1991 Cadillac Seville Repair Question
Topics covered: Heater, Heater core, Electrical connector.
Mileage: No information provided.
Mileage: No information provided.
Asked on December 24, 2010
Heater core
How do i replace a heater core in a 1991 Cadillac Seville
Asked by spear828Answer
Replied on December 28, 2010
HEATER CORE
Removal & Installation
1. Disconnect negative battery cable. Partially drain coolant. Remove glove box and lower sound insulator panel from under right side of dash.
2. Remove programmer and disconnect electrical connectors from BCM. Remove BCM and BCM mounting bracket. Disconnect electrical connectors from PCM. Remove PCM and mounting bracket.
3. Remove heater core cover. Remove heater hoses from heater core. Remove heater core by removing two screws. Installation is reverse of removal. After installation, adjust Air Mix Valve.
