02-07-30-052-I

File in Section:
Service Bulletin
Bulletin No.:
Date:
07 - Transmission/Transaxle
02-07-30-052I
June, 2013
INFORMATION
Subject:
Automatic Transmission Oil Cooler Flow Test Essential Tool J-45096 TransFlow ®
Models:
2011 and Prior GM Passenger Cars and Light Duty Trucks
2003-2010 HUMMER H2
2006-2010 HUMMER H3
Equipped with Automatic Transmission/Transaxle including Allison ® Transmissions
Attention: For model years 2012 and later, refer to SI for ‘Transmission Fluid Cooler Flushing and
Flow Test’ procedures.
This bulletin is being revised to remove two Important statements and update the Important
statement at the beginning of the Warranty Information section. Please discard Corporate
Bulletin Number 02-07-30-052H.
The J-45096 transmission oil cooling system flow test
tool replaces the current tool J-35944-A. J-45096 is a
self-contained unit utilizing a 12-volt flow meter, shop
air supply and DEXRON ® VI automatic transmission
fluid (ATF). In the flush mode, transmission fluid is
cycled through the transmission oil cooling system.
High-pressure air is automatically injected into the fluid
stream adding agitation to the ATF oil to enhance the
removal of contaminated ATF oil and debris. In the flow
mode, an electronic flow meter is used to measure the
flow capability of the ATF oil cooling system. A digital
display indicates the ATF oil flow rate in gallons per
minute (GPM) along with the amount of ATF oil in the
supply vessel, supply vessel ATF oil temperature,
machine cycles and the operating mode. In the flush
mode, transmission fluid is cycled through the
transmission oil cooling system. High-pressure air is
automatically injected into the fluid stream adding
agitation to the ATF oil to enhance the removal of
contaminated ATF oil and debris. The supply oil vessel
has 30 L (32 qt) capacity and the waste oil vessel has
32 L (34 qt) capacity. The waste oil vessel is
constructed of a translucent composite material that
allows the user to easily identify the oil level. The waste
oil vessel can accommodate vacuum evacuation and
gravity draining. In the code mode, a random,
encrypted code is generated that can be used for
verification of flow test results.
Current essential cooler line adapters are used to
connect the J-45096 to the automatic transmission oil
cooler lines that allows the J- 45096 to adapt to General
Motors passenger cars and light duty trucks, current
and past models (except the Pontiac Vibe, Wave and
Chevrolet Aveo).
Copyright 2013 General Motors LLC. All Rights Reserved.
The tool may be adapted for use on the Pontiac Vibe,
Wave and Chevrolet Aveo by dealership personnel with
a barbed hose connector and rubber hose obtained
locally. The Vibe's/Wave's/Aveo's transmission has a
transmission oil requirement that is slightly different
from DEXRON® VI ATF. However, flow checking and
flushing the cooler with DEXRON ® VI automatic
transmission fluid is an acceptable service procedure.
Very little fluid remains in the cooler after the flow check
and flush procedure and the residual DEXRON ® VI ATF
in the cooler is compatible with the Vibe's/Wave's/
Aveo's transmission fluid.
Notice: Insufficient oil flow through the ATF oil cooling
system will cause premature transmission failure. The
required minimum ATF oil flow rate reading is directly
related to the supply oil temperature. Refer to the flow
rate chart in SI for the oil flow rate specification based
on the temperature of the ATF in the supply vessel.
Helpful Hints for Maintaining the Temperature at or
above 18°C (65°F)
Important:
• The temperature of the supply vessel oil must be
18°C (65°F) or greater for the J-45096 to operate.
It is recommended to store the J-45096 in an area
of the dealership where the room temperature
remains at or above 18°C (65°F) when not in use.
• Do not attempt to increase the fluid temperature in
the Transflow® machine with an engine oil
dipstick, or any other immersion type heater. The
Transflow® machine has a check valve in the
Page 2
June, 2013
supply reservoir. Inserting a heater will damage
the check valve and the subsequent repair
expense would be the dealer's responsibility.
• A heater blanket, P/N J-45096-10, is available for
the Transflow® transmission cooling system
flushing tool. This heater fastens around the
Transflow® internal supply vessel and runs on
110 volts AC. The heater will warm the ATF in the
supply vessel to at least 18°C (65°F) and has a
thermostat to hold a constant temperature.
Store the Transmission Cooling System Service Tool,
J-45096, Transflow® machine in a room where the
temperature is maintained at or above 18°C (65°F).
