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P1860 Diagnostic Trouble Code Discussion for March 2011

TCC PWM Solenoid Circuit Malfunction


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Trouble Ticket Help Requests for DTC P1860
Help Request Posted
1997 GMC K1500 Suburban 5.7L MIL Lamp on, Solenoids,tcc affect VIN: 1GKEK13R1V
P1860: TCM PWM Solenoid Circuit Malfunction. This vehicle shows speedo pegged at 100 mph odometer inoperative and no tach signal, upon shifting into drive vehicle struggles to move if put in low vehicle moves but slowly then operates as if kicking in, believe need to pull dash and speedo to check resisto...
March 16, 2011