6th Gen
Cadillac DeVille (1976–1984)
Maintenance Schedule
6 recurring services keep the 1976–1984 Cadillac DeVille healthy — starting with oil changes every 3,000 miles. Budget roughly $2,400–3,800 in routine maintenance over 100,000 miles at typical U.S. shop prices.
Applies to model years 1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984
Full schedule
Intervals follow the factory maintenance schedule for the 1976-1984 Cadillac DeVille. Cost ranges are typical U.S. shop prices.
| Service | Interval | Est. cost | Notes |
|---|---|---|---|
| Oil Change | Every 3,000 mi or 3 mo | $25–40 | Engine oil and filter replacement |
| Tune-up | Every 12,000 mi or 12 mo | $100–160 | Points, plugs, condenser, timing adjustment |
| Air Filter | Every 12,000 mi or 12 mo | $18–30 | Air filter replacement |
| Brake Adjustment | Every 12,000 mi or 12 mo | $40–70 | Brake adjustment and inspection |
| Transmission Service | Every 36,000 mi or 3 yr | $80–120 | Transmission fluid change |
| Coolant Service | Every 36,000 mi or 2 yr | $60–100 | Coolant flush and replacement |
Common questions
How often should I change the oil on a 1976–1984 Cadillac DeVille?
Every 3,000 miles or 3 months, whichever comes first. A typical U.S. shop charges $25–40. Engine oil and filter replacement.
How much does it cost to maintain a Cadillac DeVille (1976–1984)?
Routine maintenance on the 1976–1984 Cadillac DeVille runs roughly $2,400–3,800 over 100,000 miles at typical U.S. shop prices, spread across 6 recurring services. Independent shops usually land near the low end; dealers near the high end.
What is the most expensive scheduled service on this DeVille?
Tune-up at $100–160, due every 12,000 miles. Points, plugs, condenser, timing adjustment.
Cost ranges are estimates for typical U.S. independent shops and dealers; your local prices will vary. Always confirm intervals against your owner's manual — severe driving conditions (towing, short trips, extreme heat or cold) shorten many of them.