The Walker Products Engine Variable Valve Timing (VVT) Solenoid (part number 590-1000) is a direct-fit replacement for 2002-2012 Buick, Chevrolet, GMC, and Hummer vehicles with 4.2L, 3.5L, and 2.8L engines. Walker Products VVT Solenoids are OE Replacement components that restore precise valve timing control by regulating oil flow to the camshaft phasing system.
Features:
- Exact OE Fit: Installs using factory connectors and mounting points with 100% fit—no modification required.
- OE Replacement Calibration:Â Matches original electrical specs, oil flow rate, and response timing for precise engine control.
- Controls Camshaft Timing:Â Actuates oil flow to VVT sprockets, allowing optimized valve timing for power, fuel economy, and emissions.
- Resolves Timing-Related Issues:Â Helps eliminate check engine lights, poor idle, or drivability problems caused by sticking or failed solenoids.
- Built for Harsh Environments:Â Constructed with oil-resistant seals and heat-tolerant housings to withstand long-term engine operation.
Specifications:
| Number of Terminals | 2 |
| Connector Type | Blade |
| Connector Shape | Oblong |
| Connector Gender | Male |
| Terminal Gender | Female |
Fits: 2002-2012 Buick, Chevrolet, GMC, Hummer, and Isuzu models including Rainier, Colorado, Trailblazer, Trailblazer EXT, Canyon, Envoy, Envoy XL, Envoy XUV and more — 4.2L, 3.5L, and 2.8L engines.
Confirm the year, make, model, and engine against your vehicle before ordering. Full application data is shown in the fitment lookup on this page.
Interchanges With: Carquest 73-12012, Dorman 917-010, Delphi SL10064, General Motors 12568078, General Motors 12576768, General Motors 12597025, General Motors 12602516, General Motors 12615873 and 10 more
WARNING: This product can expose you to chemicals, including lead, which is known to the State of California to cause cancer or birth defects or other reproductive harm.
