The 2015 CTS-V with its LSA supercharged 6.2L is a beast when healthy, but the high-performance TR6060 transmission and aggressive driving demands create predictable weak points. Heat management and drivetrain stress are the recurring themes.
Symptoms: Milky transmission fluid indicating coolant mixing, Overheating transmission temps on repeated hard pulls, Pink or strawberry-colored coolant in overflow tank, Transmission slipping or delayed engagement after contamination
Fix: Replace transmission oil cooler (integrated with radiator assembly on some builds), flush both cooling system and transmission completely, replace transmission fluid and filter. If caught late, internal transmission damage requires rebuild. 6-8 hours labor for cooler replacement and flush, 20+ hours if trans needs rebuild.
Estimated cost: $1,200-2,500 for cooler/flush, $4,500-7,000 if transmission damaged
Rear Differential Fluid Leaks & Bearing Wear
Occasional · medium severity
Typical onset: 70,000-120,000 mi
Symptoms: Whining or howling noise from rear end under load or deceleration, Fluid leaking from pinion seal or cover gasket, Clunking during hard launches from limited-slip wear, Metal shavings in differential fluid during service
Fix: Pinion seal replacement is 3-4 hours, but bearing noise typically means full differential rebuild or replacement with upgraded internals. Many owners upgrade to aftermarket diff while it's apart. NHTSA recall addressed some units but didn't catch all problem diffs.
Estimated cost: $600-1,000 for seal, $2,200-3,800 for rebuild with bearings
Supercharger Heat-Soak & Intercooler Pump Failure
Common · medium severity
Symptoms: Power loss after successive hard pulls (heat soak), Intercooler fluid low warnings on dash, Whining or grinding from intercooler pump area, Temps climbing beyond 140°F on performance monitor
Fix: Intercooler pump assembly replacement is straightforward, 2-3 hours. Heat soak is design-limited but improved with upgraded heat exchanger or auxiliary cooling mods. Stock system adequate for street but marginal for track.
Estimated cost: $800-1,200 for pump, $1,500-2,500 for upgraded cooling system
Piston Ring Land Failure (Track/Modified Cars)
Rare · high severity
Typical onset: 50,000-90,000 mi
Symptoms: Excessive oil consumption (more than 1 qt per 1,000 mi), Blue smoke on startup or deceleration, Misfires on one or more cylinders, Low compression readings on leak-down test, Knock/rattle from damaged piston skirts
Fix: LSA engines pushed hard (especially with pulley/tune mods) can crack ring lands from detonation or heat. Requires engine-out rebuild with forged pistons if you're keeping power levels high. 35-45 hours labor for full rebuild. Many opt for short block replacement instead of repair.
Estimated cost: $8,000-14,000 for rebuild with forged internals, $6,000-9,000 for GM short block replacement
Transmission Mount Failure & Driveline Vibration
Common · low severity
Typical onset: 40,000-80,000 mi
Symptoms: Clunking on hard shifts or throttle transitions, Vibration through floorboards at highway speed, Excessive driveline movement visible during launches, Rattling during deceleration in gear
Fix: Transmission mount deteriorates from high torque loads. Replace with OEM or upgraded polyurethane mount. 1.5-2 hours labor. Many do all engine/trans mounts at once while there.
Estimated cost: $250-450 for trans mount, $600-900 for all mounts
Fuel System Restrictions & High-Pressure Pump Issues
Occasional · medium severity
Typical onset: 80,000-130,000 mi
Symptoms: Lean fuel trims at wide-open throttle, Hesitation or stumbling under full boost, Hard starting when hot, Fuel pressure dropping below 58 psi at demand, Check engine light for fuel trim codes
Fix: In-tank fuel filter isn't serviceable separately (part of pump module), and high-pressure pump on engine can weaken. Fuel filter element replacement requires dropping tank, 3-4 hours. High-pressure pump is 2-3 hours. Modified cars often need both plus upgraded lines.
