Info - Pre-Delivery and Service Guide

The purpose of this bulletin is to introduce the new 2005 Buick LaCrosse (Allure). Included is a description of the vehicle's features as well as actions your Service Department will need to take to ensure that your dealership is able to fully service this exciting new model.

The 2005 Buick LaCrosse (Allure) is a four door mid-size sedan and is available in three different models, the CX, CXL and the CXS.

Engine

The LaCrosse (Allure) CX and CXL come standard with a 3.8L 3800 Series III V6 (RPO L26) -- VIN code 2. The Series III version continues the tradition of outstanding performance and reliability. Electronic throttle control allows the engine to respond more precisely to driver commands at both low and high speeds, and structural enhancements have reduced vibration for a smooth, quiet ride.

The LaCrosse (Allure) CSX comes standard with a 3.6L VVT DOHC V6 (RPO LY7) -- VIN code 7. This is a first of a new family of V6 engines to go into production and is one of GM's most advanced. Featuring fully variable valve timing for both intake and exhaust, this impressive power plant reduces emissions while providing outstanding fuel economy (EPA estimated mpg 19 city, 28 hwy). Variable valve timing also enables this engine to deliver an impressive 240 hp and 255 lb-ft of torque.

Transmission

Both engines are mated to the 4T65E transaxle (RPO M15). This electronically controlled 4-speed automatic transmission employs advanced calibration logic to help ensure smooth, precise shifting. In addition to its proven durability, the transmission also utilizes adaptive learning logic, tailoring it to the driver's style for optimum shifting performance.

Electrical Architecture

The electrical architecture of the vehicle is Class 2 and GMLAN. GMLAN requires the use of a CANdi module to communicate with the Tech 2®. SI Document ID #1545666 identifies which serial data link that a particular module uses for in-vehicle data transmission. There are potentially 20 different modules that can be found on the LaCrosse (Allure). SI Document ID  #1464741 provides a list of modules as well as links to schematics, repair instructions and programming and set-up information. Some key location of modules are:

Throttle Actuator Control (TAC) System

The throttle actuator control (TAC) system delivers improved throttle response and greater reliability and eliminates the need for a mechanical cable between the pedal and throttle body.

Driver's Information Center

The driver's information center (DIC) display is located on the instrument cluster below the speedometer. The base level DIC displays the odometer and trip odometer. Uplevel DICs also display a compass, trip computer, fuel economy information, OnStar® phone numbers called (if equipped) and other messages or warnings. The DIC controls are located on the center of the instrument panel.

Steering Wheel Controls

The following features can be accessed using the steering wheel controls:

Headlamp Control Positions

1. On/Off
2. Automatic
3. Parking Lamps
4. Headlamps Manually On

Fog lamp switch located in the center of headlamp switch, push on/off.

High Beam Headlamps

Interior Lamp Control

Personalization Features

The following personalization features are available through the DIC

Remote Vehicle Start

This feature allows the customer to start the vehicle from the outside the vehicle by using the Remote Keyless Entry transmitter. Normal range of the transmitter is 200 feet (60 meters) from the vehicle. The engine will run for 10 minutes before turning itself off. It can be extended 10 minutes more by performing another remote start sequence at any time. If the vehicle has automatic climate control and the remote start system is activated, the HVAC system will sense the outside temperature and automatically enter the appropriate optimal pre-cooling or pre-heating mode regardless of the heat/air conditioning setting on the instrument panel.

To start the vehicle using the remote start feature, do the following:

1. Aim the transmitter at the vehicle.
2. Press and release the transmitter's lock button, then immediately press and hold the transmitter's remote start button until the turn signal lamps flash, or if the vehicle's lights are not visible, press and hold the transmitter's remote start button for four seconds. The vehicle's doors will lock.
3. When the vehicle's engine starts, the parking lamps will turn on and remain on while the engine is running.

The engine will shut off automatically after 10 minutes, unless a time extension has been done or the vehicle's key is inserted into the ignition switch and turned to RUN.

Unlock the door(s) with the transmitter or key. If you enter the vehicle after a remote start, and the engine is still running, insert the key into the ignition switch and turn it to the RUN position to drive the vehicle.

4. To manually shut off a remote start, do any of the following:

•	Aim the remote keyless entry transmitter at the vehicle and press the remote start button until the parking lamps turn off.

•	Turn on the hazard warning flashers.

•	Turn the ignition switch to RUN and then to OFF.

Your vehicle's engine may be started two times using the transmitter's remote start feature. If only one remote start procedure has been done since last driving the vehicle, or resetting the remote start system, the engine may be started again remotely following the remote start procedure a second time

If the remote start procedure is used again before the first ten minute time frame has ended, 10 minutes will be added to the remaining minutes. The added 10 minutes are considered a second remote start.

The remote vehicle start feature will not operate if:

If a remote start is attempted and is unsuccessful, the Driver Information Center (DIC) will display REMOTE START DISABLED.

