LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> GMC >> 1994 >> Forward Control 7.4 N >> Repair and Diagnosis >> Engine Performance >> Specifications >> Engine Controls - Specifications - Gasoline >> Quick-Service >> Service Intervals & Specifications
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Service Intervals & Specifications

REPLACEMENT INTERVALS

Component Interval (Miles)
Air Filter 30,000
Coolant 30,000
Fuel Filter 60,000
Oil & Filter (1) 7500
Spark Plugs 30,000
(1) On turbo models, replace every 3000 miles.
scientia non olet · About LEMON Manuals