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Home >> GMC >> 1997 >> Forward Control 4.3 W, L35, Automatic >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 10 (Engine Controls - Tests W/Codes - 6.5L Diesel (P Series)) >> Diagnostic Trouble Codes >> DTC P1654 - Service Throttle Soon Light Control Circuit >> Diagnostic Aids

Diagnostic Aids

WARNING: This page is about a different variant/trim than selected.

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

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