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Express 2500 LS, 2.8L Eng VIN 1
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Repair and Diagnosis
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Engine Performance
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System
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Data Communication System
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Diagnostic Information and Procedures
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DTC U1865: Fuel Operated Heater Lost Communication with Engine Control Module
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Circuit/System Verification
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Circuit/System Verification
Verify that U0100 is not set.
If the DTC is set, refer to
DTC U0100-U02FF
.