2025 Trailblazer Oil Change. I could've easily gone 9,000 miles on synthetic oil according to the analysis! The first recommended oil change is at 7500 miles, but after only 3600 miles the oil was very dark which i figured it would be for break in oil, so don't wait 7500 miles, lol.

So after you’ve done the oil change and filter, it’s very important that you reset your oil maintenance reminder light on this chevy trailblazer. Changing your oil and replacing the oil filter regularly can help ensure that your engine is protected against damage and runs at its best.