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 VYII series Service Manual before performing any service operation
on or around SRS components, the steering mechanism or wiring. Failure to follow the CAUTIONS could
result in personal injury or unnecessary SRS system repairs.
1 Purpose...............................................................................................................................................F-2
2 General Information ........................................................................................................................... F-3
3 Clutch .................................................................................................................................................. F-4
3.1 GMH Clutch .........................................................................................................................................................F-4
4 Manual Transmission.........................................................................................................................F-5
4.1 Service Operation ...............................................................................................................................................F-5
5 Automatic Transmission ...................................................................................................................F-6
5.1. General Description............................................................................................................................................F-6
5.2. HSV VY Clubsport 285, Senator 285 Sedan and Signature 285 Sedan. .........................................................F-7
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 VYII models. This
information is designed to supplement the information contained in the Holden VYII series Service Manuals, 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 VYII series
Service Manual Supplement. References are
made throughout this section to Holden Service
Manuals, 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 General Information
A range of manual and automatic transmissions are fitted to the HSV VYII models. This range includes the standard
Holden options of four-speed automatic and six speed manual.
HSV models fitted with standard Holden transmissions are to be serviced in accordance with the relevant Holden Service
Manual: clutch mechanisms associated with these vehicles are also addressed in the Holden publications.
New for VYII is the heavy duty HZD transmission which was introduced on VY 300kW auto .
The following table provides a summary of Standard (S) and Optional (O) transmissions fitted to HSV VY models.
TABLE F-1
MANUAL AUTOMATIC
MODEL GMH T56 HZD
Clubsport 285 Sedan S O
Senator 285 Sedan S O
Senator Signature 285
Sedan O S
Grange 285 Sedan S
GTS 300 Sedan S O
Transmission Page F-4
Page F-4
3 Clutch
3.1 GMH Clutch
HSV vehicles fitted with the standard Holden manual transmission (see Table F-1), are also fitted with a standard Holden
clutch. These clutch assemblies are to be serviced in accordance with the procedures contained in the relevant Holden
Service Information, refer to Section 7A2 – Clutch – Gen III V8 Engine.
Transmission Page F-5
Page F-5
4 Manual Transmission
4.1 Service Operations
All HSV VYII manual vehicles come fitted with the standard Holden T56 manual transmission.
Service operations for this transmission are detailed in the Holden VYII series Service Supplement, refer to
Section 7B2 – Manual Transmission – Gen III V8 Engine.
Transmission Page F-6
Page F-6
5 Automatic Transmission
5.1. General Description
The automatic transmissions fitted to HSV VYII models are the heavy 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 4L60-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 VYII models have an
engine-transmission combination designed to satisfy (and to exceed) the operating specification of the vehicle. The
types of automatic transmissions used in the HSV VYII and series of vehicles listed in Table F-1, are explained in
succeeding paragraphs. Shift Patterns for each HSV transmission have been included in this section (see Figures F-6 to
F-7) to assist with the diagnosis and servicing of these transmissions.
Transmission Page F-7
Page F-7
5.2. HSV VY Clubsport 285, Senator 285
Sedan and Signature 285 Sedan.
The Automatic Transmission available for Clubsport, Senator and Maloo 285 Models, is the model HZD. Service
operations are the same as those described in the Holden VYII series Service Information, refer to
Section 7C – Hydra-Matic 4l60-E Automatic Transmission – General Information.
Powertrain Control Module (PCM) HSV transmissions fitted to 285 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 VYII 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.