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Vehicle

Cadillac CT6

The full-size saloon on GM's Omega platform, and the most structurally unusual Cadillac of its era: a mixed-material body of aluminium and steel joined by laser welding, rivets and adhesive, which puts accident repair outside ordinary panel work. It also carried Super Cruise and a rear-wheel-steering system, both with their own control units and sensor sets. The 4.2 twin-turbo Blackwing V8 is a low-volume engine whose parts and documentation are correspondingly scarce.

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Cadillac CT6, front view
Mr.choppers · CC BY-SA 3.0 (external)

Generations

  • First generation 2016–2020

    A mixed aluminium-and-steel body joined by welds, rivets and adhesive — structural repair is a specialist process.

    Body styles
    Sedan
    Platform
    GM Omega
    Engines
    • 2.0 turbo — LTG · petrol
    • 3.6 V6 — petrol · 250 kW (335 hp) · 385 Nm (284 lb-ft)
    • 3.0 twin-turbo V6 — petrol · 307 kW (412 hp) · 542 Nm (400 lb-ft)
    • 4.2 twin-turbo Blackwing V8 — petrol · 410 kW (550 hp) · 868 Nm (640 lb-ft) · CT6-V
    • 2.0 turbo PHEV — plug-in hybrid
    Transmissions
    10-speed automatic · 8-speed Hydra-Matic 8L45 automatic · 8-speed Hydra-Matic 8L90 automatic · electronic CVT
    Drivetrain
    Rear-wheel drive · Four-wheel drive

Information, not instruction

CarGeek is a reference, not a service manual. Its pages are written from public sources and from what other people have found, never from a manufacturer's own service information, so they can be wrong or incomplete for your particular vehicle. Some of what they describe carries real risk: high voltage, fuel under pressure, stored energy, hot and moving parts.

Have anything you intend to act on checked by a trained person against the manufacturer's own procedure for your vehicle. Nothing here replaces that procedure.

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