2015 Cadillac Cts

The CUE infotainment touchscreen suffers from the same widespread delamination issue as all CUE-equipped Cadillacs. The screen layers separate, creating a cloudy or bubbly appearance, and touch responsiveness degrades to the point where the system becomes unusable. Climate controls routed through the CUE screen become inaccessible, forcing manual workarounds.

Replace the CUE touchscreen display. GM's Customer Satisfaction Program 14311 extended coverage to 4 years/50,000 miles but has likely expired for 2016 models. Aftermarket replacement screens with improved adhesive technology are available for $200-$400 and install in about 30 minutes with basic tools.

The 3.6L LGX V6 engine consumes oil between changes at a rate some owners find excessive, with reports of 1 quart consumed every 2,000-3,000 miles. GM considers up to 1 quart per 2,000 miles within specification for this engine. The piston ring design allows oil to pass into the combustion chambers, and the high-feature DOHC valve train has multiple potential leak points at the valve cover gaskets.

Monitor oil level between changes and top off as needed. If consumption exceeds GM's specification, an oil consumption test can be performed under powertrain warranty. Using a heavier-weight synthetic oil (0W-40 instead of 5W-30) may reduce consumption in some cases. Severe oil consumption may require piston ring replacement.

The electronic parking brake (EPB) can fail to engage, fail to release, or engage unexpectedly while driving. Owners report a 'Service Parking Brake' warning message, the parking brake applying itself while the vehicle is moving at low speed, and the inability to release the parking brake after engaging it. The EPB actuator motor or its control module is typically at fault.

Dealer diagnoses the EPB system using GM diagnostic tools. Replace the EPB actuator motor on the affected caliper. Reprogram the EPB module with the latest software calibration. If the issue is in the EPB switch on the center console, replace the switch. Reference GM TSB 16-NA-182 for electronic parking brake diagnosis.

CTS models equipped with Magnetic Ride Control (MRC) suspension experience premature shock absorber failure. The MRC shocks contain magnetorheological fluid that leaks from worn seals, causing a visible fluid trail on the shock body and degraded ride quality. Owners notice excessive body movement, bottoming over bumps, and a warning message on the dash.

Replace the failed MRC shock absorber(s) with OEM or aftermarket MRC-compatible units. Genuine GM MRC shocks are expensive. Aftermarket options from companies like Arnott and Bilstein offer MRC-compatible replacements at lower cost. Some owners convert to conventional high-performance shocks to eliminate the MRC system entirely.

Water leaks into the trunk and rear seat area through the rear glass seal, trunk seal, or tail light gaskets. The water pools in the spare tire well and soaks the trunk carpet, causing mold, mildew, and a musty smell. In severe cases, the water reaches the rear seat area and damages the wiring harness for the rear seat heaters and power recline modules.

Inspect the trunk weatherstripping, rear glass seal, and tail light gaskets for deterioration. Replace any failed seals and reapply sealant as needed. Dry the trunk completely, remove and dry the spare tire well carpet, and check for mold growth. If electronics have been water-damaged, inspect and replace affected modules.

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.

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.

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.

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.

If the bracket fractures, the driver would not be able to apply the brakes, increasing the risk of a crash.

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.