D4-G LGPCAC serial#0FDC00237 parking brake will not release to move tracks. replaced switch by throttle and replaced switch beside brake pedal and also replaced part on the housing of rear drive ....still nothing and parking brake light still on also noticed to that when I push down brake pedal another light lights up on dash ..gear with ! Inside it ..
First off I would do some pressure tests. test port number 3 is for the parking brake pressure which when the brake is off should be @330psi at idle If you do not see pressure there go to test ports 3 and 4 front and rear charge pressure At idle there should be @330psi if there is no pressure there then you most likely have lost the coupling between the engine and pumps If you do have pressure there then you either have no power going to the parking brake solenoid or you have a faulty solenoid.