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INSTALLATION MANUAL
Applications Rapid Power Part #
GM Duramax w/ auto trans ‘01-’05 153001
Stage 1 Shift Enhancer
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1
TROUBLESHOOTING:
Technical support is available by calling 866-bullydog
(866-285-5936).
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 ............................................................................................PG. 2
REMOVING VALVE BODY..............................................................................PGS. 34
CHANGING VALVES .....................................................................................PGS. 56
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2
Parts included:
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.
1/8” DRILL BIT: This is a standard o the shelf metal drill bit, you can replace it with a drill bit from a local
hardware store or from your own collection if it is lost.
Parts
THE MODULE BOX
Contents:
• Yellow Springs (2)
• Trim Valve A w/rib
• Trim Valve B
• 1/8” Drill Dit
Trim Valve A w/rib
Trim Valve B