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2008 Cadillac CTS problems

The most common problem on the 2008 Cadillac CTS is electrical system, typically around 74,000 miles. It has 1.7 times the complaints of a typical CTS model year.

Typical year1.7x the typical complaints
Year score
55/100
Owner complaints
175
Recalls
2
Service bulletins
1,139
Worst area
Electrical
Fuel economy
19-21mpg

The worst 2008 Cadillac CTS problems

Ranked by number of owner complaints. Mileage and cost come from what owners wrote.

Problems by type

Tap a problem to see which part fails, at what mileage and in which other years.

Specific symptoms reported on the 2008 Cadillac CTS

Door locks 15Check engine light 14Stalling 11Fuel pump 9Won't start 8Grinding brakes 7Fuel smell 7Headlights 7Water leak 7Airbag light 6

Recalls 2

Electrical system: ignitionReported July 2, 2014 · 554,328 vehicles affected
What is wrong
This defect can affect the safe operation of the airbag system. Until this recall is performed, customers should remove all items from their key rings, leaving only the ignition key. The key fob (if applicable), should also be removed from the key ring. General Motors LLC (GM) notified the agency on July 2, 2014 that they are recalling 554,328 model year 2003-2014 Cadillac CTS vehicles manufactured August 16, 2001, to April 28, 2014, and 2004-2006 Cadillac SRX vehicles manufactured March 20, 2003, to August 11, 2006. In these models, the weight on the key ring and/or road conditions or some other jarring event may cause the ignition switch to move out of the run position, turning off the engine.
Risk
If the key is not in the run position, the air bags may not deploy if the vehicle is involved in a crash, increasing the risk of injury.
Remedy
GM will notify owners, and dealers will install two key rings and an insert in the key slot or a cover over the key head on all ignition keys, free of charge. The recall began on September 15, 2014. Owners may contact Cadillac customer service at 1‑800‑458‑8006. GM's number for this recall is 14172.

Recall number 14V394000 · Recall details

Electrical systemReported June 4, 2010 · 1,365,070 vehicles affected
What is wrong
Gm is recalling certain model year 2006-2009 buick, lucerne; cadillac dts; hummer h2; model year 2008-2009 buick enclave; cadillac cts; model year 2007-2009 cadillac escalade, escalade esv, escalade ext; chevrolet avalanche, silverado, suburban, tahoe; gmc acadia, sierra, yukon, yukon xl; saturn outlook; and model year 2009 chevrolet traverse vehicles equipped with a heated washer fluid system (hwfs). A recall was implemented in 2008 to add a fuse to the control circuit harness to address the potential consequences of a printed circuit board (pcb) electrical short. However, there have been new reports of thermal incidents on hwfs modules after this improvement was installed. These incidents resulted from a new failure mode attributed to the device's thermal protection feature. The significance varies from minor distortion to considerable melting of the plastic around the hwfs fluid chamber.
Risk
It is possible for the heated washer module to ignite and a fire may occur.
Remedy
Dealers will permanently disable and remove the heated washer fluid module. An updated page for the owner manual will be provided and inserted in the owner manual to document that the feature has been permanently disabled and removed from the vehicle. The safety recall began on june 11, 2010. Owners may contact buick at 1‑866‑608‑8080, cadillac at 1‑866‑982‑2339, chevrolet at 1‑800‑630‑2438, saturn at 1‑800‑972‑8876, gmc at 1‑866‑996‑9463 and hummer at 1‑800‑732‑5493 or at the owner center at www.gmownercenter.com.

Recall number 10V240000 · Recall details

See all 2 recalls for the 2008 Cadillac CTS

Technical service bulletins for the 2008 Cadillac CTS 1,139

Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.

See all 1,139 bulletins for the 2008 Cadillac CTS

2008 Cadillac CTS crash test ratings

Government 5-star crash tests. Higher is safer. Each row is a body style and drivetrain that was tested.

VersionOverallFrontalSideRollover
Cadillac CTS 4-DR. w/SABPhrases found in the owners' own descriptions, so one complaint can mention several symptoms.Phrases found in the owners' own descriptions, so one complaint can mention several symptoms.Phrases found in the owners' own descriptions, so one complaint can mention several symptoms.4

2008 Cadillac CTS fuel economy

Official EPA estimates in miles per gallon (MPGe for electric). Ranges cover trims that share the same engine.

EngineDriveCityHighwayCombined
3.6L 6‑cylRWD16-1825-2619-21
3.6L 6‑cyl4WD1725-2620

What 2008 Cadillac CTS owners say

Most recent owner complaints, unedited.

