Timing chain wear — tied to a GM manufacturer coverage program
timing chain wear
Check engine light: On
One documented case explicitly noted as "wear under customer satisfaction program" at 30,000 miles — directly matching NHTSA's referenced TSB 11340C, a Special Coverage Adjustment for timing chain wear on 2007-2009 CTS vehicles, up to 120,000 miles. This is real, common, GM-acknowledged content, similar to the Prius's expired brake actuator warranty program and the Camry/Avalon dashboard warranty program found elsewhere — but unlike the Prius's program, which we confirmed expired, we have NOT confirmed whether this GM program is still active for lower-mileage examples changing hands today. Coverage is capped at 120,000 miles, not indefinite. Don't present this as a guaranteed free fix without verifying current status. A timing chain issue like this triggers a check-engine light.
covered under GM program (up to 120,000 mi)30,000 mi
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Catastrophic camshaft and engine block failure — severe, very early-life
major internal engine damage
Check engine light: On
One documented case of major internal damage to the camshaft and engine block, at approximately $3,500 at just 23,760 miles — a serious, early failure that stands out even among this vehicle's many engine problems. That works out to a range of roughly $2,800-$3,850. This may be related to the oil consumption/oil pressure problem below, reported at a similarly early mileage. A failure this severe would trigger a check-engine light.
$2,800 – $3,85023,760 mi
The documented cost was reported as approximately $3,500. Notably early, and possibly related to the oil consumption and oil pressure problems below.
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Ignition coil / spark plug / coil pack failures — very frequent, recurring
misfiring or an O2 sensor malfunction
Check engine light: On
Reported numerous times across a wide mileage range (44,000-87,000 miles): ignition coil failure with O2 sensor malfunction ($600 at 87,000 miles), spark plugs misfiring in cylinders 1 and 3 ($500 at 56,800 miles), and multiple coil pack failures and replacements ($90 - $400 at 44,000-63,600 miles). Costs run $150 - $600 depending on which part fails. Misfires like this typically trigger a check-engine light.
$150 – $60044,000 – 87,000 mi
Range across many documented cases — the most frequently recurring engine problem for this vehicle.
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Water pump failure (main)
main water pump failure
Check engine light: Off
The main water pump failed twice independently: $550 at 62,200 miles, and $500 at 61,300 miles (the low figure likely a partial or warranty repair). We're presenting the real $500 - $550 range as reported. A water pump leak/failure typically doesn't trigger a check-engine light on its own.
$500 – $55061,300 – 62,200 mi
Two independent failures at similar mileage — the $500 figure likely reflects a partial or warranty repair.
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Auxiliary water pump failure
auxiliary water pump failure
Check engine light: Off
A separate auxiliary water pump failure, distinct from the main water pump above, at $1,499 at 105,000 miles. We've widened it into a $1,199-$1,649 range. A water pump failure typically doesn't trigger a check-engine light on its own.
$1,199 – $1,649105,000 mi
Distinct from the main water pump problem above.
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Fuel injector failure
fuel injector failure
Check engine light: On
One documented fuel injector failure at $973 at 87,800 miles. We've widened it into a $778-$1,070 range. A fuel delivery fault like this triggers a check-engine light.
$778 – $1,07087,800 mi
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Throttle sensor / exhaust cam actuator issues — early-life
a stuck throttle sensor or a cam actuator misfire
Check engine light: On
Reported early: a throttle sensor stuck open at 29,800 miles, and an exhaust cam actuator Bank 2 misfire at just 14,000 miles — very early. No cost figures were given for either case. Sensor/actuator faults like these trigger a check-engine light.
14,000 – 29,800 mi
No cost figures given. Notably early-life, part of a broader cluster of early engine issues (7,000-30,000 mi) on this vehicle.
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Catalytic converter — multiple replacements, early-life
repeated catalytic converter replacement
Check engine light: On
Reported with multiple replacements across a wide but generally early mileage range (7,791-42,300 miles). A catalytic converter fault triggers a check-engine light.
7,791 – 42,300 mi
No cost figures given. Part of a broader cluster of early engine issues (7,000-30,000 mi) on this vehicle.
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Oil consumption / oil pressure issues — early-life
excessive oil consumption and low oil pressure
Check engine light: Off
One documented report of excessive oil consumption and low oil pressure at 23,000 miles — notably early, and close in mileage to the catastrophic camshaft/block failure above, suggesting these may be related symptoms of the same underlying issue on some vehicles. Gradual oil consumption typically doesn't trigger a check-engine light until it becomes severe.
23,000 mi
Close in mileage to the catastrophic camshaft/block failure above — may be related symptoms of the same underlying issue.
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Steering wheel position sensor may fail
Steering wheel position sensor fails
Check engine light: Off
Steering wheel position sensor fails. 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
SRS warning light triggered by a failed passenger seat sensor
Check engine light: Off
SRS warning light triggered by a failed passenger seat sensor. This is among the more frequently reported issues on this generation, with 104 owner reports on file.
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Check engine light due to gas cap issue
Check engine light from a gas cap issue
Check engine light: On
Check engine light from a gas cap issue. This is among the more frequently reported issues on this generation, with 89 owner reports on file.
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Reverse light cover panel falls off
Reverse light cover panel falls off
Check engine light: Off
Reverse light cover panel falls off. This is among the more frequently reported issues on this generation, with 88 owner reports on file.
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Front or rear light bulbs may fail
Front or rear light bulbs fail
Check engine light: Off
Front or rear light bulbs fail. This is among the more frequently reported issues on this generation, with 78 owner reports on file.
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Check engine light with a cluster of powertrain codes
Check engine light with a cluster of related powertrain diagnostic codes (P0011/P0014/P0021/P0024/P0341/P0346/P0336/P0391)
Check engine light: On
Check engine light with a cluster of related powertrain diagnostic codes (P0011/P0014/P0021/P0024/P0341/P0346/P0336/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
Rear axle pinion seal leaks
Check engine light: Off
Rear axle pinion seal leaks. This is among the more frequently reported issues on this generation, with 39 owner reports on file.
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Reduced power and check engine light
Reduced power accompanied by a check engine light
Check engine light: On
Reduced power accompanied by a check engine light. This is among the more frequently reported issues on this generation, with 35 owner reports on file.
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Contamination of extended life coolant
Extended-life coolant becomes contaminated
Check engine light: Off
Extended-life coolant becomes contaminated. This is among the more frequently reported issues on this generation, with 10 owner reports on file.
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This vehicle shows an unusually high concentration of engine issues occurring quite early (7,000-30,000 miles) — throttle sensor, exhaust cam actuator, catalytic converter, oil pressure, and a severe camshaft/block failure all cluster in this early range, distinct from higher-mileage timing chain and water pump issues that read as more typical wear. The timing chain problem below is covered by a GM Customer Satisfaction Program (TSB 11340C, covering 2007-2009 CTS vehicles up to 120,000 miles). Whether that program is still open has not been confirmed, so check your eligibility before assuming the repair is free.