gmc Workshop Repair Guides

GMC Workshop Service and Repair Manuals

Compression Check|Specifications|Page 3828 > < Access Cover, Engine|Service and Repair
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Compression Check: Specifications

The minimum compression in any one cylinder is 2069 kPa (300 psi). There should not be more than 345 kPa (50 psi) difference between a suspect
cylinder and the average compression of all 8 cylinders.

Compression Check|Specifications|Page 3828 > < Access Cover, Engine|Service and Repair