Contents Wiring diagrams Section: Communication Devices All sections

Computer/integrating Systems: Specifications Chevrolet RV Cutaway G3500

Communication Devices 7 illustrations ~947 words

Fastener Tightening Specifications

ApplicationSpecification
MetricEnglish
Body Control Module Bracket Bolts2 N.m18 lb in

Fastener Tightening Specifications

Computer/Integrating Systems Schematic Icons Icon Icon Definition CAUTION: When performing service on or near the SIR components or the SIR wiring, the SIR system must be disabled. Refer to SIR Disabling and Enabling Zones. Failure to observe the correct procedure could cause deployment of the SIR components, personal injury, or unnecessary SIR system repairs

Scheme 1

Scheme 1: Body Control System Schematics

Scheme 2

Scheme 2

Scheme 3

Scheme 3: Data Link Connector (DLC) Schematics

Scheme 4

Scheme 4: Retained Accessory Power (RAP) Schematics

Scheme 5

Scheme 5: Computer/Integrating Systems Component Views
CalloutComponent Name
1C221
2Data Link Connector (DLC)
3Stop Lamp Switch Connector

Scheme 6

Scheme 6
CalloutComponent Name
1Inflatable Restraint Sensing and Diagnostic Module (SDM) Connector
2C318
3G301
4G302
5G303
6SP200
7C222 (YF7)
8Seat Belt Pretentioner Connector - LF (Light Duty - Early Production)
9C300 (Light Duty - Early Production)
10Fuse Block Body - C5 (YF7)
11Fuse Block Body - C3

Scheme 7

Scheme 7
CalloutComponent Name
1Body Control Module (BCM)

Body Control Module (BCM) - C1 Connector Part Information 12177194 6-Way F Metri-Pack 150 Series (NA) Pin Wire Color Circuit No. Function A YE 1491 Backlight Lamps Control B PU/WH 1382 LED Dimming Signal C OG 4040 Battery Positive Voltage D OG 1732 Inadvertent Power Supply Voltage E BN/WH 230 Instrument Panel Lamps Dimming Control F RD/WH 2240 Battery Positive Voltage

Body Control Module (BCM) - C2 Connector Part Information 12110088 24-Way F Micro-Pack 100 Series (GY) Pin Wire Color Circuit No. Function A1-A2 - - Not Used A3 L-BU 244 Passenger Door Unlock Relay Control (AU3) A4 PK/WH 1970 Headlamp Low Beam Relay Control A5 WH 111 Hazard Switch Signal A6 D-BU 245 Door Lock Relay Control (AU3) A7 L-GN 1391 Driver Door Unlock Relay Control (AU3) A8 L-BU 1344 Cargo Door Unlock Relay Control (AU3) A9-A10 - - Not Used A11 OG/WH 812 12-Volt Reference A12 RD/WH 1140 Battery Positive Voltage B1 TN/WH 1969 Headlamp High Beam Relay Control B2 WH 1080 Park Lamp Relay Control B3 TN 755 RAP Relay Coil Control (A31) B4 L-GN/BK 592 DRL Low Control B5 - - Not Used B6 BK/WH 351 Ground B7 TN 1835 Security System Sensor Low Reference B8 PK 1348 Headlamp On Indicator Supply Voltage B9 TN 28 Horn Relay Control B10 - - Not Used B11 GY 705 5-Volt Reference B12 L-GN 1037 Class 2 Serial Data

Body Control Module (BCM) - C3 Connector Part Information 12160778 24-Way F Micro-Pack 100 Series (BN) Pin Wire Color Circuit No. Function A1-A5 - - Not Used A6 YE 1836 Security System Sensor Signal A7 - - Not Used A8 D-GN 306 DRL On/Off Signal A9-A10 - - Not Used A11 PU 328 Interior Lamp Defeat Switch Signal A12 - - Not Used B1 YE 710 Not Used B2 BN/WH 301 Park Lamp Switch On Signal B3-B5 - - Not Used B6 BK/WH 351 Ground B7 - - Not Used B8 OG/BK 2090 Dimming Input B9 L-GN 11 Headlamp Dimmer Switch Signal B10 - - Not Used B11 L-BU 1788 Tow/Haul Switch Signal B12 - - Not Used

