Description
Replace a damaged or leaking sensor with this Genuine General Motors Water In Fuel (WIF) Sensor, part number 19541494, designed for 2012–2016 GM 6.6L LML Duramax diesel engines.
Over time, the factory WIF sensor commonly becomes brittle, cracked, corroded, or damaged from improper removal during fuel filter service. It’s very common to find broken wires or poor electrical connection, which can prevent the water in fuel warning light from activating — leaving your fuel system vulnerable to contamination.
In some trucks, a leaking WIF sensor can also contribute to power loss and fuel priming issues.
Replacing it with a genuine GM sensor restores proper sealing and correct water detection for reliable fuel system operation.
Features & Benefits:
– Genuine OEM GM fuel system sensor
– Detects water contamination in diesel fuel
– Restores proper warning light operation
– Helps prevent fuel system damage
– Direct replacement for factory WIF sensor
Part Information:
GM Part Number: 19541494
UPC: 198824252009
Replaces GM Part Numbers: 12637776, 12651583, 12676436
Service Instructions:
– Drain frequently in high-humidity environments
– Ensure engine is off and cool before servicing
– Open vent plug and drain valve to remove water
– Close drain immediately once water has emptied
– Water is heavier than fuel and will settle at the bottom of the filter
Vehicle Fitment:
2011–2016 Chevrolet Silverado 2500HD / 3500HD (6.6L LML Duramax Diesel)
2011–2016 GMC Sierra 2500HD / 3500HD (6.6L LML Duramax Diesel)
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