This service bulletin provides information on some vehicles that may rock or move slightly forward or rearward while in Park at start up after cold soak. This condition may be accompanied by a clunk noise. This is a slight movement that is more often seen visually, rather than felt, when viewed from the outside and using the auto-start feature, if equipped.
full bulletin at NHTSA ↗2007 Cadillac CTS powertrain problems
severe Owners of the 2007 Cadillac CTS have filed 29 NHTSA complaints about the powertrain, typically surfacing around 82,000 miles at roughly $2,500 to repair (U.S. federal records, as of August 2026). Source: NHTSA Office of Defects Investigation. See powertrain across all vehicles →
Failure mileage
Complaints
29
Recalls
0
Avg fix
$2,500
| Model year | powertrain complaints |
|---|---|
| 2005 CTS | 71 |
| 2006 CTS | 41 |
| 2007 CTS (this page) | 29 |
| 2008 CTS | 15 |
| 2009 CTS | 28 |
| 2011 CTS | 23 |
2crashes
1fire
When does it fail?
Of the 29 powertrain complaints filed for the 2007 Cadillac CTS, here's the actual mileage breakdown — failures cluster heaviest at 0-25,000 mi.
0-25k
25-50k
50-75k
75-100k
100-125k
125-150k
150k+
Each bar shows the share of total complaints filed at that mileage range. Peak failure window highlighted. Some owners report problems earlier; some make it well past 150,000 miles symptom-free. Maintenance habits and driving conditions shift the curve as much as mileage alone.
What stands out
Owners have filed 29 powertrain complaints with NHTSA against this vehicle, but no formal recall covers the issue — the federal record reflects what manufacturers have admitted, not everything owners are reporting.
No new NHTSA powertrain complaint has been filed on this vehicle in over 11 years — the issue may be aging out of the active population.
Is there a fix? Manufacturer service bulletins
The manufacturer has issued service bulletins covering powertrain on this vehicle — documented repair instructions, service campaigns, or warranty extensions sent to dealers. A TSB isn't a recall (it's not a free safety remedy), but it's the manufacturer acknowledging the issue and how to fix it.
GM is receiving damaged (cracked or broken) transmission cores returned to the reman facilities. The damage is being caused either in the removal process by the technician, or inadequate packaging or shipping. This bulletin advises the dealers to be more careful not to damage the transmissions during removal and to package the core properly for return.
full bulletin at NHTSA ↗This bulletin provides information on the harmful effects of water or ethylene glycol in transmission fluid.
full bulletin at NHTSA ↗This service bulletin provides technicians with information to help identify the differences between what is considered a fluid leak, and what is considered fluid seepage.
full bulletin at NHTSA ↗This Warranty Admin service bulletin provides guidelines for Dealers Not Required and for Dealers Required to Contact the PQC for engine or transmission assembly replacement and explains the PQC process, GWM Transaction submission, vehicle service record retention and proper handling of assembly returns for Canadian Dealers only.
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
The failure pattern owners describe
The 2007 Cadillac CTS powertrain shows a pattern of systemic issues owners describe across three main areas. Rear differential problems dominate complaints: seal and gasket leaks that start early in ownership (some at 1,500 miles) recur after dealer repairs. Advanced cases result in complete differential failure—loss of all fluid, grinding noises, wheel lockup, and in several instances, internal destruction (one owner's differential "exploded"). Most troubling, multiple owners report catastrophic failures occurred on highways at 50–70 mph with no warning and near-loss of vehicle control. Several owners say recall parts were on back order for months, delaying repairs for known issues.
Transmission troubles include vehicles stuck in third gear refusing to downshift, sudden unexpected downshifts at highway speed, and total transmission failure requiring rebuild. One owner's rebuilt unit failed again 4.5 years later.
Timing chain wear accompanies heavy oil consumption, causing rough idle, multiple check-engine codes, and engine stall. One timing chain replacement at 1.5 years post-purchase was followed by catastrophic oil loss and a $2,000+ repair bill.
Electrical gremlins—alternator failure, anti-theft mode lockups, and one vehicle catching fire while parked—round out the picture. Dealers acknowledge these problems but cite missing recall parts and coverage gaps. Owners express deep distrust in both manufacturer responsiveness and dealership follow-through.
Same Cadillac CTS powertrain reports on nearby years: 2005 · 2006 · 2008 · 2009
Failure modes owners describe
Rear differential seal leaks and/or differential failure
Differential fluid leaks from seals, gaskets, or other points in the rear-end assembly, leading to fluid loss. Owners report leaks recur after repair attempts. In advanced cases, the differential loses all fluid and fails completely, causing grinding, clunking, loss of power, wheel lockup, or internal destruction (exploded differential with pieces scattered). Multiple owners report this happened at highway speeds with no warning.
