Body Control Module

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03-20-2010 | 07:14 AM

the_merv

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From: The Beach

Body Control Module

I have a 1999 GMC Sierra Ext Cab 5.3l.. Anyone happen to have the Connector Pin Diagram for the BCM?

A Schematic will work too..I'm trying to disable the damn auto-lock and I think if I clip the Speedo Signal wire that goes into it that will take care of it.

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03-27-2010 | 09:07 AM

the_merv

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From: The Beach

Nobodys got anything..

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05-04-2010 | 12:39 AM

SnakeOiler

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From: F'burg, VA

Schematics

C-1 Body Control Module

Connector Part Information

12160778
24 Way F Micro-Pack 100 Series (BRN)

Code:

Pin     Wire Color    Circuit No.       Function

A1         BLK           1850           Ground
A2         ORN           1140           Fused Battery Feed
A3         WHT            194           Power Door Lock  Relay Feed - Unlock Coil
A4       LT BLU           195           Power Door Lock  Relay Feed - Lock Coil
A5-A6      --              --           Not Used
A7         BLK            755           Delayed Accessory  Bus Relay Output Coil - ACC Relay (Uplevel)
A8       DK BLU          1393           Interior Lamp Relay  Output - Coil
A9         BLK             28           Horn Relay Output  - Coil
A10        --              --           Not Used
A11     LT GRN/BLK        592           Daytime Running  Lamp Relay Output - Coil
A12      LT GRN          1037           Serial Data Signal  (Class 2)
B1         BLK           1850           Ground
B2         PNK             39           Fused Ignition 1  Feed
B3       RED/WHT          812           Reference Voltage  Feed - 12 Volt
B4         ORN            461           Serial Data Signal
B5         --              --           Not Used
B6       LT BLU            14           LH Turn Signal Lamp  Input
B7       DK BLU            15           RH Turn Signal Lamp  Input
B8         --              --           Not Used
B9         BRN             41           Fused Ignition 3  Output
B10      LT BLU          1134           Park Brake Switch  Signal
B11      BLK/WHT          238           Seat Belt Switch  Signal
B12      LT BLU           553           Transmission Shift  Select Switch Output

C-2 Body Control Module

Connector Part Information

12110206
24 Way F Micro-Pack 100 Series (GRY)

Code:

Pin     Wire Color    Circuit No.       Function
A1         YEL            710           Serial Data Signal
A2       ORN/BLK         1057           Sensor Return  (Passlock)
A3       GRY/BLK          690           Courtesy Lamp Relay  Output (Coil)
A4       LT GRN          1381           LCD Dimming Signal
A5         WHT           1080           Park Lamp Relay  Output (Coil)
A6         --             --            Not Used
A7      DK GRN/WHT       1317           Fog Lamp Relay  Output (Coil)
A8-A10     --              --           Not Used
A11        WHT            352           Headlamp Relay Feed  (Coil)
A12      PPL/WHT         1382           LED Dimming Signal
B1      DK GRN/WHT        817           Vehicle Speed  Signal
B2         --              --           Not Used
B3         YEL           1836           Passlock Sensor  Signal
B4         --              --           Not Used
B5         PPL            524           Headlamp Dimmer  Switch Output (High Beam)
B6         BRN           2409           Fused Interior Park  Lamps Feed
B7-B8      --              --           Not Used
B9       LT  GRN           80           Key  Reminder Switch Signal
B10        --              --           Not Used
B11     DK BLU/WHT        727           Door Latch Switch  Signal (Uplevel)
B12        ORN           1732           Inadvertant Power  Relay Status

C-3 Body Control Module

Connector Part Information

12191375
16 Way F Micro-Pack 100 Series (PPL)

Code:

Pin     Wire Color    Circuit No.       Function
A1      DK BLU/WHT        149           Cargo Lamp Switch  Input
A2      DK BLU/WHT       1495           Courtesy Lamp  Switch Output
A3         BRN           1356           Flash to Pass  Switch Signal
A4         GRY            705           Reference  Voltage Feed - 5 Volt
A5         GRY              8           Instrument Panel  Lamp Feed
A6         WHT            278           Photocell Signal
A7-B1      --              --           Not Used
B2         ORN             54           Door Jamb Switch  Signal - Passenger
B2      LT GRN/BLK        394           Door Handle Switch  Signal - LH Front (Uplevel)
B3        LT GRN          262           Door Key Lock  Cylinder  Switch Signal - Driver (Uplevel)
B4         TAN            126           Door Latch Switch  Signal - LH Front
B5         ORN            192           Fog Lamp Switch  Input
B6         PPL            328           Interior Lamp  Defeat Switch Output
B7-B8      --              --           Not Used

Last edited by SnakeOiler; 05-04-2010 at 12:51 AM.