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The 1999 Pontiac Grand Am does not have a specific fuse or breaker dedicated solely to the idle air control valve (IAC). Instead, the IAC is powered through the engine control module (ECM), which regulates its operation. If you experience issues with the IAC, it's best to check the wiring and connectors for damage or corrosion, as well as ensuring the ECM is functioning properly. Additionally, you can check related fuses that power the ECM and other engine components.

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2mo ago

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