2004 Hydraulics Technical 
Tomorrow's Technician
FEBRUARY 5, 2024
The days are gone when transmissions were purely mechanical and hydraulic and all you really needed was a set of high-pressure gauges to check line pressure and a vacuum gauge to check the engine’s intake vacuum and the integrity of the vacuum modulator. The topology for these networks is typically a loop.
Tomorrow's Technician
NOVEMBER 21, 2023
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. These components were prone to failure and are expensive to manufacture.
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