Operation CHARM: Car repair manuals for everyone.
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)

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Heater Control Assembly

Heater Control Mounting (Oldsmobile/Buick):




Heater Control Mounting (Pontiac):






Remove or Disconnect

1. Negative battery cable.
2. Steering column fillers.
3. Steering wheel.
4. Turn signal and wiper switches.
5. I/P trim plate.
6. Heater and A/C control - pull heater and A/C control away from the instrument panel.
7. Electrical and vacuum connections.
8. Temperature control cable from heater control.

Install or Connect

1. Temperature control cable to heater control.
2. Electrical and vacuum connections.
3. Heater and A/C control to instrument panel.
4. I/P trim plate.
5. Turn signal and wiper switches.
6. Steering wheel.
7. Steering column fillers.
8. Negative battery cable.