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Home >> GMC >> 1983 >> Forward Control 5.7 M, Automatic, 400/M40 >> Repair and Diagnosis (Single Page) >> Brakes >> Mechanical - Hydraulic >> Disc & Drum >> Trouble Shooting >> Hydro-Boost

Trouble Shooting: Hydro-Boost

NOTE: Use the following diagnostic charts to diagnose the Hydro- Boost system.
Fig 1: Procedure for Slow or Incomplete Pedal
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Fig 2: Procedure for Excessive Brake Pedal Effort - 1 of 2
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Fig 3: Procedure for Excessive Brake Pedal Effort - 2 of 2
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