Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSOLDSMOBILE2004BRAVADA AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1000 (BATTERY, CHARGING SYSTEM & STARTING SYSTEM)COMPONENT LOCATORENGINE ELECTRICAL CONNECTORS
2004 Oldsmobile Bravada AWD
Engine Electrical Connectors
2004 Oldsmobile Bravada AWDSECTION Engine Electrical Connectors
WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
Auxiliary Battery Relay (TP2)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | BRN | 241 | Ignition 3 Voltage |
| B | BLK | 550 | Ground |
Battery Cut Off Switch (HP2)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| 1 | WHT | 1-BCO | Ground |
| 2 | WHT | 2-BCO | BCO Status |
| 3 | WHT | 3-BCO | BCO Control - A |
| 4 | WHT | 4-BCO | BCO Control - B |
| 5 | WHT | 5-BCO | Battery Positive Voltage |
Clutch Start Switch (M/T)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | PPL | 420 | Cruise Control Release Signal |
| B | BRN/WHT | 379 | CPP Switch Signal |
| C | PNK | 639 | Ignition 1 Voltage |
| D | DK GRN | 1433 | Clutch Start Switch Signal |
| E | BRN | 441 | Ignition 3 Voltage |
| F | GRY | 48 | CPP Switch Signal |
Current Sensor (HP2)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| 1 | WHT | 1-CS | Current Sensor Signal - A |
| 2 | WHT | 2-CS | Current Sensor Signal - B |
| 3 | WHT | 3-CS | Compensating Coil Voltage |
| 4 | WHT | 4-CS | Low Reference |
Energy Storage Box (ESB) Fan (HP2)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| 1 | WHT | 1-FAN | Fan Speed Signal |
| 2 | WHT | 2-FAN | Low Reference |
| 3 | - | - | Not Used |
| 4 | WHT | 4-FAN | 5 Volt Reference |
Energy Storage Control Module (ESCM) - C1 (HP2)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| 1 | WHT | 1-NTC-1 | Temperature Sensor Signal - 1 |
| 2 | WHT | 1-NTC-2 | Temperature Sensor Signal - 2 |
| 3 - 7 | - | - | Not Used |
| 8 | WHT | 2-BCO | BCO Control - A |
| 9 | WHT | 4-BCO | BCO Control - B |
| 10 | WHT | 2-BCO | BCO Status |
| 11 | WHT | 1-BCO | Ground |
| 12 | WHT | 2-CS | Current Sensor Signal - A |
| 13 | WHT | 3-CS | Compensating Coil Voltage |
| 14 | WHT | 5-BCO | Battery Positive Voltage |
| 15 | WHT | 2-FAN | Low Reference |
| 16 | - | - | Not Used |
| 17 | WHT | 2-NTC-2 | Low Reference |
| 18 | WHT | 2-NTC-1 | Low Reference |
| 19 | WHT | 2-NTC-3 | Low Reference |
| 20 | WHT | 1-NTC-3 | Temperature Sensor Signal - 3 |
| 21 | WHT | 1-R2 | Voltage Sensor Signal - 2 |
| 22 | - | - | Not Used |
| 23 | WHT | 1-R1 | Voltage Sensor Signal - 1 |
| 24 | WHT | 1-R4 | Voltage Sensor Signal - 4 |
| 25 | WHT | 1-R3 | Voltage Sensor Signal - 3 |
| 26 | - | - | Not Used |
| 27 | WHT | 1-CS | Current Sensor Signal - A |
| 28 | WHT | 4-CS | Low Reference |
| 29 | WHT | 4-FAN | 5 Volt Reference |
| 30 | WHT | 1-FAN | Fan Speed Signal |
Energy Storage Control Module (ESCM) - C2 (HP2)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| 1 - 14 | - | - | Not Used |
| 15 | WHT | 1-CAR | High Speed GMLAN Serial Data (+) |
| 18 | WHT | 7-CAR | Ignition 1 Voltage |
| 19 - 23 | - | - | Not Used |
| 24 | WHT | GND-CAR | Ground |
| 25 - 38 | - | - | Not Used |
| 39 | WHT | 2-CAR | High Speed GMLAN Serial Data (-) |
| 40 - 41 | - | - | Not Used |
| 42 | WHT | 8-CAR | Ignition 0 Voltage |
| 43 - 47 | - | - | Not Used |
| 48 | WHT | 3-CAR | Battery Positive Voltage |
Energy Storage Control Module (ESCM) - C3 (HP2)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| L - H | - | - | Not Used |
Generator - Gas (W/SBA)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | DK BLU | 5668 | Engine On Signal |
| B | BRN | 25 | Charge Indicator Control |
| C | GRY | 23 | Generator Field Duty Cycle Signal |
| D | - | - | Not Used |
Generator - Gas (W/O SBA)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | - | - | Not Available |
| B | BRN | 25 | Charge Indicator Control |
| C | GRY | 23 | Generator Field Duty Cycle Signal |
| D | - | - | Not Available |
Generator - Left - Diesel
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | - | - | Not Available |
| B | BRN | 25 | Charge Indicator Control |
| C | GRY | 23 | Generator Field Duty Cycle Signal |
| D | - | - | Not Available |
Generator - Right - Diesel
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | - | - | Not Available |
| B | BRN | 2524 | Generator 2 Turn On Signal |
| C-D | - | - | Not Available |
Hybrid Control Module (HCM) (W/HP2)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| 1 | ORN | 1940 | Battery Positive Voltage |
| 2 | PNK | 1020 | Ignition 0 Voltage |
| 3 - 7 | - | - | Not Used |
| 8 | PNK/BLK | 109 | Hood Ajar Switch Signal |
| 9 | PPL | 5681 | APO Switch Signal |
| 10 - 11 | - | - | Not Used |
| 12 | PNK | 1939 | Ignition 1 Voltage |
| 13 - 27 | - | - | Not Used |
| 28 | PPL/WHT | 5687 | Class 2 Serial Data |
| 29 | BLK/WHT | 451 | Ground |
| 30 - 33 | - | - | Not Used |
| 34 | ORN/BLK | 1057 | Low Reference |
| 35 - 39 | - | - | Not Used |
| 40 | TAN/WHT | 2500 | High Speed GMLAN Serial Data (+) |
| 41 | TAN | 2501 | High Speed GMLAN Serial Data (-) |
| 42 | - | - | Not Used |
| 43 | BLK/WHT | 451 | Ground |
| 44 | - | - | Not Used |
| 45 | YEL | 5680 | APO Switch Indicator Control |
| 46 - 47 | - | - | Not Used |
| 48 | PNK/WHT | 5537 | Transmission Pump Relay Control |
| 49 | PPL/WHT | 5539 | Power Maintain Relay Coil Control |
| 50 | - | - | Not Used |
| 51 | WHT | 5542 | Auxiliary Heater Pump Relay Control |
| 52 | BRN/WHT | 5682 | Low Reference |
| 53 | - | - | Not Used |
| 54 | TAN/WHT | 2500 | High Speed GMLAN Serial Data (+) |
| 55 | TAN | 2501 | High Speed GMLAN Serial Data (-) |
| 56 | - | - | Not Used |
Starter/Generator Control Module SGCM - C1 (HP2)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | - | - | Not Used |
| B | - | - | Not Used |
Starter/Generator Control Module SGCM - C2 (HP2)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | BLK | 50 | Ground |
| B | RED | 102 | Battery Positive Voltage |
Starter/Generator Control Module SGCM - C3 (HP2)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | RED | 5084 | High Voltage Battery (+) |
| B | BLK | 5691 | High Voltage Battery (-) |
Starter/Generator Control Module SGCM - C4 (HP2)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| 1 | TAN/WHT | 2500 | High Speed GMLAN Serial Data (+) |
| 2 | TAN/WHT | 2500 | High Speed GMLAN Serial Data (+) |
| 3 - 6 | - | - | Not Used |
| 7 | YEL/BLK | 625 | Starter Enable Relay Control |
| 8 | PNK | 1020 | Ignition 0 Voltage |
| 9 | LT BLU/BLK | 647 | Medium Resolution Engine Speed Signal |
| 10 - 11 | - | - | Not Used |
| 12 | WHT | 2368 | Cooling Fan Clutch Supply Voltage |
| 13 | TAN | 2501 | High Speed GMLAN Serial Data (-) |
| 14 | TAN | 2501 | High Speed GMLAN Serial Data (-) |
| 15 - 20 | - | - | Not Used |
| 21 | WHT | 121 | Engine Speed Signal |
| 22 - 23 | - | - | Not Used |
| 24 | PNK | 2014 | Coolant Pump Relay Control |
Starter/Generator Control Module SGCM - C5 (HP2)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | - | - | Not Used |
| B | WHT | 5685 | APO Neutral |
| C | ORN | 5595 | High Voltage Interlock Loop Signal - 2 |
| D | BLK | 50 | Ground |
| E | PPL | 5087 | High Voltage Interlock Loop Signal - 1 |
| F | DK GRN | 5686 | Ground |
| G | BLK | 5683 | APO Phase A |
Temperature Sensor - Battery 1 (HP2)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| 1 | WHT | 1-NTC-1 | Temperature Sensor Signal - 1 |
| 2 | WHT | 2-NTC-1 | Low Reference |
Temperature Sensor - Battery 2 (HP2)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| 1 | WHT | 1-NTC-2 | Temperature Sensor Signal - 2 |
| 2 | WHT | 2-NTC-2 | Low Reference |
Temperature Sensor - Battery 3 (HP2)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| 1 | WHT | 1-NTC-3 | Temperature Sensor Signal - 3 |
| 2 | WHT | 2-NTC-3 | Low Reference |
Voltage Sensor - 1 (HP2)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | WHT | 1-R1 | Voltage Sensor Signal - 1 |
Voltage Sensor - 2 (HP2)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | WHT | 1-R2 | Voltage Sensor Signal - 2 |
Voltage Sensor - 3 (HP2)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | WHT | 1-R3 | Voltage Sensor Signal - 3 |
Voltage Sensor - 4 (HP2)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | WHT | 1-R4 | Voltage Sensor Signal - 4 |
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.