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DRL relay buzzing
Car came in after another shop failed to fix DRL. They did not work at all. Found a bad diode that supplies power to the DRL relay. Replaced the diode and now the system works but the relay makes a buzzing sound like an old seatbelt warning from the 70's. The ... Login to read more. 
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26 Replies Received
26 Replies Received
| Engine | 5.7 L |
| Trans | 4-speed Automatic (Electronic) |
Vehicle Data
1999 Cadillac Escalade 5.7L
| Engine | 5.7 L |
| Trans | 4-speed Automatic (Electronic) |
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