Diagnostic Aids

WARNING: This page does not describe the selected car, but rather 24 other vehicles, including the 1992 GMC Yukon, 1992 GMC Vandura Special, 1992 GMC Vandura, 1992 GMC Value Van, and 1992 GMC Suburban. However, it is still accessible from the selected car via links, so may be relevant.

If code is intermittent, see INTERMITTENTS in TESTS W/O CODES article.

Fig 1: CODE 86, Schematic, Shift Solenoid "B" Stuck "ON"

Courtesy of GENERAL MOTORS CORP.

Fig 2: CODE 86, Flow Chart, Shift Solenoid "B" Stuck "ON"

Courtesy of GENERAL MOTORS CORP.