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.

Check for poor connections at PCM/TCM and transmission pass-thru connector.

Fig 1: CODE 73, Schematic, Force Motor Current (Current Error)

Courtesy of GENERAL MOTORS CORP.

Fig 2: CODE 73, Flow Chart, Force Motor Current (Current Error)

Courtesy of GENERAL MOTORS CORP.