GM Service Manual Online
For 1990-2009 cars only

If the vehicle has this system, read this entire section before using it.

The system operates on a radio frequency subject to Federal Communications Commission (FCC) Rules and with Industry Canada.

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:

  1. This device may not cause interference, and
  2. This device must accept any interference received, including interference that may cause undesired operation of the device.

This device complies with RSS-210 of Industry Canada. Operation is subject to the following two conditions:

  1. This device may not cause interference, and
  2. This device must accept any interference received, including interference that may cause undesired operation of the device.

Changes or modifications to this system by other than an authorized service facility could void authorization to use this equipment.

The Forward Collision Alert (FCA) system provides an audible and visual warning if you approach a vehicle too rapidly. FCA also provides a visual warning with no audible warning if you are following another vehicle much too closely. FCA uses the Adaptive Cruise Control radar to detect a vehicle directly ahead, in your path, within a distance of 328 ft (100 m) and operates at speeds above 20 mph (32 km/h).

Caution: FCA is only a warning system and does not apply the brakes. When you are approaching a vehicle or object too rapidly or when you are following a vehicle too closely that is ahead of you, FCA may not provide you with enough time to avoid a collision. FCA is not designed to warn the driver of pedestrians or animals. Your complete attention is always required while driving and you should be ready to take action and apply the brakes. For more information, see Defensive Driving .


Object Number: 807914  Size: A2

The Forward Collision Alert (FCA) controls are located on the end of the multifunction lever.

(Off): Turns the system off.

(On): Turns the system on.

The Head-Up Display must be on and properly adjusted. If the HUD is not on, FCA will not be enabled and you will not be provided with FCA audible and visual warnings. See Head-Up Display (HUD) for more information.

Caution: 

   • On winding roads, FCA may not detect a vehicle ahead. You could crash into a vehicle ahead of you. Do not rely on FCA on winding roads.
   • When weather limits visibility, such as in fog, rain, or snow, FCA performance is limited. There may not be enough warning distance to the vehicle in front of you. Do not rely on FCA in low visibility conditions.

Caution: When FCA is enabled, the Adaptive Cruise Control switch is on. If you press another Adaptive Cruise Control button, you might go into cruise when you do not want to. You could be startled and even lose control. Be careful not to press adaptive cruise buttons unless you want to use cruise control.

Warning the Driver


Object Number: 1085663  Size: A1

The alert symbol will flash on the HUD and a warning beep will sound when driver action may be required.

The driver warning is active when:

    • You are approaching a vehicle too quickly.
    • You are following a vehicle ahead much too closely.

See Defensive Driving for more information.

Detecting the Vehicle Ahead

The vehicle ahead symbol will only appear on the HUD when a vehicle ahead of you is detected in your path. If this symbol does not appear, or disappears briefly, FCA will not respond to vehicles you may see ahead. The symbol may disappear on curves, highway exit ramps, or hills. Also, when another vehicle enters the same lane as you, the FCA system will not detect the vehicle until it is completely in your driving lane.

Caution: When the Adaptive Cruise Control radar is blocked by snow, ice, or dirt, it may not detect a vehicle ahead. FCA may not help you avoid a collision under these conditions. Do not use FCA when the radar is blocked by snow, ice, or dirt. Keep your radar clean. See "Cleaning the System" under Adaptive Cruise Control .

Caution: FCA may not detect and warn soon enough to stationary or slow-moving vehicles or other objects ahead of you. You could crash into an object ahead of you. Do not rely on FCA when approaching stationary or slow-moving vehicles or other objects.

Unnecessary Warnings

FCA may occasionally provide an unnecessary warning to guard rails, signs, and other stationary objects. This is normal operation, your vehicle does not need service.

Other Messages

There are three messages that may appear on the Driver Information Center (DIC). They are CLEAN RADAR, RADAR CRUISE NOT READY and SERVICE RADAR CRUISE. See DIC Warnings and Messages .

Cleaning the System

The radar can become blocked by snow, ice, or dirt. If so, you may need to turn off the engine and clean the lens. See "Cleaning the System" under Adaptive Cruise Control .