When turning the key no longer brings your GM classic to life cleanly, the Standard Ignition switch US-131 is designed to replace the worn ignition starter switch. It is a direct-fit replacement for the listed applications and fits many vehicles, among them the 1984-1985 Chevrolet S10 and 1984-1986 Chevrolet Celebrity.
- OE ignition heritage: Standard Ignition is a global manufacturer of original equipment ignition products. It keeps quality control in-house from the individual components through to the finished switch.
- Copper alloy conductors: Deliver high electrical conductivity with low resistive losses.
- 100% tested: Each switch is tested to verify both its mechanical and its electrical switching performance.
- Built for proper fit and function: A robust design and high-grade materials are intended to meet the demands of today's service professional.
The ignition starter switch is the electrical switch that routes power to the ignition and starter circuits as the key moves through its positions. Signs this part may need replacing include:
- No crank when the key is turned.
- Stalling or intermittent loss of power.
- Accessories that don't power up in the expected key position.
These symptoms can also come from other faults, so diagnose the cause before replacing the switch. If a failed ignition switch is the cause, US-131 replaces it.
Fitment covers many GM vehicles, including Buick, Cadillac, Chevrolet, GMC, Oldsmobile and Pontiac models. See the "Vehicles it fits" section for the full list and engine details.
Interchange: CS142 · IS85 · LS512 · KS6649 · 07843451 · 1990114 · 7843451 · KS6649SB
Product information is for general reference and may contain errors. See our Disclaimer.
This part cross-references / interchanges with the following part numbers:
CS142, IS85, LS512, KS6649, 07843451, 1990114, 7843451, KS6649SB
Frequently Asked Questions
What does the Standard Ignition US-131 do?
It is an ignition starter switch that routes power to the ignition and starter circuits as the key is turned. Its copper alloy conductors are designed for high conductivity with low resistive losses.
Will this S10 switch fit my 1984-1985 Chevrolet S10?
Yes. US-131 is listed for the 1984-1985 Chevrolet S10. Check the "Vehicles it fits" section for your exact year and engine.
Does it work as a Celebrity switch replacement for a 1984-1986 Chevrolet Celebrity?
Yes. It is listed for the 1984-1986 Chevrolet Celebrity. See the "Vehicles it fits" section for engine details for your car.
What are signs an ignition switch may need replacing?
Common signs include no crank when the key is turned, stalling or intermittent power loss, and accessories that don't power up in the expected key position. Other faults can cause these, so diagnose first.
Is the switch tested before it ships?
Yes. Standard Ignition 100% tests its switches to verify both mechanical and electrical switching performance.
