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1985 GMC S15 Jimmy

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Today's GMC S15 Jimmy engines are a little more complicated than those your parents drove. Rather than a simple adjustment to the carburetor, today's repairs require knowledge of car sensors: how they work, where to find them, and how to recognize which one isn't working right. Once you figure this out, choose the right sensor for repairs.


These components track several automotive processes. Depending on which system isn't working in your GMC S15 Jimmy, you may need an air cleaner temperature sensor, an exhaust gas temperature sensor, or a fuel injection timing sensor. When your "Check Engine" light flips on, you or a mechanic can use an OBD code reader to identify the malfunctioning sensor.