Service Intervals
WARNING: This page does not describe the selected car, but rather 28 other vehicles, including the 1987 GMC Vandura Special, 1987 GMC Vandura, 1987 GMC Value Van, 1987 GMC Suburban, and 1987 GMC Safari. However, it is still accessible from the selected car via links, so may be relevant.
Check transmission fluid level at each engine oil change. Change transmission fluid and filter at 100,000 mile intervals on vehicles in normal use. If vehicle is used in severe service conditions (commercial use, trailer pulling, constant stop and go city traffic), change fluid and filter every 15,000 miles.