2008 Chevrolet Chevy Express G3500, Van Passenger ExtendedFACTORY OEM SERVICE PROCEDURE

Radio X1

Fig 1: Radio X1 Connector End View
GM1590072Courtesy of GENERAL MOTORS CORP.
Radio X1

Pin Wire Circuit Function
1 1 RD/WH 340 Battery Positive Voltage
2 0.8 D-BU 1857 Left Front Midrange Speaker Output (+)
3 0.8 OG 1853 Right Front Midrange Speaker Output (+)
4-6 - - Not Used
7 0.35 YE 6817 LED Backlight Dimming Control
8 1 BK/WH 351 Ground
9 0.8 L-BU 1957 Left Front Midrange Speaker Output (-)
10 0.8 D-GN 1953 Right Front Midrange Speaker Output (-)
11-12 - - Not Used
13 0.35 D-GN 5060 Low Speed GMLAN Serial Data
14 - - Not Used
Connector Part Information 
  • OEM: 15464950
  • Service: See Catalog
  • Description: 14-Way F GT 150 Micro 64 Modular (BK)
Terminal Part Information 
  • Pins: 1, 8
  • Terminal/Tray: 12191812/19
  • Core/Insulation Crimp: C/A
  • Release Tool/Test Probe: 15315247/J-35616-2A (GY)
  • Pins: 2, 3, 7, 7, 9, 10, 13
  • Terminal/Tray: 15359541/4
  • Core/Insulation Crimp: M/M
  • Release Tool/Test Probe: 15381651-2/J-35616-64B (L-BU)
Factory Service Tools

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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.

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