1995 Chev Lumina Malfunction - Electrical & Lighting Systems

Question: chevy says radiator fans are ok. no codes. Fans never run. One runs if air conditioner is on. Temp gauge goes up when not moving. Goes down when moving.

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Technican: Hello, There are relays that control the cooling fans and at what speed the fan motors run. I'd recommend you replace them. All of them. Chevy should have known to recommend this. But, before you do...each relay connector has four wires. Two of these wires should have 12 volts present when the key is on. If that is the case, replace the relay and retest for cooling fan operation. Will Chevy show you where these relays are?? Your turn,

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