OEM GMC Canyon Shift Solenoid

GMC Canyon Shift Solenoid Parts Questions & Experts Answers

• Shift Actuator
  15775841
  Q: How to service and repair the control and shift solenoids in a transmission on GMC Canyon?

  A: The maintenance process for control and shift solenoids starts with removing the transmission oil pan along with its filter. The removal of the Valve Body is only necessary for pressure control solenoid maintenance that requires taking out the 1-2 accumulator. You must disconnect all internal wiring harness electrical connectors from electrical components 1 through 6. First disconnect the pressure control solenoid (377) while keeping track of its original position and then take off the solenoid retainer (378) followed by the solenoid retainer bolt (364A). Next, you should take off both the Shift Solenoid retainers along with the actual solenoids from the 1-2 and 2-3 positions. Set the electrical connector side of all solenoids to face against the non-machined (cast) side of the Valve Body to avoid potential transmission case binding during installation. Follow the 1-2 and 2-3 Shift Solenoid (377) and retainer installation by adding the actuator feed limit valve (374) and spring (375), bore plug (376) along with retainer (395) and pressure control solenoid (377) to the unit. Secure the retaining bolt at 11 nm (97 lb in). Reinstall the 1-2 accumulator after reconnecting all internal wiring harness electrical connectors that control electrical components (1-6). Place the transmission oil pan while also installing its filter before adding dexron(R) vi transmission fluid to the fluid level specification. A scan tool must be used to reset transmission adaptive pressure (TAP) values which will remove all learned values before Engine Control Module (ECM) or powertrain control module (PCM) or transmission control module (TCM) learning process begins because resetting tap values influence transmission performance.