When: Some failures reported early (15K–33K miles); others after 4+ years of ownership. One owner reports initial seal leak at 1,500 miles, complete failure at ~15 miles in same week.
Symptoms owners cite: Loud humming or grinding noise from rear end; Loud clunking sound while driving; Difficulty steering or near loss of control; Burning smell; Rear wheels lock up or vehicle unable to move; Oil leaking from rear end/differential housing; Weird noise while driving that stops when heat/AC is used
Codes mentioned: 07V589000, 07204E, 10355C
Repairs/costs cited: Dealer replacements of seals, gaskets, and in severe cases entire differential assembly. One owner spent $2,200 out of pocket. Another had rear differential replaced under warranty at 15K miles. Owners report dealership difficulties obtaining recall-related seals (parts on back order for months).
Recalls/TSBs owners mention: NHTSA Campaign ID 07V589000 (Powertrain: Axle Assembly: Axle Shaft: Seal). Recall issued, but many owners report their VINs not listed as eligible even though they experience identical failures. Recall parts (seals) were on back order at dealerships as of 2008. GM indicated some out-of-recall vehicles would not be covered.
Transmission issues including stuck gears, shifting problems, and failure
Automatic transmission stuck in third gear, refusing to shift through normal gear progression. In other cases, transmission hesitates, jerks, or loses function entirely. One owner reports transmission stuck in second gear while driving at highway speeds. Another describes transmission that dies after 5–10 minutes of driving. Rebuilt transmissions installed in some cases.
When: Variable timing; one owner had transmission rebuilt early in ownership, then failed again 4.5 years later. Another at 43K miles. One vehicle would not move in drive shortly after purchase.
Symptoms owners cite: Car stuck in third gear, will not shift; Transmission hesitation and jerking while driving; Transmission downshifts unexpectedly and will not return to normal drive without manual shift to Neutral; Transmission dies after 5–10 minutes of driving; Transmission will not back up; Engine light illuminated (multiple codes reported)
Repairs/costs cited: Rebuilt transmissions and torque converters installed. One owner paid for full rebuild; another had warranty cover initial repair but faced repeat failure. Costs not detailed in most cases.
Timing chain and tensioner wear/failure
Timing chain tensioner fails due to heavy oil consumption, leading to timing chain slack or failure. Engine stops running or runs with rough idle, multiple diagnostic codes, bad fuel economy, and high oil consumption. One owner reports timing chain replaced in 2011 at ~1.5 years post-purchase but then told car needs over $2,000 in repairs due to no oil.
When: One timing chain replaced August 2011 (~1.5 years after 2010 purchase). Another complaint came after 120K miles. One owner reports heavy oil consumption ongoing for a year.
Symptoms owners cite: Rough idle; Engine light throwing multiple codes; Bad fuel economy; Heavy oil consumption; Pulsating throttle while parked and driving; Engine stops running; No oil in engine after recent oil changes
Repairs/costs cited: Timing chain replacement performed at dealership (August 2011). Subsequent repairs to address low/no oil cost over $2,000. One owner reports timing chain tensioner issues caused timing chain issues that stopped the car.
Recalls/TSBs owners mention: Warranty covered timing chain replacement in one case, but recall warranty voided at 120K miles. Dealership refused to honor recall for owner over 120K miles.
Electrical/alternator failure causing loss of power
Used vehicle purchased with hidden alternator failure. Car cuts off suddenly while driving, including on interstate. Electrical system fails, leaving car unable to operate power steering, hazard lights, or restart. Initially misdiagnosed as battery problem. Seller knowingly concealed prior accident damage.
When: Within 4–5 hours of purchase from private seller.
Symptoms owners cite: Car cuts off suddenly while driving; Unable to crank back up; Complete loss of electrical power while on highway; Unable to control steering; Unable to turn on hazard lights; Loss of all electrical functions
Repairs/costs cited: Alternator identified as root cause by independent mechanics. Vehicle had prior accident damage that should have prevented resale.
Catalytic converter and transmission fire
Vehicle caught fire internally while parked, damage exceeding $20,000. Fire started at transmission/top of transmission area. Owner believes defective catalytic converter and/or transmission caused fire.
When: After vehicle was parked.
Symptoms owners cite: Fire in interior near transmission area
Repairs/costs cited: Fire damage exceeded $20,000. Vehicle towed and held pending investigation.