Vehicles equipped with the remote vehicle start feature are shipped from the factory with the remote vehicle start system enabled. The system may be disabled through the DIC.

HomeLink® Wireless Control System

The HomeLink® system is a transmitter operating between 288-399 MHz. The power and range of the transmitter is limited to comply with laws governing the generation of radio frequency interference (RFI). The transmitter is located on the driver's sunvisor and can be programmed to store 3 different frequencies for a garage door opener, entry door lock, security system, etc. The HomeLink® system will only work with key on.

Passenger Air Bag Status Indicator

The vehicle's passenger sensing air bag system has a status indicator located in the instrument panel center stack. With the key in Run or Start, the indicator blinks on/off for several seconds as a system check. Following, the light will stay on or off to indicate passenger side air bag status. If it shows that the air bag is on, it means that the air bag is enabled (could inflate). If it shows that the air bag is off, the passenger air bag is disabled.

Rear Parking Assist

The ultrasonic rear parking assist (URPA) can help a driver determine how close an object is to the rear bumper within a defined rearward field of view.

The rear parking assist display is located inside the vehicle above the rear window. The display has 3 indicators that can be seen through the rearview mirror or by turning around when seated in the driver seat.

When the ignition is ON and the vehicle is placed into reverse, the URPA performs a bulb check. During the bulb check, the 3 indicators on the display illuminate for approximately 2 seconds to indicate that the system is working. The URPA performs a bulb check and operates when the following conditions are present:

The URPA senses how close the vehicle is to an object. The distance is determined by the four ultrasonic sensors located on the rear bumper. When the system detects an object, one of the following will occur:

URPA can detect objects 7.6 cm (3 in) wide and at least 25.4 cm (10 inches) tall. It cannot detect objects above the level of the roof.

If the red indicator flashes continuously, the on-board diagnostic needs to be entered to determine if a malfunction is present.

Tilt/Telescoping Steering Wheel

The LaCrosse (Allure) is equipped with a telescoping steering column which also adjusts up and down. To adjust the tilt position of the steering wheel, hold the wheel and pull the lever on the left of the column toward you. Move the wheel up or down and release the lever to lock. To adjust the telescoping position of the steering wheel, push down on the lever to unlock the steering wheel. Pull or push the steering wheel to the desired position. Push up on the lever to lock the steering wheel.

Outside Rear View Mirrors

The outside rear view mirrors do not fold away.

Delayed Locking

Delayed locking for base cluster has been turned off and the chime will not sound. There is no personalization opportunity to turn the delayed locking back on.

Tire Pressure Monitoring System

The 2005 LaCrosse (Allure) is not equipped with tire pressure monitoring system.

HVAC System

On remote start, automatic HVAC equipped vehicles will adjust cabin temperature and turn on defoggers according to outside temperature and default back to the previous key off setting when the key is inserted and rotated forward. AC compressor will also default on when not remote started. If the system was in vent mode and AC off, on the next ignition cycle, the AC will turn on. This is designed to assist in window defogging.

Steering Wheel Lock

The steering wheel lock has been eliminated from the 2005 LaCrosse (Allure).

OnStar® Antenna

There are two different OnStar® antennas, one with sunroof option and one without sunroof. These two antennas are not interchangeable.

Trunk Access

To unlock the trunk from the outside of the vehicle, use the key FOB. To unlock the trunk from inside the vehicle, press and hold the top of the driver's or front passenger's power door lock switch for approximately two seconds. The vehicle must be in Park to unlock the trunk.

Rear Seat Trunk Pass-Through

To fold down one or both sides of the rear seatback, disconnect the rear center lap-shoulder belt latch by pressing the release button with a point object. Pull forward on the seatback tab on the outboard of the rear seat cushion and fold the seatback down.

Glove Box

A shelf is located at the top of the glove box to stow the OnStar® and Owner's Manuals.

Load Floor (Spare Tire Cover)

For convenient access to the spare tire, lift and attach the load floor (tire cover) handle to the front of the deck lid weatherstrip.

Electronic Service Information

All required service information is currently online on GM SI. A dealership can also find the most current Owner's Manual and Labor Time Guide online at website http://service.gm.com and under Service Information link.

Serviceable Components of Assembly

The following components are serviceable separately from their assemblies:

The PDI form was revised for the 2005 model year to ensure special attention is paid to the following areas: (refer to Corporate Bulletin # 04-00-89-028).

Cleaning of Interior Components

The luxuriousness of the LaCrosse (Allure)'s interior has been enhanced by a low gloss finish on the components. Maintaining the cleanliness of these components will help protect and preserve the finish over the life of the vehicle. Use mild cleaners, the procedures described in the Owner's Manual, and protect from abrasive damage caused by dirt and other articles. Please do not use abrasive substances against these finishes and avoid cleaners containing waxes or silicones which will increase the finish gloss level.

Washing Under Hood Area

During PDI, it is a good idea to wash/clean the under hood and engine compartment area.