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 1827 (COMPONENT LOCATIONS - ELECTRICAL CENTER IDENTIFICATION VIEWS)ELECTRICAL CENTER IDENTIFICATION VIEWSJUNCTION BLOCK - LEFT I/P X2 (EXCEPT MEX)
2006 Chevrolet Suburban C2500, 6.0 U
Junction Block - Left I/P X2 (except MEX)
2006 Chevrolet Suburban C2500, 6.0 USECTION Junction Block - Left I/P X2 (except MEX)
WARNING: This page is about a different car, the 2010 GMC Sierra, 2010 GMC Cab & Chassis Sierra, 2010 Chevrolet Silverado, and 2010 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
Junction Block - Left I/P X2 (except MEX)
| Pin | Wire | Circuit | Function |
|---|---|---|---|
| A1 | 0.35 PK | 739 | Ignition 1 Voltage |
| A2 | 0.35 YE | 43 | Accessory Voltage |
| 0.35 YE | 43 | Accessory Voltage (except YE9, HP2, or YE9 with AN3 or DL3) | |
| A3-A4 | - | - | Not Used |
| A5 | 0.8 RD/WH | 1040 | Battery Positive Voltage (except Y91 or 853) |
| B1 | 3 RD/WH | 2340 | Battery Positive Voltage |
| B2-B4 | - | - | Not Used |
| B5 | 0.5 RD/WH | 3240 | Battery Positive Voltage (except Y91) |
| C1 | 0.5 YE/BK | 5813 | Park Enable Supply Voltage (YE9 or Y91) |
| C2 | 3 BK | 2550 | Ground (Y91) |
| C3 | 0.5 RD/WH | 340 | Battery Positive Voltage (except Y91 or 853) |
| C4-C5 | - | - | Not Used |
| D1 | 2 BK | 1050 | Ground |
| D2 | - | - | Not Used |
| D3 | 0.8 RD/WH | 4540 | Battery Positive Voltage |
| 0.8 RD/WH | 4540 | Battery Positive Voltage (PTO or EXP) | |
| 0.5 RD/WH | 4540 | Battery Positive Voltage (8S8) | |
| D4-D5 | - | - | Not Used |
| E1 | 0.5 OG/BK | 5285 | Adjustable Pedals Relay Rearward Control (YE9 or Y91) |
| E2 | 0.5 RD/WH | 740 | Battery Positive Voltage (YE9 or Y91) |
| E3 | 0.35 YE | 6812 | Out of Park Signal (YE9 or Y91) |
| G1 | 0.5 PU | 5286 | Adjustable Pedals Relay Forward Control (YE9 or Y91) |
| H1 | 0.35 D-GN/WH | 817 | Vehicle Speed Signal |
| 0.5 D-GN/WH | 817 | Vehicle Speed Signal (Y91) | |
| J1 | - | - | Not Used |
| K1 | - | - | Not Used |
| K2 | 0.35 YE | 6817 | LED Backlight Dimming Control |
| K3 | 0.35 D-GN | 5060 | Low Speed GMLAN Serial Data |
| L1-L2 | - | - | Not Used |
| L3 | 0.35 YE | 6817 | LED Backlight Dimming Control (except 853) |
| L4 | 0.35 YE | 6817 | LED Backlight Dimming Control |
| L5 | 0.5 TN/BK | 2500 | High Speed GMLAN Serial Data Bus (+) |
| 0.5 TN/BK | 2500 | High Speed GMLAN Serial Data Bus (+) | |
| M1-M2 | - | - | Not Used |
| M3 | 0.35 YE | 6817 | LED Backlight Dimming Control |
| 0.35 YE | 6817 | LED Backlight Dimming Control (C67 or C42) | |
| M4 | - | - | Not Used |
| M5 | 0.5 TN | 2501 | High Speed GMLAN Serial Data Bus (-) |
| 0.5 TN | 2501 | High Speed GMLAN Serial Data Bus (-) | |
| N1 | 0.35 D-BU | 2307 | Passenger Air Bag On Indicator Control (AL0 or C99) |
| N2 | - | - | Not Used |
| N3 | 0.35 YE | 6817 | LED Backlight Dimming Control (JL1 or HP2) |
| 0.35 YE | 6817 | LED Backlight Dimming Control (PTO) | |
| N4 | 0.35 YE | 6817 | LED Backlight Dimming Control |
| 0.35 YE | 6817 | LED Backlight Dimming Control | |
| N5 | 0.5 TN | 2501 | High Speed GMLAN Serial Data Bus (-) |
| P1 | 0.35 PU | 5234 | Passenger Seat Belt Indicator (AL0 or HP2) |
| P2 | - | - | Not Used |
| P3 | 0.35 D-GN | 2308 | Passenger Air Bag Off Indicator Control (AL0, C99 or HP2) |
| P4 | 3 RD/WH | 3740 | Battery Positive Voltage (except Y91) |
| P5 | 0.5 TN/BK | 2500 | High Speed GMLAN Serial Data Bus (+) |
Connector Part Information
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Terminal Part Information
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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.