Estimated cost: $800-1,400 for pump module, $1,200-1,800 for both pump and filter service
Owner tips
Change differential fluid every 30k miles with track use, 50k for street — cheap insurance against bearing failure
Flush transmission and intercooler fluids every 40-50k miles; heat is your enemy on forced-induction V8s
If modifying beyond 600whp, budget for built shortblock and upgraded diff — stock drivetrain lives on borrowed time
Pre-purchase inspection must include compression test and borescope — piston damage isn't always obvious until catastrophic
Keep fuel system clean with quality gas and occasional injector service; direct injection plus high boost creates carbon issues long-term
Absolutely buy one if you can wrench or have a trusted shop — incredible performance value, but only if you maintain it properly and respect that 556hp comes with 556hp consequences.
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: High-performance AGM battery required for supercharged engine; located in trunk
As an Amazon Associate, OLP earns from qualifying purchases — how we link. This never changes the specs we publish.
Every control module on the 2009-2015 Cadillac CTS-V — 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.
⚠️ Function integrated into BCM; key fob programming 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.
AIR BAGS:FRONTAL:DRIVER SIDE:INFLATOR MODULE · 26V329000
2026-05-21
General Motors, LLC (GM) is recalling certain 2015 Cadillac Escalade, Escalade ESV, XTS, 2015-2016 Cadillac ATS, CTS, and SRX vehicles. The front-driver air bag inflator may rupture during deployment.
Consequence: An inflator rupture may result in sharp metal fragments striking the driver or other occupants, resulting in serious injury or death.
Remedy: Dealers will replace the front-driver air bag module, free of charge. Interim letters notifying owners of the safety risk were mailed June 19, 2026. Additional letters will be mailed once the remedy is available. Owners may contact Cadillac customer service at 1-800-333-4223. The manufacturer's number for this recall is N262555870. Vehicle Identification Numbers (VINs) involved in this recall became searchable on NHTSA.gov on May 21, 2026.
POWER TRAIN:DRIVELINE:DIFFERENTIAL UNIT · 20V038000
2020-01-23
General Motors LLC (GM) is recalling certain 2014-2015 Cadillac CTS-V Sport vehicles equipped with 3.6L Twin Turbo V6 engines. The roll pins in the rear-axle differential may fracture.
Consequence: If the roll pins fracture while the vehicle is in motion, the rear wheels may lock up and the driver can lose control of the vehicle, increasing the risk of a crash.
Remedy: GM will notify owners, and dealers will repair or replace the rear axle differential, free of charge. The recall began May 1, 2020. Owners may contact Cadillac customer service at 1-800-333-4223. GM's number for this recall is N192279370.
General Motors LLC (GM) is recalling certain 2014-2016 Cadillac CTS vehicles, equipped with heated front seats. The flexible heating mats in the front seats may be damaged over time, resulting in the seat heaters producing excessive heat.
Consequence: In cold ambient temperatures, the seat heaters in these vehicles can turn on automatically when the vehicle is remotely started. If a damaged seat heater is turned on while no one is inside the vehicle, the damaged seat heater can overheat, increasing the risk of a fire.
Remedy: GM will notify owners, and dealers will recalibrate the body control module, disabling the automatic activation of the heated seat when the vehicle is remotely started, free of charge. The recall began November 1, 2018. Owners may contact Cadillac customer service at 1-800-458-8006. GM's number for the recall is 18286.
SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES · 15V358000
2015-06-09
General Motors LLC (GM) is recalling certain model year 2015 Cadillac ATS and CTS vehicles. The affected vehicles have a bracket between the brake pedal assembly and the rod that actuates the brakes that may fracture during normal brake pedal operation.
Consequence: If the bracket fractures, the driver would not be able to apply the brakes, increasing the risk of a crash.
Remedy: GM will notify owners, and dealers will inspect the vehicle and replace any affected bracket, free of charge. The recall began July 6, 2015. Owners may contact Cadillac customer service at 1-800-458-8006. GM's number for this recall is 15352.
Performance
Horsepower
640hp
Torque
630lb-ft
0–60 mph
3.7sec
Quarter mile
11.9sec
Top speed
200mph
Capability & size
Curb weight
4,145lb
Wiper blades
2016-2019 CTS-V (third generation). 2015 model year was skipped for CTS-V, but including for completeness with 2016+ specs
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 2015 Cadillac CTS-V 6.2L Supercharged V8 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.