Transmission Page F-1
Page F-1
Section F
Transmission
ATTENTION
HSV vehicles are equipped with a Supplemental Restraint System (SRS). An SRS consists of seat belt pre-
tensioners (fitted to all front seats), a driver’s-side air bag, and a passenger’s-side air bag. Refer to
CAUTIONS, Section 12M, of the Holden Adventra AWD series Service Information before performing any
service operation on or around SRS components, the steering mechanism or wiring. Failure to follow the
CAUTIONS could result in perso n al in ju ry or unn ecessary SRS system repairs.
1 Purpose...................................................................................................................................................2
2 Transmission - General Information ....................................................................................................3
2.1 Automatic Transmission....................................................................................................................................... 3
General Description............................................................................................................................................... 3
2.2 HSV Avalanche AWD 270 Wagon ......................................................................................................................... 4
Pow ertrain Control Module (PCM)........................................................................................................................ 4
3 HSV Avalanche AWD Wagon Front Final Drive...................................................................................5
Transmission Page F-2
Page F-2
1 Purpose
The purpose of this bulletin is to provide information on the transmission assemblies fitted to the HSV Avalanche AWD
models. This information is designed to supplement the information contained in the Holden Adventra AWD series
Service Information, and details are given where differences occur between the HSV models and standard Holden
models. A series of instruction drawings describe the design changes and indicate specific part numbers, fitting
instructions and relevant notes for vehicle servicing.
NOTE
If specific technical data on a HSV model is not
contained in this supplement, obtain data for that
model from the relevant Holden Adventra AWD
series Service Information Supplement.
References are made throughout this section to
Holden Service Information, to assist in providing
information for specific service operations.
When hoisting (or jacking) HSV models,
ensure that the liftin g head of the hoist lifts on
the chassis before the arm of the hoist
contacts the side-skirt
Transmission Page F-3
Page F-3
2 Transmission - General
Information
HSV Avalanche AWD models fitted with Holden Automatic Transmissions are to be serviced in accordance with the
relevant Holden Adventra Service Information.
2.1 Automatic Transmission
General Description
The automatic transmissions fitted to HSV Avalanche AW D models are the hea vy duty Hydramatic 4L65E, which are
variants of the Hydra-matic 4L60E transmissions. These transmissions include calibration and hardware changes over
the standard 4L60E transmission.
These transmissions are all developments of the standard Holden Hydra-matic 4L65-E transmission. As in all HSV
developments, reliability and efficiency have been improved as a result of engineering research, development and
extensive testing. In most cases, development of the standard transmissions has been necessitated by - and carried out
in parallel with - the development of HSV’s enhanced range of engines. The result is that all HSV Avalanche AWD
models have an engine-transmission combination designed to satisfy (and to exceed) the operating specification of the
vehicle. Shift Patterns for each HSV transmission have been included in this section to assist with the diagnosis and
servicing of these transmissions.
Transmission Page F-4
Page F-4
2.2 HSV Avalanche AWD 270 Wagon
The Automatic Transmission available in Avalanche AWD, is the model THM. Service operations are the same as those
described in the MY 2004 AWD Crew Cab Service Information, refer to
Section 7D1 – Hydra-Matic 4L65-E Automatic Transmission – General Information.
Powertrain Control Module (PCM)
HSV transmissions fitted to 270 kW vehicles incorporate a specific PCM. This HSV PCM is calibrated to recognise the
higher torque of the engine, and to provide a specific shift pattern for optimum control of the vehicle. Section E of this
Supplement provides the identification and service numbers of the PCM required for these transmissions.
For Avalanche AWD HSV have taken the opportunity to include two very different transmission modes using the
Power/Economy switch. The economy mode shift pattern has been optimised for smooth driving while the Power mode
gives firmer shifts and takes advantage of the LS1 engines characteristics.
Transmission Page F-5
Page F-5
3 HSV Avalanche AWD Wagon
Front Final Drive
The Front Final Drive available in Avalanche AWD, is the same as fitted to Holden Adventra AWD models. Service
operations are the same as those described in the Holden Adventra AWD series Service Information, refer to
Section 4B2 – Front Final Drive Bearing Housing & Driveshafts – General Information