Alternators

Amperage, pulley style, and the regulator connector have to match the charging system on the vehicle, not a generic listing for the same year. A six-groove pulley on a four-groove belt is a noise complaint. A 90-amp unit in a truck that came with 130 leaves the battery hungry with lights, blower, and trailer plugs running. We check engine, options, and whether the regulator is internal or computer-controlled. Share the VIN or a photo of the back of the old alternator — plug shape, stud layout, and pulley — and we source a unit that actually charges the battery you have. Rebuild versus new is on the table. We tell you what to inspect on the belt and tensioner while the old one is off so the new one is not fighting a glazed belt on day two.

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