Upstream Oxygen Sensor Circuit Diagram (2003-2007 Chevrolet Express, GMC Savana)

  • By: Abraham Torres-Arredondo
  • Created: 22 February 2024
  • Updated: 22 February 2024
  • Articl Id: 1143
Front Oxygen Sensor Circuit Wiring Diagram. 2003, 2004, 2005, 2006, 2007 4.8L, 5.3L, 6.0L Chevrolet Express And GMC Savana.

APPLIES TO: This simplified upstream oxygen sensor (Bank 1 and Bank 2) circuit wiring diagram applies to the following vehicles:

Chevrolet:

  • Express (1500) 4.8L, 5.3L: 2003, 2004, 2005, 2006, 2007
  • Express (2500) 4.8L, 5.3L, 6.0L: 2003, 2004, 2005, 2006, 2007
  • Express (3500) 4.8L, 6.0L: 2003, 2004, 2005, 2006, 2007

GMC:

  • Savana (1500) 4.8L, 5.3L: 2003, 2004, 2005, 2006, 2007
  • Savana (2500) 4.8L, 5.3L, 6.0L: 2003, 2004, 2005, 2006, 2007
  • Savana (3500) 4.8L, 6.0L: 2003, 2004, 2005, 2006, 2007

NOTE: You can find the downstream O2 sensor wiring diagram here:

The following article may come in handy:

RELATED WIRING DIAGRAMS. You can find a complete list of Express/Savana wiring diagrams in this index:

More Chevy Express/GMC Savana Articles And Tutorials

You can find a complete list of articles and diagnostic tutorials for the V8 Chevy Express and GMC Savana here:

Here's a sample of the tutorials you'll find in the index:

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  2. Applies To:

Chevrolet Vehicles:

  • Express Van 4.8L, 5.3L, 6.0L
    • 2003, 2004, 2005, 2006, 2007

GMC Vehicles:

  • Savana Van 4.8L, 5.3L, 6.0L
    • 2003, 2004, 2005, 2006, 2007