A normal reading should be approximately 1482 kPa (215 psi). The lowest reading
should not be less than 70 percent of the highest reading.
I was getting 170 to 180 PSI on all of them I have 189k on it what does this mean???A Google search yielded this site:
Chevrolet Workshop Service and Repair Manuals > TrailBlazer 4WD L6-4.2L VIN S (2002) > Engine, Cooling and Exhaust | Engine | Compression Check | System Information | System Diagnosis | Cylinder Leakage Test | Page 2858
TrailBlazer 4WD L6-4.2L VIN S (2002) > Chevrolet Workshop Service and Repair Manuals > Engine, Cooling and Exhaust | Engine | Compression Check | System Information | System Diagnosis | Cylinder Leakage Test | Page 2858workshop-manuals.com