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June 2, 2023 Service bulletin

According to General Motors Recall 23V247: "These vehicles are equipped with an unused circuit that a...

Eldorado technical service bulletin 511640B for 2008, 2014, 2017 Eldorado Aerotech, 2018 Champion Challenger and 2008, 2014, 2017 Eldorado Advantage and others.

Bulletin number
511640B
Component
Electrical system
Summary
According to General Motors Recall 23V247: "These vehicles are equipped with an unused circuit that a final-stage manufacturer may elect to use to install an optional rear HVAC system. If the final-stage manufacturer leaves the circuit's connectors or cut wires unsealed, exposure to moisture or contamination may, over time, cause corrosion. This could result in high current draw through the circuit at the vehicles' lower left side B-pillar. Unintended release of excessive heat from the circuit may pose a risk of a vehicle fire and increase the risk of injury."

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