P0756 GMC safari slipping and hesitating at 45mph?

Question

1998 gmc safari 4.3l slipping at 45 mph. Codes 751,753,756. Diagnosis ideas? Or does it need to be taken apart and inspected? Dirty fluid too Shifts ok otherwise. ???

Answer 1

P0756 2-3 shift solenoid valve performance

P0751 1-2 shift solenoid valve performance

P0753 1-2 shift solenoid shift solenoid electrical

Inspect the fuse condition for the shift solenoid in the engine fuse box listed as TRANS fuse # 20. If the fuse and power is good  The shift solenoid is located at the valve body should be replaced.