Question about 2005 Pontiac Montana SV6
I take it you mean the A/C pressure line. The low side should be between 30PSI to 50PSI and the high side should be between $150PSI to 200PSI. Any other readings will have poor A/C performance, and to high will result in A/C compressor damage. Good luck and hope this helps. Keep me posted be glad to help and if the low side is less then 10 PSI then the system will need to be vacuumed out due to possible moisture contamination.
Posted on Jun 23, 2009
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Posted on Jan 02, 2017
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