2018 Cadillac CTS Service and Repair Manual

This 2018 Cadillac CTS factory service and repair manual matches this exact model year, including the 3.6L V6 (VIN S, LGX) and 6.2L V8 (VIN 6, LT4), so the torque values and diagnostic steps inside are the ones Cadillac actually published for your car, not a stand-in from a different CTS generation.

Engines covered

• 6.2L V8 (376 cu in) — OHV, supercharged, gasoline
• 3.6L V6 (222 cu in) — DOHC, naturally aspirated, gasoline
• 2.0L inline-four (122 cu in) — DOHC, turbocharged, gasoline
• 3.6L V6 (217 cu in) — DOHC, turbocharged, gasoline

Body styles covered

• 4-door sedan

Trims covered

• Base
• Luxury
• Premium
• Premium Luxury
• V
• Vsport
• Vsport Premium Luxury

Known issues on the 2018 CTS. Two recalls are on federal record for this model year, both for the electric power steering (EPS) assist system: GM found the EPS assist may fail, and a loss of assist can require greater steering effort, especially at low speeds, increasing the risk of a crash. Owners have filed 8 complaints for the year. The factory diagnostic and repair procedures behind the EPS system are here.

Whether you're tracing an EPS assist fault or working through a supercharged LT4 service interval, it keeps you on the OEM specification for your specific 2018 CTS.