Air Antilock Brake System Schematic Icons. GMC Truck GMC C-Series Medium Duty Truck B7 2001

For 1990-2009 cars only

Makes 🢒 GMC_Truck 🢒 2001 🢒 GMC C-Series Medium Duty Truck B7 🢒 Brakes 🢒 Air Antilock Brake System 🢒 Air Antilock Brake System Schematic Icons

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Important: The wheel speed sensor (WSS) pigtail has female terminals. The ABS harness has female terminals. A Delphi© coupling with male terminals (P/N 12146445) is used to mate the two harnesses.

Be sure to check the connectors at both ends of this coupling during a visual diagnostic inspection of these circuits.

Important: Twisted-pair wires provide an effective "shield" that helps protect sensitive electronic components from electrical interference. Depending on application, twisted-pair wires are used on wiring harnesses connecting the following components:

•	data link connector (DLC)

•	electronic brake control module (EBCM)

•	powertrain control module (PCM)

•	wheel speed sensor (WSS)

In order to prevent electrical interference from degrading the performance of the connected components, you must maintain the proper specification when making any repairs to the twisted-pair wires shown :

•	The wires must be twisted a minimum of 12 turns per 30.5 cm (12 in) as measured anywhere along the length of the wires.

•	The outside diameter of the twisted wires must not exceed 6.0 mm 0.236 in).

Refer to Splicing Twisted or Shielded Cable in Wiring Systems.