The 2017 CTS is a solid luxury sedan undermined by catastrophic 2.0T engine failures and transmission cooling issues. The 3.6L V6 is far more reliable, but electric power steering and transmission mount problems affect both powertrains.
Symptoms: sudden loss of power under load, metallic knocking/rattling from engine, oil consumption between changes, check engine light with misfire codes, complete engine seizure in worst cases
Fix: Carbon buildup on intake valves and oil starvation lead to piston ring land failure, scoring cylinder walls. Requires complete engine rebuild or replacement. 18-24 hours labor for short block swap, 30+ hours for full teardown rebuild with machine work.
Estimated cost: $6,500-12,000
Transmission Oil Cooler Line Leaks and Failure
Common · medium severity
Typical onset: 60,000-100,000 mi
Symptoms: transmission fluid puddles under vehicle, burnt transmission fluid smell, harsh shifting or slipping, transmission overheating warnings, low fluid level on dipstick
Fix: The quick-connect fittings on cooler lines crack or the cooler itself develops leaks. Lines alone are 2-3 hours, but often the radiator-mounted cooler needs replacement too (4-5 hours). Flush and refill required.
Estimated cost: $800-1,800
Electric Power Steering Assist Failure
Occasional · high severity
Typical onset: 50,000-90,000 mi
Symptoms: power steering assist disabled message on dash, extremely heavy steering effort, intermittent loss of assist, grinding noise from steering column, service power steering warning
Fix: Electric steering motor or control module fails, covered by NHTSA recalls but many units fail outside recall criteria. Steering column removal required. 3-4 hours for motor, 2 hours for module if available separately.
Estimated cost: $1,200-2,500
Transmission Mount Collapse
Common · low severity
Typical onset: 70,000-110,000 mi
Symptoms: clunking when shifting from park to drive, excessive vibration at idle in gear, visible engine/transmission sag, harsh engagement into reverse, drivetrain movement felt during acceleration
Fix: Hydraulic transmission mount separates internally, allowing excessive drivetrain movement. Requires lift access, support of transmission/subframe. 2.5-3 hours labor, straightforward replacement.
Estimated cost: $400-700
CUE Infotainment System Freezing and Failure
Common · low severity
Symptoms: touchscreen unresponsive or laggy, system reboots randomly, backup camera black screen, HVAC controls frozen, bluetooth connectivity drops
Fix: Cadillac User Experience system has notoriously buggy software and failing capacitive touch controllers. Hard reset (hold home + fast-forward 10 seconds) provides temporary relief. Control module replacement is 1.5 hours but often doesn't permanently fix the issue.
Estimated cost: $800-1,500
High-Pressure Fuel Pump Failure (2.0T primarily)
Occasional · medium severity
Typical onset: 70,000-120,000 mi
Symptoms: extended cranking before starting, rough idle when cold, hesitation under acceleration, fuel trim codes P0087/P0088, stalling after startup
Fix: Cam-driven high-pressure pump wears internally, metal shavings contaminate fuel system. Requires pump, fuel filter, and often injector cleaning. 4-5 hours labor with fuel system depressurization and cam cover removal.
Estimated cost: $1,400-2,200
Owner tips
If buying a 2.0T, get pre-purchase compression and leak-down test — many engines are ticking time bombs by 60k miles
Check transmission fluid color and level religiously; catching cooler leaks early prevents transmission damage
Budget for CUE infotainment annoyance or plan to ignore non-critical functions — there's no real permanent fix
The 3.6L V6 avoids the catastrophic 2.0T issues and is worth the fuel economy penalty for reliability
Buy the 3.6L V6 only, under 60k miles with service records, and budget $2k/year for luxury car maintenance quirks — avoid the 2.0T entirely.
AI-assisted summary drawn from NHTSA recall data, our labor-times database, and platform knowledge. Not a substitute for a pre-purchase inspection on a specific vehicle.
Fitment notes: AGM battery required; located in trunk; premium audio and advanced electronics require high reserve capacity
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Every control module on the 2014-2019 Cadillac CTS — where it lives, replacement time, and what it takes to program a replacement. Modules marked dealer / factory tool won't work after a part swap alone — budget for programming.
Heating Ventilation and Air Conditioning Control Module (HVAC)2.5 hr R&Rdealer / factory tool +0.3 hr▸ programming details
Remote Control Door Lock Receiver (RCDLR)0.8 hr R&Rdealer / factory tool +0.5 hr▸ programming details
📍 Behind rear seat or trunk area
🔧 MDI + GDS2
⚠️ Key fob programming required
Seat Control Module (SCM)0.6 hr R&Rrelearn only +0.1 hr▸ programming details
📍 Under driver or passenger seat
🔧 MDI + GDS2 or basic scan tool
⚠️ Memory seat relearn required
Aftermarket tool coverage varies by software version and vehicle build — treat "aftermarket tool" rows as "usually possible" and verify against your tool maker's coverage list before promising a customer. Spot a wrong location or hour? Tell us — corrections ship fast here.
General Motors LLC (GM) is recalling certain 2016-2018 Cadillac CTS, 2017-2018 Cadillac ATS, Chevrolet Camaro, and Chevrolet Corvette vehicles. The electric power steering (EPS) assist may fail.
Consequence: A loss of power steering assist can require greater steering effort, especially at low speeds, increasing the risk of a crash.
Remedy: Dealers will replace the power steering gear assembly, free of charge. Owner notification letters were mailed April 15, 2025. Owners may contact Cadilac customer service at 1-800-333-4223 or Chevrolet customer service at 1-800-222-1020. GM's number for this recall is N252497020.
STEERING:ELECTRIC POWER ASSIST SYSTEM · 19V086000
2019-02-07
General Motors LLC (GM) is recalling certain 2016-2018 Cadillac CTS, and 2017 Cadillac ATS, Chevrolet Camaro, and Chevrolet Corvette vehicles. The electric power steering (EPS) assist system may fail.
Consequence: Loss of power steering assist would require a higher steering effort, especially at lower speeds, which may increase the risk of a crash.
Remedy: GM will notify owners, and dealers will replace the power steering gear assembly, free of charge. The recall began June 13, 2019. GM' number for this recall is N182182760.
Size-standard part numbers — verify your connector type before buying. Rear blades are model-specific; check the package's vehicle list.
Fuel economy figures are EPA data via fueleconomy.gov (median across matching trims). Performance figures are compiled estimates for the 2017 Cadillac CTS 2.0L Turbo I4 and can vary by trim.
🔧 Database maintained under the daily editorial review of Chris Hackleman · Master Technician · 20+ years and Jeff Moore · Master Lexus & Toyota Mechanic · 20+ years.