To troubleshoot a cooling fan issue, you should:
1. Check the cooling fan relay: This is more likely the culprit than a fuse. Its location varies slightly depending on the specific Impala trim and engine (3.5L or 3.9L). Consult your owner's manual for the exact location. You can usually swap it with a similar relay to test it.
2. Check the fuses related to the cooling fan circuit: Again, your owner's manual is crucial here. Look for fuses related to the AC, radiator, or cooling system. These fuses might be in the underhood fuse box or the interior fuse panel.
3. Have the system diagnosed: If you can't find a blown fuse or a faulty relay, take your Impala to a qualified mechanic or auto parts store with diagnostic capabilities. They can use a scan tool to check for diagnostic trouble codes (DTCs) related to the cooling fan circuit. This will pinpoint the actual problem much more efficiently than checking fuses randomly.
In short: Don't waste time hunting for a single "fan fuse." Focus on the relay and relevant fuses listed in your owner's manual, and consider professional diagnostics if the problem persists.
