What are the most common Cadillac CT5 problems?
According to Au7o's analysis of 525+ owner reports, the 2024 Cadillac CT5 has 13 documented issues. The most frequently reported are: GM 6.2L V8 Engine Recall for Connecting Rod Bearing Failure, LT4 Supercharged V8 Premature Engine Failure, 2.0T LSY Engine Timing Cover Oil Leak. Of these, 2 are rated critical and should be addressed promptly.
Is the Cadillac CT5 reliable?
The 2024 Cadillac CT5 has 13 known issues documented across 525+ owner reports. 2 issues are rated critical: GM 6.2L V8 Engine Recall for Connecting Rod Bearing Failure and LT4 Supercharged V8 Premature Engine Failure. Prospective buyers should inspect for these issues and factor potential repair costs into their purchase decision. Regular maintenance following the manufacturer's schedule helps prevent many common problems.
How much does it cost to fix common Cadillac CT5 problems?
Repair costs for known Cadillac CT5 issues range from $0 to $15,000, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, GM 6.2L V8 Engine Recall for Connecting Rod Bearing Failure, typically costs $0-$0 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.
What is the 2021-2024 Cadillac CT5 GM 6.2L V8 Engine Recall for Connecting Rod Bearing Failure?
After widespread engine failures and an NHTSA investigation, GM recalled all 2021-2024 vehicles equipped with the 6.2L V8 engine including the CT5-V. The recall addresses potential connecting rod bearing failure that can cause engine seizure, stalling, or fire risk. The recall co… Repairs typically run $0-$0. Severity: high.
What is the 2020-2024 Cadillac CT5 LT4 Supercharged V8 Premature Engine Failure?
The 6.2L supercharged LT4 V8 in CT5-V Blackwing models has experienced premature engine failures including bottom-end bearing failures, lifter collapse, and metal shavings found in oil. Failures have been reported as early as 5,000-15,000 miles. Car and Driver documented a catast… Repairs typically run $0-$15,000. Severity: high.
What is the 2020-2024 Cadillac CT5 2.0T LSY Engine Timing Cover Oil Leak?
The 2.0T turbocharged four-cylinder (LSY) in the CT5 can develop oil leaks from the timing cover gasket. The gasket develops cracks after heat cycling, causing oil to seep from the front of the engine. In some cases, this leads to noticeable oil consumption between changes. GM re… Repairs typically run $500-$1,500. Severity: medium.
What is the 2020-2025 Cadillac CT5 Premature 12V Battery Drain / Parasitic Draw (Memory Seat Module)?
Owners report the 12V battery going dead when the car sits, with factory batteries dying in as little as two years. Beyond normal high parasitic draw of modern electronics, a recurring GM culprit is the driver-seat control module / Memory Seat Module (MSM), which can develop a se… Repairs typically run $250-$900. Severity: medium.
What is the 2024-2025 Cadillac CT5 Super Cruise 'Unavailable' Message — System Inoperative from Delivery?
Owners report Super Cruise repeatedly displays an 'Unavailable' message and cannot be activated; OnStar troubleshooting fails and dealers escalate to GM engineering with no ETA, citing PIC6557B (Super Cruise Unavailable Message, dated Sept. 25, 2024)
.
Multiple 2025 CT5 owners… Repairs typically run $0-$0. Severity: medium.
What is the 2020-2025 Cadillac CT5 2.0L Turbo (LSY) Excessive Oil Consumption and PCV System Failure?
Owners of four-cylinder CT5 550T (and CT4-shared LSY platform) models report higher-than-expected oil consumption, often exceeding GM's 'acceptable' threshold of one quart per ~2,000 miles. The valve-cover-integrated PCV system is a frequent contributor, and on worse cases worn p… Repairs typically run $150-$4,500. Severity: medium.
What is the 2020-2025 Cadillac CT5 Driver Seat Massage and Lumbar/Bolster Module Failure?
A widely reported CT5 interior failure: the driver-seat massage and adjustable lumbar/bolster functions stop working. Dealers diagnose this as a failed seat 'module' — an all-in-one air-pump, valve and electronics unit feeding the seat air bladders. Owners report the failure from… Repairs typically run $350-$1,200. Severity: medium.
What is the 2022-2024 Cadillac CT5 Tremec 6-Speed Manual 2nd Gear Notchiness and Difficulty?
CT5-V Blackwing models equipped with the Tremec TR-6060 6-speed manual transmission frequently exhibit difficulty and notchiness when shifting into 2nd gear. The issue occurs both when cold and when hot, particularly when downshifting from highway speeds. Some dealers have attrib… Repairs typically run $0-$4,000. Severity: low.
What is the 2020-2024 Cadillac CT5 Sunroof / Headliner Rattle and Creak?
Owners of sunroof-equipped CT5 models report creaking and rattling from the roof/sunroof and headliner area, especially over bumps and at speed. GM has a related sunroof-creak service bulletin (TSB 19-NA-096) that calls for dropping the headliner and torquing the sunroof module b… Repairs typically run $100-$600. Severity: low.
What is the 2020-2024 Cadillac CT5 Gloss Black Exterior Trim (B-Pillar / Window Surround) Peeling and Delamination?
A common cosmetic defect on 2020-2024 CT5 models: the gloss-black exterior B-pillar appliqués and window-surround trim bubble, haze, and delaminate, with the clear top layer lifting and flaking to expose a dull layer beneath. Owners describe small bubbles or a milky look first, p… Repairs typically run $0-$500. Severity: low.
What is the 2020-2024 Cadillac CT5 High-Speed Wind Noise / Whistle from Windshield A-Pillar Weatherstrip?
CT5 owners report a persistent whistle or high-pitched 'tone' (described as ringing in the ears) at highway speeds, typically 65 mph and up, plus buzzing from the door/window/headliner area at 50+ mph. Sources isolated by owners and dealers include the windshield weatherstrip lif… Repairs typically run $100-$600. Severity: low.
What is the 2020-2025 Cadillac CT5 Performance and Carbon-Ceramic Brake Squeal and Grinding Noise?
CT5 and CT5-V owners (and especially CT5-V Blackwing buyers with the optional Brembo carbon-ceramic package) report loud brake squeal, and at low speed a grindy or metal-on-metal sound, sometimes as early as ~5,000 miles. The copper-free friction-material formulation now mandated… Repairs typically run $250-$3,000. Severity: low.
What is the 2020-2025 Cadillac CT5 10-Speed Transmission Adaptive Learning and Shift Quality?
The CT5 uses GM's 10-speed automatic (10L80) that can exhibit harsh shifts, delayed engagement, and shift hunting, particularly when the adaptive learning resets. The 10-speed has very complex shift logic and can take 500+ miles to fully adapt to a driver's pattern after a batter… Repairs typically run $0-$500. Severity: low.
