Ruizure Engine Oil Pressure Sensor PS303 for Chevy GMC (99–02) — Direct-Fit Replacement, Restores Gauge & Warning Light

Ruizure PS303 is a direct-fit engine oil pressure sensor/sender switch designed to restore accurate oil pressure readings and warning operation on compatible Chevy and GMC trucks and SUVs.

If your instrument cluster shows an incorrect oil pressure gauge, a persistent oil pressure warning light, or you suspect the sender is failing, this replacement sensor is made to match original equipment fit and function for many late‑1990s and early‑2000s GM vehicles. It connects to the vehicle’s oil pressure system and communicates pressure information to the dash gauge or warning lamp so you can monitor engine lubrication status reliably.

Which vehicles does this Ruizure sender replace?

This PS303 unit fits a range of Chevrolet, GMC, Pontiac and Cadillac models produced around 1999–2002 (and select GMC Forward 2004–2008). Always verify your vehicle’s specific oil pressure system type—whether it uses a warning light or a pressure gauge—before ordering to ensure proper compatibility.

• Chevrolet: Silverado (1500/2500/1500HD/2500HD), Silverado 3500, Tahoe, Avalanche 1500, Suburban (1500/2500), Camaro
• GMC: Sierra (1500/2500/1500HD/2500HD), Sierra 3500, Yukon/Yukon XL (1500/2500), select Forward models
• Other: Cadillac Escalade (2002), Pontiac Firebird (1999–2002)

How will installing this sensor affect vehicle performance?

A functioning oil pressure sender provides the engine control and dash instruments with accurate pressure data so the driver can respond to lubrication issues. Replacing a faulty sender eliminates false warnings and helps prevent undetected low-oil conditions that can lead to accelerated wear.

• Restores correct gauge readings or warning lamp behavior
• Reduces false or intermittent oil pressure alerts
• Helps drivers spot real low-pressure events earlier

What are the part cross-references and fitment tips?

The Ruizure PS303 is manufactured to match several common part numbers and aftermarket references, making it a suitable replacement for units listed under equivalent codes. Fitment requires checking whether your vehicle uses a pressure gauge or a warning light sensor—those systems use different senders despite similar threads and connectors.

• Interchangeable numbers include PS303, PS-303, PS391, PS-391, 12562267, D1818A, 19244505, 1S6744, OP6671
• Confirm thread, connector type and system (gauge vs. warning light) before purchase
• Compare old sensor visually to ensure identical mounting and electrical plug

What should I expect from construction and warranty?

Ruizure builds this sender using durable materials intended to withstand engine bay exposure and oil contact for dependable service life. The product comes with a manufacturer warranty to provide added confidence after installation.

• Durable housing and internal components for heat and fluid resistance
• Designed for OE-style fitment and straightforward installation
• Includes a 2-year Ruizure limited warranty for manufacturing defects

Who is this for: This Ruizure PS303 oil pressure sender is aimed at owners and independent mechanics working on late‑1990s to early‑2000s GM light trucks and SUVs that show oil pressure gauge errors or a malfunctioning oil pressure warning circuit. If you need a direct-fit replacement with known cross-reference numbers and a backed warranty, this unit is a practical option—just double-check your vehicle’s oil pressure system type and connector before ordering.