Filed Jun 4, 2026 · Airbags · DE

Me and my husband were visiting my brother in Vienna, Maryland and we were packing up to leave to go visit my mom and the surrounding area where we live and then go home. After my husband got everything in the car as well as the kids and my dog we were both getting in the car he had gotten in prior to me and shut the door and all of the SRS airbags went off while the car was in park. There were no warning messages on the dashboard. There is no damage to the outside of the car. I had put my claim through my insurance company, and they deemed it mechanical failure.

Filed Jun 28, 2025 · VA

I haven't had a problem with my car and my truck. But my main concern is the LED and laser headlights almost every new car and truck that comes equipped with them. Even the aftermarket replacement bulbs and light assemblies, they are way too bright at night. Blindly bright. I have to put my hand in front of my eyes and face to reduce the amount of glare. I feel like these headlights can be a safety hazard to drivers at night.

Filed May 29, 2025 · Electrical · OH

The recall performed on this vehicle were not performed. They played a [XXX] man made him get aThe recall performed on this vehicle we’re not performed. They played a [XXX] man made him get a timing chain for Morris Cadillac. I have several receipts from the vehicle being serviced because of the faulty windshield washer heater system that was supposed to be disabled caused an electrical short in the vehicle because it was not properly sealed water got in the wires and caused the computer to be fried this happened before the car still only has 67,000 miles and they won’t even take it in. The car stopped in the middle of the road almost killing everybody. I’ve had several technicians explain that it’s because of the faulty. Recall that they did not fix that is still exposed. Maybe they had a worker that was fired in 2017. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Jan 28, 2025 · Electrical, Engine · OH · fire

Vehicle Purchase Statement – Top Tier Auto I, [XXX] , purchased a vehicle from Top Tier Auto on [XXX]. The vehicle details are as follows: VIN: [XXX] Warranty: 30-day coverage for the transmission and engine After owning the vehicle for only 15 minutes, I entered the freeway, and the car began to shake violently. Shortly after, a gentleman driving behind me alerted me that sparks and fire were falling from beneath the car. I immediately pulled over, just before the engine burst into flames. The Columbus Police Department responded to the scene and had to extinguish the fire. This incident occurred within minutes of purchasing the vehicle, despite the supposed 30-day warranty covering the transmission and engine. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Aug 22, 2024 · Airbags · FL · crash · 2 injuries

Airbags did not deploy in a massive front end collision. That failure caused me physical injury which possibly would not have occurred had the airbags deployed. I don’t know how many 2008 Cadillac CTS are on the road at this time but feel it is an important enough matter that should be investígated. This was never recalled. Thank you, [XXX] , [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Feb 25, 2024 · Acceleration, Electrical · CA

Ever since I purchased this 2008 CTS vehicle, I have dumped thousands of dollars to repair the vehicle even after the "recall repairs". Problems persist and the car has become more dangerous than ever. The vehicle had inspected by the dealership a number of times the first 5 years of ownership the first 3, listed below, were the replaced recalls from dealership, the rest are known safety issues that gm denies to admit to faults and recalls. *Ignition starter replacement (still have starter failure issues after 2 repairs from gm) *washer fluid warmer removal (they just snipped the wires and removed the component but left hot wires exposed in vehicle) *motherboard ecm replacement recall(ecm is still faulty and has caused dozens of electrical issues. **************** battery drains over night. On my 6th battery (just bought new one 3 days ago) gauge cluster never recalibrated and is completely disabled. Don't know how fast im going how much gas or any other info related to. sunroof constantly leaking, flooding vehicle and destroying the electrical components which fried many relays including the door lock and power window components vehicle refuses to turn but cranks on fuel often will not allow a fill up ecm throwing irrelevant codes headlight failure due to seal defect that allows moisture into headlight casing frequent oil loss. 2018: vehicle engine failure whilst driving on freeway with zero warning nearly causing a fatal crash. Purchased new alternator (Shade tree auto in san Clemente) and had to pay 2000 for tow and alternator transmission failure and near miss collision into another vehicle on a steep incline road I have taken this vehicle to a multitude of repair shops and auto supply to get a diagnosis. Even the dealership didn't have any answers. Now I am out of a car. and money. These issues had been confirmed by Rorick Cadillac, Shade tree auto, oreily, s and s auto, auto zone.

