GM Service Manual Online
For 1990-2009 cars only

SMU - Revised Engine Oil Pressure Gage Inaccurate or Inoperative Diagnostic Information

Subject:Revised Engine Oil Pressure Gage Inaccurate or Inoperative Diagnostic Information

Models:2003 Cadillac Escalade, Escalade ESV, Escalade EXT
2003 Chevrolet Avalanche, Silverado, Suburban, Tahoe
2003 GMC Sierra, Yukon, Yukon XL, Yukon Denali, Yukon Denali XL



This bulletin is being issued to revise the Engine Oil Pressure Gage Inaccurate or Inoperative diagnostic information in the Instrument Panel and Console sub-section of the Service Manual. Please replace the current information in the Service Manual with the following information.

The following information has been updated within SI. If you are using a paper version of this Service Manual, please make a reference to this bulletin on the affected page.

The specifications listed in the Values column for Step 2 have been revised. The oil pressure range for the 8.1L L18 engine should be 34-483 kPa (5-70 psi). For other engine applications, the pressure remains the same at 207-483 kPa (30-70 psi).