gmc Workshop Repair Guides

GMC Workshop Service and Repair Manuals

Compression Check|Specifications|Page 2671 > < Access Cover, Engine|Service and Repair
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Compression Check: Specifications

The minimum compression in any one cylinder should not be less than 70 percent of the highest cylinder. No cylinder should read less than 690 kPa (100
psi)

Compression Check|Specifications|Page 2671 > < Access Cover, Engine|Service and Repair