2008 Chevrolet Chevy Express G2500, Van Cargo Extended, 6.0 KFACTORY OEM SERVICE PROCEDURE

Generator X1

Fig 1: Generator X1 Connector End View
GM647991Courtesy of GENERAL MOTORS CORP.
Generator X1

Pin Wire Circuit Function
B 0.5 OG 225 Generator Turn On Signal (Gas)
B 0.8 OG 225 Generator Turn On Signal (Diesel)
C 0.5 GY 23 Generator Field Duty Cycle Signal (Gas)
C 0.8 GY 23 Generator Field Duty Cycle Signal (Diesel)
Connector Part Information 
  • OEM: 15355066
  • Service: 15355066
  • Description: 2-Way F Metri-Pack 150 Series, Sealed (BG)
Terminal Part Information 
  • Terminal/Tray: 12048074/2
  • Core/Insulation Crimp: E/1
  • Release Tool/Test Probe: 12094429/J-35616-14 (GN)
Factory Service Tools

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

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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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