B&M 70365 TRANSPAK - Manual (Page 2)

2
Special Instructions
Metric tools are required to
disassemble and assemble the
4L60E, see tool list at rear of this
booklet. Choose a clean, dirt and dust
free place to work on your 4L60E.
Dirt, loose threads from rags and
pieces of old gaskets can become
lodged in valve bores and/or
separator plate orifices and cause the
transmission to malfunction. If you do
not have a solvent cleaning setup
available, get several cans of WD40
to clean your parts.
Warning: Almost all cleaning
solvents pose a threat of fumes and
or fire. Make sure to use cleaning
solvents only in a well ventilated
location away from any source of
ignition such as open flames, sparks,
hot water heaters, etc.
Be careful with the internal and
external wiring harness. Wiring and/
or connectors are easily damaged
and difficult to troubleshoot if they are
damaged.
VERY IMPORTANT
Use petroleum jelly to hold
checkballs and gaskets in place
during installation. DO NOT use any
kind of wheel bearing grease to hold
checkballs in place, these greases do
not melt or mix readily with ATF and
can block shift and pressure con-trol
solenoid feed circuit filters and
orifices. Causing erratic shifts and
potentially serious transmission
damage because of low line
pressure.
Cautions about PCM.
The MIL (Malfunction Indicator Light
or Check Engine Light) may be
illuminated (turned ON) if the vehicle
is started and any of the transmission
electrical connectors are
disconnected or has wires that are
broken or, have been pinched and/
or shorted. The MIL is pro-grammed
to illuminate whenever a system
(engine or transmission) component
malfunctions and at the same time a
DTC (Diagnostic Trouble Code) is set
in the PCM. You may have to refer to
your owners manual, a GM service
manual or visit a GM dealer to
determine the source of the
malfunction(s) that cause(d) any DTC
codes to be set and the required
remedy. Make sure your engine is in
good tune and any problems related
to set trouble codes are repaired
BEFORE attempting to install your
B&M Shift Improver Kit.
Do Not attempt to jumper the Data
Link connector to read a DTC from
the PCM in 1993 / 1995 vehicles un-til
you have checked your owners
manual, or GM service manual, or
verified with your GM dealer that the
particular PCM in your vehicle allows
jumpering the data link. Jumpering
the data link connector to read DTC’s
is not possible on any 1996 or later
OBD II vehicle and can damage the
PCM and result in a very expensive
repair bill. Except for some 1993 to
1995 PCM’s all others will require the
use of a diagnostic scanner to read.
Some DTC codes are “hard codes”
and may require a diagnostic
scan-ner to turn them off after the
malfunc-tion, which set the DTC, has
been repaired.
If electrical power to the transmission
is cut or the PCM fails the 4L60E will
operate in “limp home” mode, if this
happens, you will only have Reverse
and Drive 2 range availble.
Before installing your Shift Improver Kit there are several other B&M
products you may wish to consider:
TRICK SHIFT PERFORMANCE
ATF. Trick Shift performance
Automatic Transmission Fluid is the
industry’s only real perfor-mance
ATF. A specially blended oil
formulated with foam inhibitors,
ex-treme pressure agents and shift
improvers, this fluid assures
protection while delivering the fastest
pos-sible shifts. You literally “Pour in
performance”. Available at your B&M
dealer.
TRANSMISSION OIL COOLER. We
feel that it is very important that every
vehicle used in heavy duty or high
performance application should have
an auxiliary oil cooler. Excessive heat
is the primary cause of transmission
failures, an and auxiliary oil cooler is
an inexpensive safeguard against
overheating and failure. B&M offers
a wide range of transmission coolers
to suit every need and are available
at your B&M dealer.
DRAIN PLUG KIT 80250. 4L60E
transmission oil pans do not come
from the factory equipped with drain
plugs. The B&M Drain plug kit is
inexpensive and easy to install. It
eliminates the mess when chang-ing
fluid or on pan removal.
TEMPERATURE GAUGE KIT
80212. Most transmission and
Transmission ID Pad
4 JY D XXXX
Year Model Model designator D=4L60E