Keep the ATF level in the reservoir low when the
Transmission Cooling System Service Tool, J-45096,
Transflow®, is not in use. Store several gallons of oil in
an area where the temperature is maintained at or
above 18°C (65°F). Fill the reservoir of the J-45096 as
needed before using the machine on each repair.
With the ATF in a tightly sealed container, place the
container in a tub of hot water for a period of time. Then
pour the ATF into the reservoir. This method works best
with a low fluid level in the reservoir.
Place the Transflow® machine in the direct sunlight with
the cabinet door open to expose the reservoir to the
rays of the warm sun.
Table 1: Direction of Fluid Flow in Oil
Cooler Pipes at Transmission
Transmission
Oil Cooler Feed
(Exiting
Transmission)
Oil Cooler
Return (Entering
Transmission)
200-4R
top connector
bottom connector
3L30 (180)
front connector
rear connector
3L80 (400)
bottom connector
top connector
4L30-E
front connector
rear connector
4L60 (700-R4)
bottom connector
top connector
4L60-E
bottom connector
(may require
J-35944-200)
top connector
(may require
J-35944-200)
4L80-E
front connector
(may require
J-35944-200)
rear connector
(may require
J-35944-200)
3T40
bottom connector
top connector
4T40-E
top connector
(requires
J-35944-440)
bottom connector
(requires
J-35944-440)
4T60 (440-T4/F7)
vertical (top)
connector
horizontal
(bottom)
connector
4T60-E
vertical (top)
connector
horizontal
(bottom)
connector
4T65-E
vertical (top)
connector
horizontal
(bottom)
connector
4T80-E
front connector
(case cover)
rear
connector (case)
Allison
lower (forward)
connector
top (rear)
connector
Bulletin No.: 02-07-30-052I
Table 1: Direction of Fluid Flow in Oil
Cooler Pipes at Transmission (cont'd)
Transmission
Oil Cooler Feed
(Exiting
Transmission)
Oil Cooler
Return (Entering
Transmission)
Aisin (AF33-5)
top connector
bottom connector
(requires
J-35944-440)
Aisin (AF17)
top connector
bottom connector
MU4/MU5
top connector
bottom connector
5L50E
bottom connector
top connector
6T70/75
top/front
connector
top/rear connector
6T40/45
top/front
connector
rear connector
6L50/80/90
bottom connector
top connector
AF40-6
top connector
bottom connector
2ML70
front connector
side connector
Flow/Flush Test Procedure
Refer to SI for Automatic Transmission Oil Cooler
Flushing and Flow Test J-45096 for the appropriate
procedure.
Important: The J-45096 can be used to flush the
transmission oil cooler system on an Allison equipped
vehicle, but the flow meter should not be utilized. Refer
to SI for Automatic Transmission Oil Cooler Flushing
and Flow Test J-45096 for the appropriate flow check
procedure.
Machine Displays
After completion of the flow test and flush, the following
information is to be recorded on the repair order. This
information is displayed on the Transmission Cooling
System Service Tool, J-45096, Transflow ® machine
when the dial is in the code position.
• Tested flow rate (displayed in Gallons Per
Minute (GPM)
• Temperature (displayed is degrees Fahrenheit)
• Cycle number (a number)
• Seven (or eight) digit Alpha/Numeric flow code
(i.e. A10DFB2)
Warranty Information
Important: All Labor Operations that include removal
of the transmission from the vehicle to perform an
internal repair or torque converter replacement include
labor time to flow check and flush the transmission oil
cooler system. In car replacement of the transmission
control module and control valve assembly or valve
body or repairs for leaks such as the torque converter
or output seals and gaskets do not require the oil cooler
system to be flow checked and flushed and do not
include time in the labor operation to do so.
Performing a transmission oil cooling system flow test
and flush will use between 4.7-7.5 L (5-8 qts) of
DEXRON®VI transmission fluid. The amount of
transmission fluid (ATF), (DEXRON ®VI) (fluid), that is to
be charged for the flush portion of the repair should not
Bulletin No.: 02-07-30-052I
June, 2013
exceed the allowable charge for 7.5 L (2 gal) of fluid.
This expense should be shown in the Parts Section of
the warranty claim document.
The Seven (or eight) digit Alpha/Numeric flow code, i.e.
A10DFB2, "MUST" be written on the job card, entered
in the warranty claim labor operation Flush Code
additional field (when available) and placed in the
Page 3
comments section of the warranty claim. Any repair that
requires the technician to contact the Product Quality
Center (PQC) must also include the seven digit flow
code. The agent will request the seven digit flow code
and add the information to the PQC case prior to
providing authorization for the warranty claim.
GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these
technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper
service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do a
job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your
vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the
information.
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