G 3500 1 Ton Van V8-379 6.2L DSL VIN J FI (1992)
to amount column travels down to obtain total PSI/Vacuum.
Example:
One-half inch above zero plus one-half inch below zero equals one inch vacuum reading.
1/2" + 1/2" = 1"
to amount column travels down to obtain total PSI/Vacuum.
Example:
One-half inch above zero plus one-half inch below zero equals one inch vacuum reading.
1/2" + 1/2" = 1"