TrailBlazer 4WD L6-4.2L (2007)
6. Fill the crankcase with the proper quantity of engine oil. Refer to Approximate Fluid Capacities and Fluid and Lubricant Recommendations.
7. Remove the oil level indicator.
8. Wipe the indicator with a clean cloth.
9. Install the oil level indicator.
10. Remove the oil level indicator and check the oil level.
11. Add oil if necessary.
12. Check for any oil leaks.