Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

Heating and Air Conditioning: Application and ID

Identify the HVAC control faceplate within the diagrams to see if your vehicle is equiped with Manual (C60), Electronic (C67) or Automatic (C68) Air Conditioning. You can also identify the option by looking at the rpo code (C60, C67, C68) on the "Vehicle Option Label".

Manual A/C (C60):

Manual (C60) - Chevy Only

Electronic A/C (C67):

Electronic (C67) - Buick Only

Auto A/C (C68):

Automatic (C68) - Buick Only