GM Service Manual Online
For 1990-2009 cars only

Tahoe Police Package and Special Service Package

The following exterior lighting features apply to vehicles first sold in the United States.

Your vehicle is equipped with Daytime Running Lamps (DRL) and an Automatic Headlamp System (AHS). The DRL and AHS can be turned to OFF with the headlamp switch when the transmission is in PARK (P) and the engine is at idle. If the engine is not turned off, the DRL and AHS will remain OFF when the transmission is placed in gear. The vehicle may be driven with the lamps off for one ignition cycle.

Your vehicle may have been built with SEO 9G8, DRL AND AHS DISABLE. This feature turns off DRL and AHS and requires manual control of the exterior lighting. See your dealer to restore the DRL and AHS to normal operation.

For vehicles first sold in Canada, the DRL and AHS can be turned off if the transmission is in PARK (P). See your owner's manual for more information.

Special Features

Tahoe Police Package and Special Service Package

The following standard Tahoe features are disabled in the Tahoe Police Package and Special Service Package.

    • Entry Lighting and Exit Lighting
    • Remote Keyless Entry Feedback (Horn Beep) and (Lamps Flash)

Automatic Door Locking is standard. If you need it disabled, see your dealer.


Object Number: 1657678  Size: A1

The exterior lamps control is located on the instrument panel to the left of the steering wheel.

It controls the following systems:

    • Headlamps
    • Taillamps
    • Parking Lamps
    • License Plate Lamps
    • Instrument Panel Lights

The exterior lamps control has four positions:

(Off): Turn the control to this position to turn off the automatic headlamps and daytime running lamps (DRL). Turning the headlamp control to the off position again will turn the automatic headlamps or DRL back on. For vehicles first sold in Canada, the off position will only work for vehicles that are shifted into the PARK (P) position.

AUTO (Automatic): Turn the control to this position to automatically turn on the headlamps at normal brightness, together with the following:

    • Parking Lamps
    • Instrument Panel Lights
    • Taillamps
    • License Plate Lamps
(Parking Lamps): Turn the control to this position to turn on the parking lamps together with the following:

    • Instrument Panel Lights
    • Taillamps
    • License Plate Lamps
&(Headlamps): Turn the control to this position to turn on the headlamps together with the following lamps listed below.

    • Parking Lamps
    • Instrument Panel Lights
    • Taillamps
    • License Plate Lamps

The headlamps will automatically turn off:

    • 10 minutes after the ignition is turned off, if the headlamps were turned on with the ignition on.
    • After 10 minutes if the headlamps were turned on with the ignition already off.

Turn the headlamp control to off and then back to the headlamp on position to make the headlamps stay on for an additional 10 minutes.