648g2 park brake stuck

[Trav the ax]

Yesterday I tested the park brake coil which is gd cleaned and blew out the spool and sprayed the valve out with cleaner reinstalled with no luck. I'm going o che k the white wire eon the starter later today. I noticed a break in the plastic of a wire running to park brake and differential valve could this be ot or any other deas out there 

[kiko]

Sounds like you have lost the transmission pump or have a suction issue.  Could also be that white wire to starter it is the ground f9r the park brake relay when not in the start position..

[Trav the ax]

Thanks for reply if it was the wires off starter would I still have power at the park brake solenoid when I tested with a meter

[Trav the ax]

Also when tested the valve oil shot out both places would it still for that if it was a pump f327 Ia a code I'm getting 

[Trav the ax]

What would happen. If the pressure switch  is bad how do I test it