Instrument Panel Module (IPM) X3

2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6SECTION Instrument Panel Module (IPM) X3
WARNING: This page is about a different car, the 2008 Cadillac STS. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Instrument Panel Module (IPM) - X3 Connector End View
GM1468163Courtesy of GENERAL MOTORS CORP.
Instrument Panel Module (IPM) X3

Pin Wire Circuit Function
1 0.35 RD/WH 1140 Battery Positive Voltage
2 0.35 RD/WH 3340 Battery Positive Voltage
3 0.35 BK/WH 151 Signal Ground
4 0.35 TN 2501 High Speed GMLAN Serial Data (-) (1) (LC3)
5 0.35 TN/BK 2500 High Speed GMLAN Serial Data (+) (1) (LC3)
6 0.35 D-GN 44 Instrument Panel Lamp Dimmer Switch Signal (-UV6)
7 0.35 PK 5076 Current Sensor Supply Voltage
8 0.35 WH 5075 Current Sensor Signal
9 0.35 BN 5077 Current Sensor Low Reference
10 0.35 BK/WH 451 Signal Ground
11 0.35 L-BU 187 Rear Fog Lamp Switch Signal (TT7/TT8)
12 0.35 OG 192 Front Fog Lamp Switch Signal
13 0.35 L-BU/WH 1414 Left Front Turn Signal Switch Signal
14 0.35 TN/WH 99 Windshield Washer Fluid Level Sensor Signal
15 0.35 TN 2501 High Speed GMLAN Serial Data (-) (1)
16 0.35 TN/BK 2500 High Speed GMLAN Serial Data (+) (1)
17 0.35 BN 5360 Brake Apply Sensor Low Reference
18 0.35 D-BU 1796 Steering Column Radio Control Signal
19 0.35 L-BU/BK 1688 5-Volt Reference (-UV6)
20 0.35 GY 1884 Cruise Control Set/Coast/Resume/Accelerate Switch Signal
21 0.35 D-GN 5060 Low Speed GMLAN Serial Data
22 0.35 D-GN 5060 Low Speed GMLAN Serial Data
23 - - Not Used
24 0.35 L-BU 1485 Flash To Pass Switch Supply Voltage
25 0.35 D-BU/WH 1415 Right Front Turn Signal Switch Signal
26 0.35 BN/WH 1571 Traction Control Switch Signal (2)
27 0.35 WH 5359 Brake Apply Sensor Supply Voltage
28 0.35 YE 5361 Brake Apply Sensor Signal
29 0.35 L-GN/WH 5723 Ignition Mode Switch Mode Voltage
30 - - Not Used
Connector Part Information 
  • OEM: 1318758-1
  • Service: 88988291
  • Description: 30-Way M AMP Hybrid (NA)
Terminal Part Information 
  • Pins: 1, 10
  • Terminal/Tray: 7116-4020/11
  • Core/Insulation Crimp: E/C
  • Release Tool/Test Probe: 15315247/J-35616-18 (BK)
  • Pins: 2-9, 11-22, 24-29
  • Terminal/Tray: 1123343-2/7
  • Core/Insulation Crimp: J/J
  • Release Tool/Test Probe: J-38125-24/J-35616-64B (L-BU)
RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

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.