FellowTraveler
Well-Known Member
VSSB PIN IN/OUT 1999 GMC, 6.5TD, K2500, 4WD AUTOTRAC, BURB
Vehicles equipped with AutoTrac NP246 t-case have 3 speed sensors (VSS) one is used for VSSB the other two (front/rear drive-shafts) these 2 speed sensors work in concert with ABS wheel sensors and integrate into AutoTrac controller.
Harness to VSSB module has 9 pin locations, w/ 8 being used & 1 blank.
C-7: (LT GRN/BLK) input from VSS to VSSB
C-8: (BLK/WHT) ground (- neg.) to engine
C-9: (BRN) ignition feed (+ hot) fused 10amp
C-10: (WHT) output to ABS controller
C-11: NOT USED IN DIESEL APPLICATION, otherwise its (DK BLU) VSS output vehicle speed signal to terminal F-13 @ PCM
C-12: (PPL/WHT) VSS input
C-13: (BRN) transmission output speed to terminal F-12 @ PCM
C-14: (GRN/WHT) VSSB output to cruise control “FSD/PMD are also integrated into cruise control”
C-15: (DK GRN) VSSB output to speedo
Vehicles equipped with AutoTrac NP246 t-case have 3 speed sensors (VSS) one is used for VSSB the other two (front/rear drive-shafts) these 2 speed sensors work in concert with ABS wheel sensors and integrate into AutoTrac controller.
Harness to VSSB module has 9 pin locations, w/ 8 being used & 1 blank.
C-7: (LT GRN/BLK) input from VSS to VSSB
C-8: (BLK/WHT) ground (- neg.) to engine
C-9: (BRN) ignition feed (+ hot) fused 10amp
C-10: (WHT) output to ABS controller
C-11: NOT USED IN DIESEL APPLICATION, otherwise its (DK BLU) VSS output vehicle speed signal to terminal F-13 @ PCM
C-12: (PPL/WHT) VSS input
C-13: (BRN) transmission output speed to terminal F-12 @ PCM
C-14: (GRN/WHT) VSSB output to cruise control “FSD/PMD are also integrated into cruise control”
C-15: (DK GRN) VSSB output to speedo
