Sierra 3500 4WD V8-8.1L VIN G (2006)
4. Remove the reverse signal pipe (2) from the main valve body (3).
5. Remove the TFP switch (1) from the main valve body (3).
6. Remove the 2 bolts (1) retaining the modulated main pressure solenoid valve body (2).
7. Remove the modulated main pressure solenoid valve body assembly (2) and six speed tube.
8. Remove the six speed tube from the modulated main pressure solenoid valve body.
9. Remove the modulated main pressure solenoid retainer (5) from the bottom of the valve body (2).
10. Remove the modulated main pressure (MAIN MOD) solenoid (6).
11. Remove the 2 O-rings (3 and 4) from the MAIN MOD solenoid (6).
