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Home >> Chevrolet >> 2000 >> C3500 HD 6.5 F, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Self-Diagnostics - Diesel >> Diagnostic Tests >> DTC P1654: Service Throttle Soon Light Control Circuit >> Diagnostic Aids

Diagnostic Aids

A faulty bulb or short to ground in SERVICE THROTTLE SOON light control circuit will cause DTC P1654 to set.

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