GM Service Manual Online
For 1990-2009 cars only

Cruise Control Switch

Important: Unless the SET button has been previously activated during the current ignition cycle, the resume/accel mode (R/A) will not function.

The off/on/resume/accel switch has 3 positions. This switch turns the cruise control system on and off. After braking, when the driver momentarily moves the control toward the R/A position, the switch returns the cruise control operation to the last speed set. If the driver holds the switch in the R/A position for more than 1 second, the system reverts to the accel mode.

In order to accelerate the vehicle, move the slider switch to the R/A position. Hold the switch until the vehicle reaches the desired speed. When the driver releases the slider switch, the current speed becomes the new cruise speed. In order to use the accel mode, the cruise off/on/resume/accel switch must be in the ON position. Also, the vehicle must be above the low speed lockout of 40 km/h (25 mph).

Complete the following steps in order to "tap-up" the vehicle speed:

  1. Move the cruise off/on/resume/accel switch to the ON position. Set a cruise speed.
  2. Quickly press and release the slide switch toward the R/A position.
  3. Do not hold the lever in the R/A position or the system reverts to the accel mode.

"Tap-up" is a function in which cruise speed may be increased by 0.62 km/h (1 mph) increments (one tap = 1 mph).

Set/Coast Switch

In order to properly use the set/coast function, note the following:

    • The vehicle speed must exceed the low speed lockout point of 40 km/h (25 mph).
    • The off/on/resume/accel switch must be in the ON position.

The Set Position

Depress and release the button switch. The cruise speed will set at the current speed of the vehicle. Cruise speed will be within 0.62 km/h (1 mph) of the vehicle's actual speed when the cruise control was engaged. (NOTE: The driver may no longer set the cruise with the resume button.) The system will cruise at the set speed until the one of the following actions occur:

  1. The off/on/resume/accel switch is moved to the OFF position.
  2. The ignition switch is turned off.
  3. The set/coast button is fully depressed and held.
  4. The brake or the clutch pedal is depressed.

When the brake or the clutch pedal is depressed the cruise is released. The resume capability is retained.

The Coast Position

With the button switch fully depressed, the cruise speed may be raised or lowered. Complete the following steps in order to increase the cruise speed:

  1. Accelerate to a new speed.
  2. Fully depress the switch (the controller releases the previously set speed).
  3. Release the button.

When the button is released, the new speed is set. An increased cruise speed may also be set with the off/on/resume/accel switch as previously described.

Complete the following steps in order to decrease the cruise speed:

  1. Fully depress and hold the switch. The controller releases the previously set speed. The throttle returns to idle.
  2. When the vehicle has slowed to the desired cruise speed, release the switch. The system engages at the lower speed.

The Tap-Down Position

Perform the following steps in order to "tap-down":

  1. Turn the cruise off/on/resume/accel switch to the ON position. Set a cruise speed.
  2. Quickly press the set/coast Button.
  3. Quickly release, or "tap" the button.
  4. Do not hold the button in the depressed position or the system reverts to the coast mode.

"Tap-down" is a function in which cruise speed may be decreased by 0.62 km/h (1 mph) increments (one tap = 1 mph). The system can "tap-down" until it reaches the low speed lockout point of 40 km/h (25 mph), below which the cruise control does not operate.

Depress the accelerator at any time in order to override the cruise system. When the accelerator is released, the vehicle returns to the previously set cruise speed.