HomeIgnition > SwitchesStandard Ignition US-343 Ignition Switch
Part #: US-343

Standard Ignition US-343 Ignition Switch

⚙️ 25 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Chevrolet, GMC, Oldsmobile, and Isuzu, Blazer, Jimmy, S10, Sonoma, Bravada, and Hombre
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Reliable Ignition Switch for Chevrolet, GMC, Isuzu, and Oldsmobile

The Standard Ignition US-343 ignition switch is designed to provide dependable performance for select Chevrolet, GMC, Isuzu, and Oldsmobile vehicles. Engineered for column mounting, this gray plastic ignition switch offers a secure snap fit attachment and a durable blade terminal design.

Key Features of Standard Ignition US-343 Ignition Switch

  • Attachment Method: Snap fit for easy installation
  • Color: Gray plastic finish for corrosion resistance
  • Connector: One male rectangular connector
  • Terminals: 13 female blade terminals for reliable electrical connections
  • Mounting Location: Designed specifically for column installation

Detailed Product Description

The Standard Ignition US-343 ignition switch is crafted to meet the electrical demands of vehicles such as the Chevrolet Blazer, GMC Jimmy, Isuzu Hombre, and Oldsmobile S10 and Sonoma models. Its snap fit attachment method ensures a secure and straightforward installation on the steering column. The gray plastic finish provides durability and resistance to wear, while the single male rectangular connector and 13 female blade terminals facilitate consistent and stable electrical contact. This ignition switch is engineered to maintain proper ignition circuit function, supporting vehicle start-up and accessory power delivery.

Common Applications and Issues Addressed

  • Replacement for faulty or worn ignition switches in Chevrolet Blazer and GMC Jimmy
  • Resolves intermittent starting problems in Isuzu Hombre and Oldsmobile S10
  • Fixes electrical connection failures related to ignition switch terminals
  • Addresses ignition key sticking or failure to turn in column-mounted switches
  • Restores proper accessory power operation in compatible vehicles

Installation Notes and Tips

  • Ensure the ignition switch is compatible with your vehicle make and model before installation
  • Disconnect the battery to prevent electrical shorts during replacement
  • Use the snap fit attachment method to secure the switch firmly to the steering column
  • Verify all 13 blade terminals are properly connected to avoid electrical issues
  • Test ignition switch function before reassembling the steering column components

Quality Assurance and Warranty Information

Standard Ignition parts are manufactured to meet or exceed OEM specifications, ensuring reliable performance and fitment. The US-343 ignition switch undergoes rigorous quality control to maintain consistent electrical and mechanical standards. Warranty coverage details should be confirmed with the parts provider or manufacturer documentation.

BrandStandard Ignition
Part NumberUS-343
Attachment MethodSnap Fit
ColorGray
Connector GenderMale
Connector ShapeRectangular
FinishPlastic
Mounting LocationColumn
Terminal GenderFemale
Terminal TypeBlade

This part fits 25 vehicles. Search below:

YearMakeModelPositionNotes
2005ChevroletBlazerN/AExc. Right Hand Drive
2005GMCJimmyN/ALeft Hand Drive
2004ChevroletBlazerN/AExc. Right Hand Drive
2004ChevroletS10N/A
2004GMCJimmyN/ALeft Hand Drive
2004GMCSonomaN/ALeft Hand Drive
2003ChevroletBlazerN/AExc. Right Hand Drive
2003ChevroletS10N/A
2003GMCJimmyN/ALeft Hand Drive
2003GMCSonomaN/ALeft Hand Drive
2002ChevroletBlazerN/AExc. Right Hand Drive
2002ChevroletS10N/ALeft Hand Drive
2002GMCJimmyN/ALeft Hand Drive
2002GMCSonomaN/ALeft Hand Drive
2001ChevroletBlazerN/AExc. Right Hand Drive
2001ChevroletS10N/ALeft Hand Drive
2001GMCJimmyN/ALeft Hand Drive
2001GMCSonomaN/ALeft Hand Drive
2001OldsmobileBravadaN/A
2000ChevroletBlazerN/AExc. Right Hand Drive
2000ChevroletS10N/ALeft Hand Drive
2000GMCJimmyN/ALeft Hand Drive
2000GMCSonomaN/ALeft Hand Drive
2000IsuzuHombreN/A
2000OldsmobileBravadaN/A

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

1S59732607011153-27365CS658IS150KS6255KS6255SBLS1076UL14-66

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.