Chevrolet Silverado / GMC Sierra. Service manual — part 2669

update, the mirror will then display the current outside temperature.

Ignition is off for more than 2 hours, then is turned ON for less than 3 minutes. The mirror
will update the temperature display every 2 seconds.

Ignition is OFF for more than 2 hours, then is turned ON for more than 3 minutes. The
outside temperature is less than the last temperature recorded by the mirror. The mirror will
then display the current outside temperature.

Ignition has been OFF for less than 2 hours. The outside temperature is greater than the last
temperature recorded by the mirror, but the ignition is cycled from ON to OFF within 2
minutes. The mirror will display the old temperature.

Ignition has been OFF for less than 2 hours. The outside temperature is less than the last
temperature recorded by the mirror. The mirror will then display the current outside
temperature.

Switches of the Inside Rearview Mirror with the Automatic Day-Night Feature and Compass without OnStar®

The inside rearview mirror has 2 switches that perform the following functions:

The MIRROR switch is used to enable or disable the automatic day-night feature of the
mirror. With the ignition in the ON position, depress the MIRROR switch to enable the
automatic day-night feature of the mirror. A green indicator will illuminate on the mirror
when the automatic day-night feature is enabled. To disable the automatic day-night feature
of the mirror, depress the MIRROR switch.

The COMPASS switch is used to turn the compass ON and OFF. With the ignition in the
ON position, depress the COMPASS switch to turn the compass ON. Depress the
COMPASS switch again to turn the compass OFF. The COMPASS switch is also used to
place the compass into a calibration or zone mode. For more information, refer to Compass
Calibration and Magnetic Variance .

Switches of the Inside Rearview Mirror with the Automatic Day-Night Feature, Compass/Temperature Display without
without OnStar®

The inside rearview mirror has 2 switches that perform the following functions:

The TEMP switch is used to turn the compass/temperature display ON or OFF, it is also
used to enable or disable the automatic day-night feature of the mirror. With the ignition in
the ON position, depress the TEMP switch to enable the compass/temperature display.
Depress the TEMP switch again to disable the compass/temperature display. The TEMP
switch can be held for 4 seconds in order to change the display from Fahrenheit (°F) to
Celsius (°C), or from Celsius (°C) to Fahrenheit (°F). Depress the TEMP switch until the
green indicator illuminates on the mirror. This indicates that the automatic day-night feature

2008 Chevrolet Silverado 1500

2008 ACCESSORIES & EQUIPMENT Mirrors - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

is enabled. To disable the automatic day-night feature of the mirror, depress the TEMP
switch until the green indicator turns OFF.

The COMP switch is used to turn the compass/temperature display ON or OFF. With the
ignition in the ON position, depress the COMP switch to turn the compass/temperature
display ON. Depress the COMP switch again to turn the compass/temperature display OFF.
The COMP switch is also used to place the compass into a calibration or zone mode. For
more information, refer to Compass Calibration and Magnetic Variance .

Switches of the Inside Rearview Mirror with the Automatic Day-Night Feature with Compass and OnStar®

The inside rearview mirror has 4 switches that perform the following functions:

The ON/OFF switch located at the left side of the mirror performs the following functions:

To enable or disable the automatic day-night feature of the mirror-With the ignition in
the ON position, depress and hold the ON/OFF switch for 4 seconds to enable the
automatic day-night feature of the mirror. A green indicator will illuminate on the
mirror when the automatic day-night feature is enabled. To disable the automatic day-
night feature of the mirror, depress and hold the ON/OFF switch for 4 seconds.

To turn the compass ON and OFF-With the ignition in the ON position, depress the
ON/OFF switch to turn the compass ON. Depress the ON/OFF switch again to turn the
compass OFF. The ON/OFF switch is also used to place the compass into a calibration
or zone mode. For more information, refer to Compass Calibration and Magnetic
Variance .

The 3 switches on the right side of the mirror are for OnStar® operation. For more
information, refer to OnStar Description and Operation .

Switches of the Inside Rearview Mirror with the Automatic Day-Night Feature, Compass/Temperature Display with
OnStar®

The inside rearview mirror has 4 switches that perform the following functions:

The ON/OFF switch located at the left side of the mirror performs the following functions:

To enable or disable the automatic day-night feature of the mirror-With the ignition in
the ON position, depress and hold the ON/OFF switch for 6 seconds to enable the
automatic day-night feature of the mirror. A green indicator will illuminate on the
mirror when the automatic day-night feature is enabled. To disable the automatic day-
night feature of the mirror, depress and hold the ON/OFF switch for 6 seconds.

To turn the compass/temperature display ON and OFF-With the ignition in the ON
position, depress the ON/OFF switch to turn the compass/temperature display ON.
Depress the ON/OFF switch again to turn the compass/temperature display OFF. The

2008 Chevrolet Silverado 1500

2008 ACCESSORIES & EQUIPMENT Mirrors - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

ON/OFF switch can be held for 4 seconds in order to change the display from
Fahrenheit (°F) to Celsius (°C), or from Celsius (°C) to Fahrenheit (°F). The ON/OFF
switch is also used to place the compass into a calibration or zone mode. For more
information, refer to Compass Calibration and Magnetic Variance .

The 3 switches on the right side of the mirror are for OnStar® operation. For more
information, refer to OnStar Description and Operation .

2008 Chevrolet Silverado 1500

2008 ACCESSORIES & EQUIPMENT Mirrors - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

2008 BRAKES

Park Brake - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

SPECIFICATIONS

FASTENER TIGHTENING SPECIFICATIONS

Fastener Tightening Specifications

DIAGNOSTIC INFORMATION AND PROCEDURES

DIAGNOSTIC STARTING POINT - PARK BRAKE

Begin the system diagnosis by reviewing the system description and operation. Reviewing the
description and operation information will help you determine the correct symptom diagnostic
procedure when a malfunction exists. Reviewing the description and operation information will
also help you determine if the condition described by the customer is normal operation. Refer to
Symptoms - Park Brake in order to identify the correct procedure for diagnosing the system
and where the procedure is located.

SYMPTOMS - PARK BRAKE

Refer to Park Brake System Description and Operation (w/Rear Drum) or Park Brake
System Description and Operation (w/Rear Disc).

Visual/Physical Inspection

Application

Specification

Metric

English

Park Brake Backing Plate Bolts

135 N.m

100 lb ft

Park Brake Cable Clip Bolt

22 N.m

16 lb ft

Park Brake Cable Guide Bolts

12 N.m

106 lb in

Park Brake Pedal Assembly Nuts

25 N.m

18 lb ft

Park Brake Release Handle Bolt

9 N.m

80 lb in

Park Brake Shoe Retaining Clip Bolts

15 N.m

11 lb ft

Park Brake Warning Lamp Switch Bolt

3 N.m

27 lb in

IMPORTANT: Review the system operation in order to familiarize yourself with

the system functions.

2008 Chevrolet Silverado 1500

2008 BRAKES Park Brake - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

2008 Chevrolet Silverado 1500

2008 BRAKES Park Brake - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado