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 MANUALSCHEVROLET2006SUBURBAN C2500, 6.0 UREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1041 (ENGINE CONTROLS AND FUEL - 6.6L (LMM) - INTRODUCTION (2 OF 2))COMPONENT LOCATORENGINE CONTROLS CONNECTORSGLOW PLUG CONTROL MODULE (GPCM) X2
2006 Chevrolet Suburban C2500, 6.0 U
Glow Plug Control Module (GPCM) X2
2006 Chevrolet Suburban C2500, 6.0 USECTION Glow Plug Control Module (GPCM) X2
WARNING: This page is about a different car, the 2007 GMC Sierra, 2007 GMC Cab & Chassis Sierra, 2007 Chevrolet Silverado, and 2007 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
Glow Plug Control Module (GPCM) X2 Connector Parts Information
Connector Part Information
|
Terminal Part Information
|
Glow Plug Control Module (GPCM) X2 Connector Terminal Identification
| Pin | Wire Color | Circuit No. | Function |
|---|---|---|---|
| 1 | 2 RD/WH | HB13 | Glow Plug 3 Supply Voltage |
| 2 | 2 WH/GN | HB12 | Glow Plug 2 Supply Voltage |
| 3 | 2 RD/GN | HB11 | Glow Plug 1 Supply Voltage |
| 4 | 2 WH/YE | HB14 | Glow Plug 4 Supply Voltage |
| 5 | - | - | Not Used |
| 6 | 2 WH/RD | HB18 | Glow Plug 8 Supply Voltage |
| 7 | 2 RD/L-GN | HB15 | Glow Plug 5 Supply Voltage |
| 8 | 2 WH/L-GN | HB16 | Glow Plug 6 Supply Voltage |
| 9 | 2 PK | HB17 | Glow Plug 7 Supply Voltage |
| 10-25 | - | - | Not Used |
| 26 | 0.75 YE | IC182 | IAH Command 2 |
| 27 | 0.75 RD | IC185 | IAH Feedback Signal |
| 28 | 0.75 BK | IC180 | IAH Temperature Signal |
| 29 | 0.75 PK | IC183 | IAH Current Signal |
| 30 | 0.75 TN | IC184 | IAH Voltage Signal |
| 31 | 1 OG | IC181 | IAH Command 1 |
| 32-42 | - | - | Not Used |
| 43 | 0.75 TN | HB01 | High Speed GMLAN Serial Data Bus (-) |
| 44 | 0.75 TN/BK | HB20 | High Speed GMLAN Serial Data Bus (+) |
| 45 | 0.75 TN | HB05 | High Speed GMLAN Serial Data Bus (-) |
| 46 | 0.75 TN/BK | HB06 | High Speed GMLAN Serial Data Bus (+) |
| 47-50 | - | - | Not Used |
| 51 | 0.75 RD | HB03 | Ground |
| 52 | 0.75 PK | HB02 | Ignition 1 Voltage |
| 53 | 1 D-BU | HB04 | Accessory Wakeup Serial Data |
RENDER: 1.0x
NO RELATED
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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.