GMC Workshop Service and Repair Manuals > C 1500 Truck 2WD V8-350 5.7L (1989) > Powertrain Management | Tune-up and Engine Performance Checks | Idle Speed | System Information | Adjustments | Idle Speed

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Fast Idle Adjustment

Set fast idle to specified rpm with transmission in NEUTRAL or PARK, unless otherwise specified.

GMC Workshop Service and Repair Manuals