LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Cadillac >> 2011 >> CTS Base, 2D Coupe, AWD >> Repair and Diagnosis >> Electrical >> Wiring Diagrams >> Wiring Systems And Power Management - Component Connector End Views - Memory Seat Module Through Rear Window Defogger Relay >> Component Connector End Views >> Park Brake Control Module (J77)
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Park Brake Control Module (J77)

Fig 1: Park Brake Control Module (J77)
GM2216895Courtesy of GENERAL MOTORS CORP.
Park Brake Control Module (J77)

Pin Wire Circuit Function
A 3.0 RD/BK 242 Battery Positive Voltage
B 0.35 PU 7683 Park Brake Release Signal
C 0.35 L-BU 1134 12-Volt Reference
D 0.35 PU 7684 Park Brake Apply Signal
E 0.35 TN/BK 2500 High Speed GMLAN Serial Data Bus+ (without F55)
F 0.35 TN/BK 2500 High Speed GMLAN Serial Data Bus+
G 0.35 TN/BK 2500 High Speed GMLAN Serial Data Bus+
H 3.0 BK 1050 Ground
J - - Not Used
K 0.35 TN 2501 High Speed GMLAN Serial Data Bus-
L 0.35 TN 2501 High Speed GMLAN Serial Data Bus-
M 0.35 TN 2501 High Speed GMLAN Serial Data Bus- (without F55)
N 0.35 YE 1492 12-Volt Reference
P 0.35 L-BU 5986 Serial Data Communication Enable
R 0.35 BN 6107 Low Reference
S 0.35 D-BU 6108 Low Reference
Connector Part Information 
  • Harness Type: Chassis
  • OEM Connector: 88988439
  • Service Connector: 15306348
  • Description: 16-Way F GT 150 280 Series, Sealed (BK)
Terminal Part Information 
  • Pins: A, H
  • Terminated Lead: SEALED: 13575403 UNSEALED: 13578903
  • Release Tool: J-38125-553
  • Diagnostic Test Probe: J-35616-4A (PU)
  • Terminal/Tray: 15304720/19
  • Core/Insulation Crimp: 4/5
  • Pins: B-G, K-R
  • Terminated Lead: SEALED: 13327112 UNSEALED: 13578912
  • Release Tool: J-38125-553
  • Diagnostic Test Probe: J-35616-2A (GY)
  • Terminal/Tray: 12191819/8
  • Core/Insulation Crimp: E/1
  • Pin: S
  • Terminated Lead: SEALED: 13575406 UNSEALED: 13578902
  • Release Tool: J-38125-553
  • Diagnostic Test Probe: J-35616-4A (PU)
  • Terminal/Tray: 15304719/19
  • Core/Insulation Crimp: E/5