Silverado 1500 2WD V8-4.8L VIN V (2006)
Typically if the TCC enable solenoid is found to have a crack/fracture (2), it will be located parallel to the mold seam (1) as shown above.
Engineering investigation shows that TCC enable solenoids that are brown in color may exhibit the cracking / fracture condition.
Engineering investigation shows that TCC enable solenoids that are off-white in color do not exhibit the cracking / fracture condition.
Air check the TCC enable solenoid using J 44246 solenoid testing kit.
Install the TCC enable solenoid into bore # 2 of J 44246 as shown above.
While air is being applied to the solenoid through J 44246, coat the outside of the solenoid body with transmission fluid to help expose a possible
vertical crack in the molded part of the solenoid body. This crack may be very small and not visible without the use of ATF. Complete instructions for
the Shift Solenoid Leak Test can be found in SI Document ID # 856531.
If NO visual leaks are found in the TCC enable solenoid, refer to DTC P0894 in the appropriate SI Document. If visual leaks are found in the TCC
enable solenoid, continue with the next step.
Replace the TCC enable solenoid. Refer to Torque Converter Clutch Pulse Width Modulation (TCC PWM) Solenoid, TCC Solenoid, and Wiring
Harness in the appropriate SI Document.
Road test the vehicle.
