Service Intervals & Specifications

1985 Chevrolet Chevy Van G20, 6.2 C, StandardSECTION Service Intervals & Specifications
WARNING: This page does not describe the selected car, but rather 20 other vehicles, including the 1994 GMC Yukon, 1994 GMC Vandura Special, 1994 GMC Vandura, 1994 GMC Suburban, and 1994 GMC Rally Camper Special. However, it is still accessible from the selected car via links, so may be relevant.
REPLACEMENT INTERVALS

Component Interval (Miles)
Air Filter 30,000
Coolant 30,000
Fuel Filter (1) 60,000
Oil & Filter (2)(3) 7500
Spark Plugs 30,000
(1) On diesel engines, replace every 30,000 miles.
(2) On diesel engines, replace every 5000 miles.
(3) On turbo models, replace every 3000 miles.
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.