Body Control Module (BCM) - C4 Connector Part Information 12110206 24-Way F Micro-Pack 100 Series (L-BU) Pin Wire Color Circuit No. Function A1 L-GN 80 Key In Ignition Switch Signal A2 YE 307 Headlamp Switch Flash to Pass Signal A3 PK 1020 Ignition 0 Voltage A4 PK 39 Ignition 1 Voltage A5 L-GN 1177 Door Open Switch Signal A6 - - Not Used A7 L-BU 1134 Park Brake Switch Signal A8-A9 - - Not Used A10 YE/BK 1181 Rear Door Open Switch Signal (Passenger/Cargo) A11 - - Not Used A12 WH 103 Headlamp Switch Headlamps On Signal B1-B2 - - Not Used B3 YE 343 Accessory Voltage B4 TN 126 Left Front Door Open Switch Signal B5 L-BU 195 Door Lock Control (AU3) B6 GY/BK 2226 Dimming Return B7-B8 - - Not Used B9 D-BU/WH 1495 Courtesy Lamps On Signal B10 WH 194 Door Unlock Control (AU3) B11-B12 - - Not Used

Body Control Module (BCM) - C5 Connector Part Information 12177195 6-Way F Metri-Pack 150 Series (BK) Pin Wire Color Circuit No. Function A-C - - Not Used D RD/WH 2140 Battery Positive Voltage E D-BU/WH 149 Courtesy Lamp Supply Voltage - w/o YF7 GY/BK 690 Courtesy Lamp High Control - w/YF7 F L-GN 24 Backup Lamp Supply Voltage

Body Control Module (BCM) - C6 (PRP) Connector Part Information 12191375 16-Way F Micro-Pack 100 Series (PU) Pin Wire Color Circuit No. Function A1 D-BU/WH 149 Dome Fluorescent Work Lamp Signal (UF2) A2-A6 - - Not Used A7 L-BU 1344 Access Panel Right Side Relay Control A8 GY/BK 690 Dome Fluorescent Work Lamp Relay Control (UF2) B1-B6 - - Not Used B7 L-GN 1391 Access Panel Left Side Rear Relay Control B8 L-BU 244 Access Panel Left Side Front Relay Control

Data Link Connector (DLC) Connector Part Information 12110250 16-Way F Metri-Pack 150 Series (BK) Pin Wire Color Circuit No. Function 1 - - Not Used 2 PU 1132 Class 2 Serial Data 3 - - Not Used 4 BK/WH 351 Ground 5 BK/WH 351 Ground 6-15 - - Not Used 16 RD/WH 640 Battery Positive Voltage

SP200 Connector Part Information 12176461 12-Way F GT 150 Splice Saver (BK) Pin Wire Color Circuit No. Function A PU 1132 Class 2 Serial Data B D-GN 1049 Class 2 Serial Data C - - Not Used D GY 1036 Class 2 Serial Data E L-BU 1122 Class 2 Serial Data F D-BU 1128 Class 2 Serial Data G OG 1044 Class 2 Serial Data H YE 1127 Class 2 Serial Data (UE1) J PK 1045 Class 2 Serial Data (AU0) K-L - - Not Used M L-GN 1037 Class 2 Serial Data

Begin the system diagnosis with Diagnostic System Check - Vehicle in Vehicle DTC Information. The Diagnostic System Check - Vehicle will provide the following information

  1. The identification of the control modules which are not communicating.
  2. The identification of any stored diagnostic trouble codes (DTCs) and their status.

The use of the Diagnostic System Check - Vehicle will identify the correct procedures to begin vehicle diagnosis. These must be performed before system DTC or symptom diagnosis.