2004 Hydraulics Trucking 
Brake & Front End
NOVEMBER 21, 2023
Unlike 4×4 truck systems of the day, these systems were always engaged. Around 2004, many manufacturers of AWD systems started to abandon complex transfer case center differentials in favor of less expensive clutches. The brake hydraulic control module on these vehicles has at least 12 valves.
Tomorrow's Technician
NOVEMBER 21, 2023
Unlike 4×4 truck systems of the day, these systems were always engaged. Around 2004, many manufacturers of AWD systems started to abandon complex transfer case center differentials in favor of less expensive clutches. The brake hydraulic control module on these vehicles has at least 12 valves.
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