What is the RPM at idle on a 2003 Chevy Trailblazer?
The idle RPM for a 2003 Chevy Trailblazer should be between 650 and 850 RPM. However, slight variations are possible depending on engine temperature, accessories running (like the air conditioning), and the specific engine (4.2L inline-6 or 5.3L V8). If it's significantly outside this range, it might indicate a problem.
