Modulator

STS, STS-v. Wagon, CTS. Coupe, CTS-v. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors

ABS Control Unit

Wagon, CTS. This part requires programming and/or special setup procedures GM Service Information describes the procedures and special tools needed to ensure proper operation in the vehicle Helps provide controlled braking in icy or wet conditions Helps tires provide maximum grip with the road surface Reads vehicle sensors to trigger anti-lock braking system (ABS) and traction control system Helps to reduce wheel slippage for controlled acceleration, and stopping, in slippery situations