P0872 GMC – Pressure Switch Solenoid ‘E’ Circuit Low/Stuck Closed

P0872 GMC Possible Symptoms

Engine Light ON (or Service Engine Soon Warning Light),Transmission will not shift gears.

P0872 GMC Possible Causes

Faulty Pressure Switch Solenoid ‘E’,Pressure Switch Solenoid ‘E’ harness is open or shorted,Pressure Switch Solenoid ‘E’ circuit poor electrical connection

P0872 GMC Description

The pressure switch manifold (PSM) is a multiple-switch assembly made up of three normally open (N/O) and one normally closed (N/C) pressure switches. The E pressure switch monitors E shift valve positioning and relays it to the transmission control module (TCM). When E pressure switch is in the open state, E shift valve should be in the unstroked position.