O2 Oxygen Sensor Replacement 4pc Set for GM/Suzuki/Saab/Isuzu Vehicles (1996-2011)

Replace all four oxygen sensors on your GM vehicle with this complete set—engineered to eliminate persistent check engine lights, restore lost fuel economy, and fix the P0420/P0430 codes common on 1990s-2000s models.

Fix the Check Engine Light That Won't Go Away

If you're fighting a persistent check engine light on your 1996-2011 GM vehicle—Chevy, GMC, Cadillac, Buick, Pontiac, or Oldsmobile—there's a strong chance oxygen sensors are the culprit. Research confirms faulty O2 sensors trigger codes like P0420 (catalyst efficiency below threshold) that account for roughly 13% of all check engine light issues. Symptoms include noticeably decreased fuel mileage, rough idle, hesitation during acceleration, rotten egg smell from the exhaust, and failed emissions tests. Many owners report needing sensor replacement around 100,000 miles, with the downstream sensors (after the catalytic converter) being particularly prone to failure.

This complete 4-sensor pack addresses the problem comprehensively. The direct plug-in design with factory-style 4-wire configuration means no splicing or adapters—just disconnect the old sensors, thread in the new ones, and reconnect the wiring. The 450mm lead length ensures proper fitment across dozens of GM applications from compact cars to full-size trucks and SUVs. Each sensor is built and tested to strict quality control standards, restoring your engine's air-fuel ratio monitoring to bring back smooth idle, proper fuel economy, and eliminate those frustrating P0420/P0430 codes. The 4-pack gives you coverage for complete replacement—most GM V6 and V8 models from this era have four sensors (upstream and downstream, bank 1 and bank 2).

Key Features

• Complete 4-Pack Coverage: Replace all oxygen sensor positions (Bank 1/2, Sensor 1/2) in one purchase—no need to buy sensors individually
• Direct Plug-In Replacement: Factory-style 4-wire heated configuration with pre-attached connectors—no splicing or adapters required
• Proper 450mm Lead Length: Ensures correct fitment across wide range of GM applications from 1996-2011
• OE Interchange Compatibility: Replaces part number 234-4087 and works across multiple GM platforms
• Quality Control Tested: Each sensor built and tested to strict standards for reliable performance and longevity

Fitment (Extensive Compatibility—Verify Your Specific Model)

Cadillac: Escalade 6.2L 2007 • DeVille 4.6L 1996-1999 • El Dorado 4.6L 1996-1999 • Seville 4.6L 1996/1999 • CTS 2.8/3.6/6.0L 2005-2007 • STS 4.4/4.6L 2005-2007 • SRX 4.6L 2005-2006

Chevrolet: Camaro 3.8/5.7L 1996-2002 • Silverado 1500 4.8/5.3/6.0L 2007-2011 • Colorado 2.9/3.7/5.3L 2004-2005/2009-2011 • Equinox 3.4L 2009 • Express 1500/2500/3500 4.3/4.8/5.3/6.0L 2003-2007 • Impala 3.5/3.9/5.3L 2000-2004/2007-2009 • Avalanche 5.3/6.0L 2007 • Lumina 3.1L 1996-2001 • Malibu 2.2/3.5L 2004-2007 • Monte Carlo 3.5/5.3L 1996-2004/2006-2007 • Tahoe 5.3L 2006-2007 • Suburban 5.3/6.0L 2006 • Trailblazer 4.2/5.3/6.0L 2002-2007 • S-10 2.2/4.3L 1997-2003 • Venture 3.4L 1997-2004

GMC: Canyon 2.9/3.7/5.3L 2004-2005/2009-2011 • Sierra 4.8/5.3/6.2L 2007-2011 • Yukon 4.8/5.3/6.2L 2006-2007 • Yukon XL 5.3/6.0/6.2L 2006-2007 • Envoy 4.2/5.3L 2003-2006 • Savana 4.3/5.3L 2003-2006 • Sonoma 2.2/4.3L 1997-2003

HUMMER: H2 6.2L 2007-2008 • H3 3.7/5.3L 2008-2010

Buick: LaCrosse 3.8/5.3L 2008-2009 • Rainier 5.3L 2004-2006 • Century 3.1L 1996-2004 • LeSabre 3.8L 1996-2003 • Rendezvous 3.4L 2002-2003 • Park Avenue 3.8L 1996-2003 • Regal 3.8L 1997-2003 • Riviera 3.8L 1998-1999

Oldsmobile: Aurora 4.0L 1996-1999 • Cutlass Supreme 3.1L 1996-1997 • Intrigue 3.5/3.8L 1998-1999 • 88 3.8L 1996-1999 • 98 3.8L 1996 • Silhouette 3.4L 1996-2004 • Regency 1997-1998 • Bravada 4.2L 2002-2003

Pontiac: Bonneville 3.8L 1996-2001 • Grand Prix 3.8/5.3L 1996-2003/2007-2008 • G6 2.4/3.5/3.9L 2006-2007 • Torrent 3.4L 2008 • Aztec 3.7L 2001-2004 • Montana 3.7L 2002-2004 • Firebird 3.8/5.7L 1996-2002 • Transport 3.4L 1996-1998

Saturn: Vue 3.5L 2008

Suzuki: XL7 3.2/3.6L 2007

Saab: 9-7x 4.2/5.3L 2005-2006

Isuzu: Ascender 4.2/5.3L 2003-2005 • Hombre 4.3L 1997-2000

Package Includes: 4x heated oxygen sensors (4-wire configuration), factory-style electrical connectors pre-attached, 450mm lead length for proper fitment, OE interchange part number 234-4087 compatibility.