6th Gen (Holden Monaro)
Pontiac GTO (2004–2006)
Maintenance Schedule
8 recurring services keep the 2004–2006 Pontiac GTO healthy — starting with oil changes every 5,000 miles. Budget roughly $2,300–4,400 in routine maintenance over 100,000 miles at typical U.S. shop prices.
Applies to model years 2004, 2005, 2006
Full schedule
Intervals follow the factory maintenance schedule for the 2004-2006 Pontiac GTO. Cost ranges are typical U.S. shop prices.
| Service | Interval | Est. cost | Notes |
|---|---|---|---|
| Oil Change | Every 5,000 mi or 6 mo | $60–110 | Engine oil and filter replacement |
| Cabin Air Filter | Every 15,000 mi or 12 mo | $30–60 | Replace cabin air filter |
| Air Filter | Every 30,000 mi or 12 mo | $40–80 | Replace engine air filter |
| Transmission Fluid | Every 50,000 mi | $150–300 | Replace automatic transmission fluid |
| Differential Service | Every 50,000 mi | $120–240 | Replace rear differential fluid |
| Coolant Flush | Every 100,000 mi or 5 yr | $150–300 | Replace engine coolant |
| Spark Plugs | Every 100,000 mi | $120–240 | Replace spark plugs |
| Brake Fluid | Every 2 yr | $80–160 | Replace brake fluid every 2 years |
Common questions
How often should I change the oil on a 2004–2006 Pontiac GTO?
Every 5,000 miles or 6 months, whichever comes first. A typical U.S. shop charges $60–110. Engine oil and filter replacement.
How much does it cost to maintain a Pontiac GTO (2004–2006)?
Routine maintenance on the 2004–2006 Pontiac GTO runs roughly $2,300–4,400 over 100,000 miles at typical U.S. shop prices, spread across 8 recurring services. Independent shops usually land near the low end; dealers near the high end.
What is the most expensive scheduled service on this GTO?
Transmission Fluid at $150–300, due every 50,000 miles. Replace automatic transmission fluid.
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.