NMC-WOLLARD 2021Truax Blvd., Eau Claire, WI 54703, Phone (715) 835-3151, Fax (715) 835-6625
M100 Tow Tractor Manual No. 46052
DECEMBER 15, 2013
PAGE 182
CHAPTER 5 MANUFACTURER’S INFORMATION
GM 4L70 TRANSMISSION
© 2013 General Motors. All rights reserved
Transmission Replacement - General Overview
Removal Procedure
Warning: Refer to Battery
Disconnect Warning.
Caution: The drive plate
(flywheel) will not support a load.
None of the weight of the
transmission must be allowed to
rest on the drive plate during
removal or installation.
Caution: The transmission and
torque converter must be
removed and installed as an
assembly to prevent damage to
the front bushing or front oil seal.
Disconnect the battery negative
cable assembly from the battery
Raise the vehicle following the
manufacturer’s recommendations .
Support the vehicle with safety
stands.
Disconnect the range selector cable
from the transmission bracket and
from the range selector lever
Remove the transmission oil cooler
pipes. Refer to Transmission Fluid
Cooler Hose/Pipe Replacement.
Remove the rear propeller shaft.
Support the transmission with a
transmission jack.
Remove the transmission rear
support and insulator assembly
attaching bolts at the bottom rear of
Remove exhaust pipe, manifolds or
exhaust components as necessary
Remove the converter splash
shield
Mark the flywheel and the torque
converter alignment.