Recalls/TSBs owners mention: GM Product Liability and ESIS (claims administrator) slow to respond on warranty claim or relief (dragging feet for 2+ months). Dealer unwilling to help. Insurance wants quick settlement. Owner attempting to preserve vehicle for GM safety defect investigation.
Anti-theft system malfunction/stuck in limp mode
Anti-theft system activates unexpectedly, putting vehicle in limp mode or preventing normal operation. Vehicle can still be driven but key cannot be removed from ignition without disconnecting battery. Some vehicles stuck in acceleration safety mode, unable to accelerate properly, stuck in third gear.
When: Unclear from narratives; one incident while driving on highway, another while driving in city.
Symptoms owners cite: Anti-theft mode activates unexpectedly; Vehicle stuck in safety mode; Vehicle will not accelerate normally; Engine light and airbag lights illuminated; Key stuck in ignition until battery disconnected; Brake light warning while driving
Repairs/costs cited: OnStar operation can release anti-theft mode remotely. One dealership quoted $886 for anti-theft system repair. Another repair shop quoting over $2,500 for ABS/EBTM wiring; possible ABS pump replacement could add $1,000.
Recalls/TSBs owners mention: OnStar can remotely release anti-theft mode in some cases.
Axle/differential leaks and seal boot failures
Leaks from rear axle seals and boots early in ownership, sometimes within weeks. Owner of CTS-V reports differential fluid leaking from numerous points of the rear-end assembly across five service visits without resolution. Weak differential assembly unable to withstand vehicle power.
When: Early in ownership; one boot leak reported at ~1,500 miles; repairs attempted multiple times without lasting fix.
Symptoms owners cite: Rear end leaking differential fluid; Leak in back right seal boot; Fluid leaks from multiple points of rear-end assembly; Leaks recur after seal/gasket replacement
Codes mentioned: 07V589000
Repairs/costs cited: Seals and gaskets replaced multiple times (5 service visits in one CTS-V case) without permanent resolution. Owner notes differential unit is too weak for vehicle power.
Synthesized from 29 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 5 most recent
Car consumed so much oil that timing chain tensioners caused timing chains issues that caused car to stop running. *tr
2007 Cadillac cts. Consumer had a rebuilt transmission with rebuilt torque installed and would like to be reimbursed. *ss the consumer stated the vehicle had been jerking and hesitating, while driving. *jb
Driving approximately 65 MPH on i64 in virginia when gears locked up and lost all acceleration. Pulled off to the side and could smell a burning sensation, car then would not move. Back wheels locked up and when car attempted to be moved for a tow, entire back end rattled and grinded. Took vehicle to the dealer as it is still under warranty and has only 15k miles, dealer reported that it was an…
Cadillac 2007 cts - purchased july 14 2007, 14 miles on car - middle aug 07 1,500 miles bad evaporator coil replaced- end of oct 07 leak in back right seal boot - repaired by dealer - november 23rd complete differential failure at 15 miles per hour - we were on vacation in branson missouri, 4 hours from home - car towed to springfield, missouri to thompson's Cadillac - thompson Cadillac gave…
The seller lied about everything! The first question I asked was if the car was in an accident. He bragged about being a mechanic, and doing all the work on the car, so everything in the car is in, "tip top shape." he replied, "no, never!" he did not allow us to ride the car on the interstate before the purchase, claiming it was illegal. 10 mins after leaving the car lot, the car cuts off and is…
Had powertrain trouble with your 2007 Cadillac CTS?
File a complaint with NHTSA → It's free, official, and how every report above got here — owner filings are the federal safety record this page is built on.
Common questions
How serious is the powertrain problem on the 2007 Cadillac CTS?
It's a meaningful issue. 29 complaints have been filed and the failure mode causes operational problems for owners. Repairs average $2,500.
At what mileage does the powertrain typically fail?
Across the 15 complaints that reported odometer mileage, most powertrain failures cluster between 33,200 and 140,000 miles, with the median around 82,000. A quarter of owners report trouble before 33,200; a quarter make it past 140,000. Maintenance history matters more than the odometer alone — this is the reported failure window, not a guarantee.
What does it cost to fix?
Independent shops typically charge around $2,500 for powertrain repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to powertrain?
No active recalls currently cover powertrain issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Related
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Verify the raw federal record at
nhtsa.gov/vehicle/2007/Cadillac/CTS.
Severity ratings are derived from reported crashes, fires, injuries, and fatalities. Repair cost estimates are
independent-shop national averages and may differ in your area. Some links on this page are affiliate links.