gmc Workshop Repair Guides

GMC Workshop Service and Repair Manuals

Compression Check|Specifications|Page 4883 > < Spark Plug|Specifications|Page 4879
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Compression Check: Specifications

The lowest reading should not be less than 70 percent of the highest reading.
No cylinder reading should be less than  ...................................................................................................................................................  965 kPa (140 psi).

Compression Check|Specifications|Page 4883 > < Spark Plug|Specifications|Page 4879