For 1990-2009 cars

# TRACTION CONTROL CYCLING (INFORMATION)

#### SUBJECT: TRACTION CONTROL AND ANTILOCK BRAKES CYCLING (INFORMATION)

#### VEHICLES AFFECTED: 1993 "D" MODEL

THIS BULLETIN IS BEING REVISED TO ADD INFORMATION ON ANTILOCK BRAKES AND REVISE THE TITLE.

The Cadillac Fleetwood antilock brake and traction control system may activate under various road and/or turning conditions. This is normal, since wheel lock-up or slip may occur under these conditions.

The Antilock brakes are designed to activate if wheel-locking tendency is noted during a brake application. Pedal pulsation is present during antilock braking as are the ticking or popping noises from the brake pressure modulator valve. Decreased pedal height may result when antilock braking is initiated on bumpy or loose road surfaces.

Traction control is designed to apply the brakes and/or throttle adjuster assembly if a difference in wheel speeds occurs during even slight acceleration. Various road and/or turning conditions may also cause wheel speed differences.

These conditions are normal, but may cause some customer comments if they do not understand that various conditions may cause the antilock brakes or traction control to activate. If a comment of this nature is encountered, an explanation of the system design intent should help eliminate customer concerns.

General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information.