Some owners of a 2008 Malibu or G6 equipped with V6 engines ( LY7 & LZ4) may comment of a moan noise from the front of vehicle when the A/C system is operating.
The noise will typically get louder as the RPM increases (usually loudest around
2000-2400 rpm).
Check that the A/C compressor mounting bolts are properly torqued (50 Nm / 37 lb ft).
If these bolts were loose, also check that the A/C compressor hose nut is tight (20 Nm /
15 lb ft).
- Thanks to Jim Loomis
The noise will typically get louder as the RPM increases (usually loudest around
2000-2400 rpm).
Check that the A/C compressor mounting bolts are properly torqued (50 Nm / 37 lb ft).
If these bolts were loose, also check that the A/C compressor hose nut is tight (20 Nm /
15 lb ft).
- Thanks to Jim Loomis
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