2021 Chevrolet Tahoe
30,000 mile service checklist
Here's exactly what your factory maintenance schedule calls for at this mileage — and what each item typically costs.
30,000 mile service
- Engine oil and filter change — dexos1 0W-20 (gas) or 5W-40 (Duramax)
- Tire rotation
- Replace cabin air filter
- Replace engine air filter
- Inspect spark plugs — 5.3L/6.2L V8 iridium (factory interval ~97,500 miles under GM's extended schedule; inspect at 30k)
- Inspect front differential fluid (4WD — GM 75W-85 synthetic gear oil)
- Inspect transfer case fluid (4WD — GM Autotrac fluid)
- Inspect rear axle fluid — GM 75W-90 synthetic (limited-slip requires friction modifier additive)
- Replace fuel filter — Duramax diesel models (severe-duty interval)