its going
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