GM Service Manual Online
For 1990-2009 cars only

Cruise Control Switch Assembly

The cruise control switch assembly is comprised of the following switches:

    • The On/Off switch
    • The Resume/Accel/Set/Decel switch

The On/Off switch is located on the left side of the steering wheel. The Resume/Accel/Set/Decel switch is mounted on the right side of the steering wheel.

The switches are not independent of one another. Service the switches as one assembly. The On/Off switch has positions. This switch turns the cruise control system ON and OFF. A small indicator lamp on the switch illuminates when the switch is in the ON position.

Set/Decel Switch

The cruise control Set/Decel switch is located on the right side of the steering wheel. The cruise control Set/Decel switch has the following positions:

    • Normal
    • Depressed

Set Position

Perform the following steps in order to set the cruise speed:

  1. Ensure that the vehicle speed exceeds the low speed lockout point.
  2. Place the ON/OFF switch in the ON position.
  3. Depress and then release the SET/DECEL switch.

The cruise speed will be set at the particular speed the vehicle was at when the switch was released. The vehicle cruise speed will be within 0.62 km/h (1 mph) of the actual speed when you engage the switch and after the speed has stabilized. You may not set the cruise speed with the Resume button.

The system will cruise until any of the following actions occurs:

    • The On/Off switch is moved to OFF.
    • The ignition switch is turned OFF.
    • The Set/Decel switch is pushed in and fully held.
    • The brake pedal is depressed. (Pushing the brake pedal releases the cruise, but not the cruise capability.)

Decel Position

With the switch fully depressed, the driver may raise or lower the vehicle speed. In order to decrease vehicle speed, complete the following steps:

    • Fully depress the switch.
    • The controller releases the previously set speed.
    • Slow to a new speed.
    • Once the switch is released, the new speed sets.

An increased control speed can also be set with the Resume/Accel switch, as described later in this section.

Tap-Down Function

In order to tap down, complete the following steps:

  1. Ensure that the cruise is engaged and operating.
  2. Press the Set/Coast button to the depressed position.
  3. Release the button (or tap the button).

Do not hold the button in the depressed position or the system will revert to the coast mode.

The tap-down function allows you to decrease the cruise speed by 0.62 km/h (1 mph) increments (one tap equals a 1 mph decrease). The system may tap-down until the system reaches the low speed lockout of 40 km/h (25 mph). The cruise will be inoperative.

Resume/Accel Switch

The Resume/Accel switch is located on the right side of the steering wheel.

The Resume/Accel switch has the following positions:

    • Normal
    • Depressed

Resume Position

Important: The Resume will not function unless the Set button has been previously set on the current ignition cycle.

The Resume switch returns the cruise control operation to the last speed setting by momentarily depressing the switch after braking. If you hold the switch in the RESUME/ACCEL position for more than one second, the system reverts to the Accel mode.

Accel Position

In order to accelerate the vehicle, perform the following steps:

  1. Verify that the cruise control On/Off switch is in the ON position.
  2. Ensure that the vehicle is above the low speed lockout which is approximately 40 km/h (25 mph).
  3. Press the Resume switch.
  4. Hold the Resume switch until the vehicle reaches the desired speed.
  5. Release the Resume switch.

The speed the vehicle has accelerated to becomes the new cruise speed when you release the Resume/Accel switch.

Tap-Up Function

Caution: In order to keep the vehicle under control, and to prevent possible vehicle damage, it is not advisable to use the cruise control on slippery roads. It is recommended not to use the cruise control in conditions such as on winding roads or in traffic of heavy or varying volume.

In order to tap-up the vehicle speed, use the Resume/Accel switch and complete the following steps:

  1. Ensure that the cruise is engaged and operating.
  2. Press the Resume/Accel switch down.
  3. Release the switch (or tap the switch).

The system will revert to the Accel mode if you hold the switch in the Resume/Accel position. The tap-up allows you to increase the cruise speed by 0.62 km/h (1 mph) increments (one tap equals a 1 mph increase). Depress the accelerator at any time in order to override the cruise system. Release the accelerator in order to return the vehicle to the previously set cruise speed.