FixVault

Diagnostic Procedure

Fig 1: DTC P0402: EGR Flow Excessive (Steps 1-8)
G00255548Courtesy of GENERAL MOTORS CORP.
Fig 2: DTC P0402: EGR Flow Excessive (Steps 9 & 10)
G00255549Courtesy of GENERAL MOTORS CORP.
Fig 3: DTC P0402: EGR Flow Excessive (Steps 11-16)
G00255550Courtesy of GENERAL MOTORS CORP.
Fig 4: DTC P0402: EGR Flow Excessive (Steps 17-20)
G00255551Courtesy of GENERAL MOTORS CORP.