GM Service Manual Online
For 1990-2009 cars only
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Figure 1:

Module Power, Ground, and Serial Data, Pump Motor and Brake Switch - JH6 Over 8600 GVW
Object Number: 2013825 Size: FS
Master Electrical Component List
ABS Description and Operation W JH6
Control Module References
JH6 Over 8600 GVW
Figure 2:

JH6 Over 8600 GVW
Object Number: 1907004 Size: FS
Master Electrical Component List
ABS Description and Operation W JH6
Control Module References
Module Power, Ground and Serial Data, Pump Motor and Brake Switch - JH6 Over 8600 GVW