CarFactBook owner reference
Cadillac CT5 CT5-V V-Series RWD 6DE79 1SF LGY MHS MY2025 US
2025 · Source-backed quick reference for this exact model/chassis code.
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MakeCadillac
ModelCT5
CodeCT5-V V-Series RWD 6DE79 1SF LGY MHS MY2025 US
Documented years2025
Battery & electrical
12V battery12-volt Absorbed Glass Mat (AGM) battery; refer to the original battery label replacement number
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Smart-key batteryCR2450 lithium or equivalent battery; insert positive side toward the back cover
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Fluids & capacities
Coolant capacity12.1 L (12.8 US qt), approximately, for the entire engine cooling system (3.0L V6, rear-wheel drive)
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Engine oil capacity6.0 US qt (5.7 L) with filter (GM TechLink MY2025 chart)
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Transmission fluidDEXRON ULV automatic transmission fluid
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Engine
Engine codeLGY, GM engine RPO (GM TechLink MY2025 chart)
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Engine displacement3.0 L (GM TechLink MY2025 chart)
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Fuel
Fuel tank capacity66.0 L (17.5 US gal), approximately
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Drivetrain & transmission
Powertrain designationLGY 3.0L twin-turbocharged V6; MHS ten-speed automatic; RWD (RWL)
General Motors LLCEvidence →