A-Premium 4-Pack O2 Oxygen Sensor Kit for GM Trucks & SUVs (2008–2014) — Upstream & Downstream, OE-Style Fit

A-Premium’s 4-pack oxygen sensor set replaces both upstream and downstream O2 sensors to restore accurate air-fuel readings for compatible GM trucks and SUVs.

This complete sensor kit is engineered for late‑2000s to early‑2010s GM V8 and select V6 models, offering direct-fit compatibility for many Sierra, Silverado, Yukon, Tahoe, Escalade, Suburban, Avalanche and more. The four-sensor bundle includes both pre-catalyst (upstream) and post-catalyst (downstream) sensors so you can service an entire bank at once and reduce diagnostic time. Each sensor is manufactured and tested to meet OE-style specifications and ships with a one-year unlimited-mileage quality guarantee for added peace of mind.

Which vehicles will these A-Premium O2 sensors fit?

These sensors cover a broad range of GM vehicles from approximately 2008–2014, including full-size trucks, SUVs and a handful of sedans. Fitment varies by engine displacement and model year—always cross-check part references or your VIN before ordering to ensure compatibility.

• GMC Sierra 1500 (2008–2013) and HD models (2008–2010) with V8 engines
• Chevrolet Silverado, Tahoe, Suburban, Avalanche and select Malibu models (2008–2014)
• Cadillac Escalade and Escalade ESV/EXT (2008–2014) for 6.0L and 6.2L V8s
• Additional fitments: Pontiac G6, Saturn Aura/Vue for select 3.5L–3.9L V6s

How do I know which sensor goes where and what the kit includes?

The kit supplies both upstream (pre-catalyst) and downstream (post-catalyst) oxygen sensors for an entire vehicle bank, eliminating the need to buy sensors individually. Upstream sensors are located before the catalytic converter to monitor combustion, while downstream sensors sit after the converter to check its efficiency.

• Four sensors total — covers both banks (upstream and downstream)
• OE-style connectors and wiring lengths designed for direct installation
• Reference numbers included to verify exact replacement part crossovers

What are the benefits of replacing all four O2 sensors at once?

Replacing the full set ensures consistent sensor response across both banks and prevents diagnostic confusion caused by mixing old and new parts. Swapping all sensors at once can stabilize emissions readings and provide a reliable baseline for engine tuning or further diagnostics.

• Uniform sensor performance and quicker fault isolation
• Reduced trips to the parts store and lower per-sensor cost
• Helps ensure accurate long-term exhaust monitoring and emissions checks

Are these A-Premium sensors easy to install and what warranty is included?

Installation is straightforward for anyone familiar with basic automotive repair: unclip the harness, unbolt the old sensor, remove it with an oxygen sensor socket and fit the new one. A-Premium backs this 4-pack with a one-year unlimited-mileage quality guarantee—contact their support if you encounter fitment or performance issues.

• Direct-fit design reduces the need for splicing or modification
• Standard installation steps—no special calibration required in most cases
• 1-year unlimited-mileage guarantee for added buyer protection

Who is this for: This A-Premium 4-pack is designed for DIY mechanics, independent garages and fleet owners who service mid‑2000s to early‑2010s GM trucks and SUVs. If you need to replace both upstream and downstream oxygen sensors to resolve diagnostic trouble codes, restore more consistent sensor readings, or prepare a vehicle for emissions testing, this complete kit provides a cost-effective and convenient option with broad model coverage.