Operation CHARM: Car repair manuals for everyone.
Home >> Cadillac >> 1994 >> Seville STS V8-4.6L VIN 9 >> Repair and Diagnosis >> Heating and Air Conditioning >> Heater Control Valve >> Locations
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

Heater Control Valve: Locations

This vehicle does not use a Heater Control Valve (Coolant Valve) as coolant is always circulated through the heater core. Rate of coolant flow through the heater core is established by the Coolant Flow Restrictor.

Temperature is controlled with the Air Mix Door which allows or restricts the flow of air through the heater core case.
pro multis · About Operation CHARM