Filed Sep 7, 2023 · Steering, Transmission · CO

I was driving down the road going Bout 29 miles per hour when I heard a big boom. It sounded ND felt like I had hit something . So I slowed down and pulled over to the side of the road put the car in park looked underneath nothing was there . I then preceeded to my at. Which thank God was only another block away .I started going only going maybe 5 miles per hour at this point because it sounds like I'm dragging like metals on the ground . When I got to my apt. I went to park the car when I went to put it into park it would not go when I went to reverse it would nit go it still went into drive and thTs it and even getting it into driveyou really had to push it and it felt like the tires were going to wobble off , I mean bye this time it just felt like the car was gonna fall apart shaking abd wobbling all over because I kept trying g to go from drive to neutral to get it to go into park but it didn't budge I had to leave it in neutral and put on the emergency break and shut the car off leaving my key I side cause it wS stuck due to the car not going into park. When I came out of my apt. I wS just frazzled I didn't understand whT wS going on she hD been running beautifully. But I did remember when I first test drove her I had told the sales man she had felt like I wS pulling something she wS kinda hesitant to excelerate . He assured me she's had a 5 star inspection and the whole cars under warranty ND he works on cadillacs himself . Yada Yada Yada. I had called. Friend to come help me tow her home . He tried to get her to manually go into drive but it still wouldn't budge he thought maybe the shift link u til we got her home it was the drive shaft it had sheered off all the bolt one half was on the one part the other part of the bolt were broke off where it connected to the tyranny. He said you can't replace this with out trying to back our the bolts but there metric bolts and would be hard to find . And I would just be better off with a new driveshaft.

Filed Jul 18, 2023 · Electrical, Engine · CA

Car went crazy one day while behind the wheel everything malfunctioned then car shut off and won't start again. I could of easily got into an accident had there been any other vehicles around. Kids were scared. Codes come up as U0100,U0140,U0101,C0242,B0081-0F,B0081-71,B1370-01,B1370-06,U0155-00,U0170-00,P0856-00.

Filed Feb 15, 2023 · Brakes, Electrical · IL

I was pulled over by the Police because my 2008 Cadillac CTS license plate lights were not working and my rear brake lights were not working. These light failures were caused by a known design flaw with the wiring harness in the trunk lid near the right trunk lid hinge in where the wires inside the harness that go to the brake lights break in half after repeated opening and closing of the trunk lid because of the poor design of the wiring harness and it’s mounting brackets. There should have been a safety recall from GM as I could have been killed if a car in back of me did not stop because my brake lights were not going on when I would step on my cars brake peddle! Now the car dealership service center wants to charge me $335.00 to replace the broken wires that were caused by GM/Cadillac’s poor and unsafe design of this wiring harness. Regards [XXX] INFORMATION Redacted PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).

Filed Sep 27, 2022 · Fuel system · 34,000 miles · NE

The contact owns a 2008 Cadillac CTS. The contact stated that while starting the vehicle, he noticed there was a puddle of fuel on the ground coming from the passenger's side fuel line. The vehicle was taken to the dealer where it was diagnosed with corrosion on the fuel line causing the fuel leak. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 34,000.

Used buying checklistWhat to check on a 2008 Cadillac CTS before you buy

Compare the 2008 Cadillac CTS

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Other model years

20032004200520062007200820092010201120122013201420152016201720182019

Questions about the 2008 Cadillac CTS

Is the 2008 Cadillac CTS reliable?

Owners have filed 175 complaints about the 2008 Cadillac CTS, 1.7 times a typical CTS model year.

What is the 2008 Cadillac CTS year score?

The 2008 Cadillac CTS scores 55 out of 100 (below average). The score compares it with the other model years of the Cadillac CTS: 75 is a typical year, 50 means twice the usual complaints, and serious complaints and recalls lower it.

What is the most common problem with the 2008 Cadillac CTS?

Electrical system, with 39 complaints, typically around 74,000 miles. Next is engine (29).

How many recalls does the 2008 Cadillac CTS have?

2 recalls, covering electrical system.

Is the 2008 Cadillac CTS safe in a crash?

The 2008 Cadillac CTS was crash tested, but no overall score was published. Partial scores: rollover 4 out of 5.

Was there a recall on the 2008 Cadillac CTS electrical?

Yes, 2 recalls: 14V394000, 10V240000. Check your VIN to see if your car still needs the free repair.

What year does the Cadillac CTS have the most electrical problems?

The Cadillac CTS model years with the most electrical complaints are 2003 (56 complaints), 2006 (43 complaints) and 2007 (41 complaints).

What gas mileage does the 2008 Cadillac CTS get?

Official estimates for the 2008 Cadillac CTS range from 19 to 21 mpg combined. The most efficient version (3.6L 6-cyl, RWD) gets 16-18 city and 25-26 highway.

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