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Compression Check|Specifications|Page 2491 > < Variable Valve Timing Solenoid|Diagrams|Page 2487

TrailBlazer 2WD L6-4.2L VIN S (2003)

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Compression Check: Specifications

Record the compression readings from all of the cylinders. A normal reading should be approximately 1482 kPa (215 psi). The lowest reading should
not be less than 70 percent of the highest reading.

Compression Check|Specifications|Page 2491 > < Variable Valve Timing Solenoid|Diagrams|Page 2487