Test Description

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2003 GMC Yukon XL, 2003 GMC Yukon, 2003 Chevrolet Tahoe, 2003 Chevrolet Suburban, and 2003 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

The number below refers to the step number on the diagnostic table.

3. This step tests for the proper operation of the circuit in the low voltage range.

Fig 1: DTC P0523 Engine Oil Pressure Sensor Changes Resistance - Diagnostic Table (Steps 1 - 4)
Courtesy of GENERAL MOTORS CORP.

Fig 2: DTC P0523 Engine Oil Pressure Sensor Changes Resistance - Diagnostic Table (Steps 5 - 11)
Courtesy of GENERAL MOTORS CORP.