K 3500 Truck 4WD V8-6.6L DSL Turbo VIN 1 (2001)
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Improper transmission end play
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Shop comebacks
Note:
Failure to diagnose and repair the cause of the driveline imbalance may result in a repeat cracked extension housing.
Important:
When performing this repair, the following steps must be taken to reduce the possibility of setting a DTC P0872 after the repair.
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Clean the transmission oil pan thoroughly.
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Replace the fluid filter located in the oil pan with P/N 29537965.
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Replace the spin-on fluid filter with P/N 29539579.
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Flush the transmission oil cooler and lines using J 45096.
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When the transmission is refilled, make sure that the oil level is in the "cold" range with the engine running and the transmission in Park. Do not
shift from Park into a forward or reverse range until the oil is in this "cold" range.
Important:
After completing this modification, the transmission control module (TCM) shift adapts must be relearned for proper transmission operation. For MY
2001 using the Tech 2(R), select Special Functions (F2), Transmission Output Controls (F1), Preset All Tap Cells, Disconnect the Tech 2(R). This
action will reset all clutch adaptives and requires the vehicle to be driven. For MYs 2002-2003, follow the procedure outlined in Corporate Bulletin
Number 02-07-30-032A to quickly relearn the transmission shift adapts.
Tools Required
The following special tools will be required for the completion of the repair.
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J 46695 Digital Depth Micrometer
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2 Guide Pins (M10 X 1.5 mm, 75 mm long bolts with the heads removed, locally obtained)
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J 5959 Dial Indicator Set
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J 21366 Converter Holding Strap
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J 44723 Transmission Adapter Plate
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J 24446 Rear Bearing Installer
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J 43769 Spanner Nut Wrench 4WD
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J 3685 TransJel(TM)
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J 46409 - Torque Converter Lifting Handles
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6 M10 X 1.5 Bolts (38 mm (1-1/2)
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J 43773 Spring Compressor
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J 43772 Seal Installer
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J 45096 Transflow(R) Transmission Cooling System Service Tool
Caution:
The Allison(R) 1000 Series (M74) transmission has a dry weight of approximately 150 kg (330 lbs). The torque converter has a dry weight of
approximately 29 kg (63 lbs).
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Use caution when removing, installing, servicing or moving the transmission in order to prevent personal injury.
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Get assistance when lifting the transmission. A hoist is the preferred lifting device. Ensure that the lifting device is adequate to support the
transmission.
