: service ac system code 2005 CTS-V



LanceCTS-V
06-28-08, 02:22 PM
how do I clear the service ac system code on NAV screen, system was working fine till was turned off by ac off button Please help. Lance

05_CTSV
06-30-08, 01:16 PM
Lance-V,

Had the same code come up on mine last week, dealer ended up replacing PCM due to back A/C connector. I guess you could try disconnecting battery for a few min and then reconnect to clear all codes out. If it comes back on perhaps something is genuinely wrong with the system, just my $.02.

gfourth
06-30-08, 02:52 PM
If it comes back on perhaps something is genuinely wrong with the system, just my $.02.

:yeah:

Mine did the same a few weeks ago. Took it to the dealer and they evacuated and refilled it. I picked the car up and made it 10 minutes before it quit again. It ended up being a short in one of the harnesses for the low or high pressure switches.