Rear differential seizing at low mileage, only CTS-V recalled
"Could lock up at highway speeds" without warning
Check engine light: On
The dominant complaint category (~90 of 146 complaints): rear differential seizing or failing at relatively low mileage, with 'loud roaring, grinding, or whining noise from rear end,' metal shavings in the differential fluid, and reports the differential 'could lock up at highway speeds' without warning. Only the CTS-V trim was recalled (Campaign 20V038000) for this defect, despite identical differential parts in standard CTS models — one owner states 'same part, same thing is wrong,' but non-V models are excluded.
40,000 – 100,000 mi
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Multi-month delays awaiting recall repair parts
Dealers report parts "discontinued" or on 6-month+ backorder
Check engine light: On
Multi-month delays await recall repair parts, with dealers reporting parts 'discontinued' or on 6-month+ backorder, leaving the differential defect unrepaired.
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Transmission shift cable detachment while driving
Vehicle stuck in gear, unable to shift to Park or Neutral
Check engine light: On
Transmission shift cable detachment while driving causes the vehicle to become stuck in gear, unable to shift to Park or Neutral.
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Front magnetic ride strut and brake system wear
Costly component replacement
Check engine light: Off
Brake system overhaul and front magnetic ride strut replacement, along with rear pad replacement, have been documented as costly repairs.
$1,800 – $2,40085,000 – 102,000 mi
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Steering Wheel Position Sensor May Fail
The steering wheel position sensor may fail
Check engine light: Off
The steering wheel position sensor may fail. This is among the more frequently reported issues on this generation, with 142 owner reports on file.
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SRS Light Due to Passenger Seat Sensor Failure
The SRS light comes on due to passenger seat sensor failure
Check engine light: Off
The SRS light comes on due to passenger seat sensor failure. This is among the more frequently reported issues on this generation, with 114 owner reports on file.
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Check Engine Light Due to Gas Cap Issue
The check engine light comes on due to a gas cap issue
Check engine light: On
The check engine light comes on due to a gas cap issue. This is among the more frequently reported issues on this generation, with 100 owner reports on file.
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Cadillac CTS Reverse Light Cover Panel Falls Off and Is Difficult to Replace
The reverse light cover panel falls off and is difficult to replace
Check engine light: Off
The reverse light cover panel falls off and is difficult to replace. This is among the more frequently reported issues on this generation, with 88 owner reports on file.
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Front and Rear Light Bulbs May Fail
The front and rear light bulbs may fail
Check engine light: Off
The front and rear light bulbs may fail. This is among the more frequently reported issues on this generation, with 86 owner reports on file.
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The Check Engine Light With Code: P0011, P0014, P0021, P0024, P0341, P0346, P0336, and/or P0391
The check engine light comes on with one or more of codes P0011, P0014, P0021, P0024, P0341, P0346, P0336, and/or P0391
Check engine light: On
The check engine light comes on with one or more of codes P0011, P0014, P0021, P0024, P0341, P0346, P0336, and/or P0391. This is among the more frequently reported issues on this generation, with 54 owner reports on file.
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Rear Axle Pinion Seal May Leak
The rear axle pinion seal may leak
Check engine light: Off
The rear axle pinion seal may leak. This is among the more frequently reported issues on this generation, with 51 owner reports on file.
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Reduced Power and Check Engine Light
Reduced power occurs with the check engine light on
Check engine light: On
Reduced power occurs with the check engine light on. This is among the more frequently reported issues on this generation, with 35 owner reports on file.
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Cadillac CTS Transmission and Transfer Case Input/Output Shaft Failure Issues With Multiple Repairs
Transmission and transfer case input/output shaft failure issues occur with multiple repairs
Check engine light: Off
Transmission and transfer case input/output shaft failure issues occur with multiple repairs. This is among the more frequently reported issues on this generation, with 19 owner reports on file.
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Contamination of Extended Life Coolant
Contamination of the extended life coolant occurs
Check engine light: Off
Contamination of the extended life coolant occurs. This is among the more frequently reported issues on this generation, with 10 owner reports on file.
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Rear differential seizing or failing at relatively low mileage (40,000-100,000 miles) is the dominant complaint category — 'loud roaring, grinding, or whining noise from rear end,' metal shavings in the differential fluid, and reports the differential 'could lock up at highway speeds' without warning. Only the CTS-V trim was recalled for this defect, despite identical differential parts in standard CTS models — one owner states 'same part, same thing is wrong,' but non-V models are excluded.