Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
1998 Cadillac Seville SLSFACTORY OEM SERVICE PROCEDURE
Body Control Module
- Description
- Component Locations
- BCM Programming/RPO Configuration
- Memory & Personalization Programming
- Self-Diagnostic System
- Diagnosis & Testing
- Notes
- BCM Diagnostic System Check
- DTC B0530: Fuel Level Sensor Stuck
- DTC B0532: Fuel Level Sensor Shorted To Ground Or Open
- DTC B0533: Fuel Sensor Feedback Shorted High
- DTC B1007: EEPROM Write Error
- DTC B1009: EEPROM Checksum Error
- DTC B1310: Outside (Ambient) Air Temperature Sensor Failure
- DTC B1317: In-Car Air Temperature Sensor
- DTC B1318: Driver-Side Solar Sensor
- DTC B1321: A/C Low Side Temperature Sensor
- DTC B1324: A/C Refrigerant OVERPRESSURE
- DTC B1327: Source/Battery Voltage Low
- DTC B1328: Source/Battery Voltage High
- DTC B1329: Passenger-Side Solar Sensor
- DTC B1330: Left A/C Temperature Sensor
- DTC B1331: Right A/C Temperature Sensor
- DTC B1332: Left Heater Temperature Sensor
- DTC B1333: Right Heater Temperature Sensor
- DTC B1340: Driver-Side Air Mix Actuator Feedback
- DTC B1341: Passenger-Side Air Mix Actuator Feedback
- DTC B1343: Air Inlet Door Movement Fault
- DTC B1344: HTR/Def/Ac Door Movement Fault
- DTC B1390: Battery Voltage Sensor Failure
- DTC B1652: Loss Of Keep Alive Memory (KAM)
- DTC B1656: EEPROM Write Error
- DTC B1658: EEPROM Checksum Error
- DTC B1805: Ignition Switch Problem
- DTC B1982: Source/Battery Voltage High
- DTC B1983: Source/Battery Voltage Low
- DTC B2419: Twilight Photocell Circuit Problem
- DTC B2420: Twilight Delay Pot Failure
- DTC B2422: Interior Light Rheostat Failure
- DTC B2510: Steering Wheel HVAC Control Switches Stuck
- DTC B2511: Steering Wheel Convenience Control Switches Stuck
- DTC B2512: Steering Wheel Controls Illegal A/D Values
- DTC U1016: Loss Of Communications With Pcm
- DTC U1040: Loss Of Communications With Abs
- DTC U1056: Loss Of Communications With RSS
- DTC U1064: Loss Of Communications With Dim
- DTC U1065: Loss Of Communications With IPM
- DTC U1066: Loss Of Communications With Rim
- DTC U1088: Loss Of Communications With SDM
- DTC U1096: Loss Of Communications With IPC
- DTC U1128: Loss Of Communications With IRC
- DTC U1129: Loss Of Communications With Amp
- DTC U1160: Loss Of Communications With DDM
- DTC U1176: Loss Of Communications With RFA
- DTC U1192: Loss Of Communications With VTD
- DTC U1255: Class-II Initialization Error
- DTC U1300: Class-II Bus Shorted To Ground
- DTC U1301: Class-II Bus Shorted To Voltage
- Removal & Installation
- Wiring Diagrams
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
Rather have a pro handle this?
A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.
Comes to youSame-day available12-month warranty
Get a Free QuoteNo obligation. See pricing before you book.