INSTALLATION Manual Stage 1 Shift Enhancer Applications GM Duramax w/ auto trans ‘01-’05 Rapid Power Part # 153001
TABLE OF CONTENTS INTRODUCTION Get ready for greatly improved shift over stock shifting, this stage 1 shift enhancer will give you a noticeably better shift with a more positive engage. Before begining installation be sure that the truck has sat long enough for the transmission to completely cool down. TABLE OF CONTENTS INTRODUCTION................................................................................................pg. 1 Parts Included.............................................................
Parts Parts included: Contents: • Yellow Springs (2) • Trim Valve A w/rib • Trim Valve B • 1/8” Drill Dit The Springs: The two springs included with this kit will replace two of the stock springs that are in the transmission valve body. Trim Valve A w/Rib: This trim valve will replace the stock vavle. Trim Valve A is unique, notice that it has a little rib in the center. It is very important not to mix up Trim Valve A with Trim Valve B. Trim Valve B: This trim valve does not have an ribs.
Removing Valve Body Removing the Tranmission Valve Body Important: When dismantling the valve body be careful to store all of the parts in a safe place to prevent them from being lost. It is also very important to keep all the parts clean. 1. Remove the tranmission pan plug and drain all the transmission oil from the pan. 2. Remove the tranmission oil filter. 3. Un-bolt the valve body from the transmission and remove it from the vehicle. 4.
Removing Valve Body 6. Remove the plate that secures the solenoids shown in picture #3. Picture 3 7. Remove all the remaining bolts that hold the valve body together and dismantle it. When separating the valve body pull evenly on each side being carefull not to break the attaching dowles. Do not use any pry bars or tools to separate the valve body. Picture 4 8. You now have the valve body completely dismantled and are ready to start the modifications.
Changing Valves Valve body modifications There are two major modifications, the first is to swap out the trim valves and place springs in front of the trim valves before replacing them. It is a good idea to first full swap out the A Trim side and replace it before starting on the B Trim side to reduce the chance of loosing parts or mixing things up. The second is to drill out two holes in the separtor plate to supply more oil. 1. Remove the A Trim solenoid and the 2 valves and 2 springs. 2.
Changing Vavles 6.See the Separator Plate Drilling diagram to see where to drill out the two holes, then use the 1/8th drill bit that is included with the kit to drill out those two holes. Separator Plate Drilling Diagram 7. Finally reassemble the valve body and then install back onto the transmission. Torque the bolts that connect the valve body to the transmission to 8 ft/lbs. VALVE BODY ASSEMBLY: When bolting the valve body back up to the transmission, torque all the bolts to 8 ft/lbs.
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