2008 Hummer H3 Base, AutomaticFACTORY OEM SERVICE PROCEDURE

Generator Battery Control Module

Fig 1: Generator Battery Control Module Connector End View
GM632344Courtesy of GENERAL MOTORS CORP.
Generator Battery Control Module

Pin Wire Circuit Function
A 0.5 OG 3040 Battery Positive Voltage
B 0.5 GY 23 Generator Field Duty Cycle Signal
C 0.5 OG 3140 Battery Positive Voltage
D 0.5 RD 225 Generator Turn On Signal
E - - Not Used
F 0.5 BK/WH 451 Ground
G - - Not Used
H 0.5 BK/WH 451 Ground
J 0.5 PU 5428 Generator Regulator Control
K 0.5 PU 1807 Class 2 Serial Data
Connector Part Information 
  • OEM: 15326842
  • Service: 15326843
  • Description: 10-Way F GT 150 Series Sealed (BK)
Terminal Part Information 
  • Terminal/Tray: 12191819/8
  • Core/Insulation Crimp: Pins A, C, G, H, K - E/A
  • Core/Insulation Crimp: Pins B, D, F - 2/A
  • Release Tool/Test Probe: 15315247/J-35616-2A (GY)
Factory Service Tools

Use the Manual With the Right Hardware

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

Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.

Shop Manual-Ready ToolsCompare Repair QuoteQuote Shield Pro

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.

Rather have a pro handle this?

A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.

Comes to youSame-day available12-month warranty
Get a Free Quote

No obligation. See pricing before you book.