Cadillac CTS Transmission Problems & Cost | 5L40E

Introduced for the 2003 model year, the Cadillac CTS was the very first car to wear the now famous “Art & Science” design language. Over the years, a number of engines and manual transmissions have been offered. The available automatic transmissions include the 5-speed, 6-speed and 8-speed gearboxes listed below. Although Cadillac CTS transmission problems don’t happen often, they can still occur. Some let’s find out what you can do about them.

Need a replacement transmission? Get an estimate for replacement transmissions and local installation. Look up your transmission model by vehicle make and model.

What Transmission Do I Have?

Cadillac CTS Transmission Models

Cadillac CTS: 5L40E Transmission
Cadillac CTS: 6L45E Transmission
Cadillac CTS: 6L50E Transmission
Cadillac CTS: 6L90E Transmission
Cadillac CTS: 8L45E Transmission.
Cadillac CTS: Aisin TL-80SN Transmission

Cadillac CTS Transmission Replacement Cost Estimate

Pricing varies by model. To be 100% sure on pricing, have your VIN# handy and use our Get An Estimate feature to look up your transmission by VIN#.

Replacement Cadillac CTS Transmission Prices:

TransmissionStreet Smart TransmissionAutozoneAdvance Auto PartsDealer Retail
5L40E (Exc. BMW)2122214521993618

What are the DTC codes related to Cadillac CTS transmission problems?

Trouble CodeDescription
P0711Transmission Fluid Temperature Sensor Circuit Range/Performance
P0712Transmission Fluid Temperature Sensor Circuit Low Input
P0713Transmission Fluid Temperature Sensor Circuit High Input
P0714Transmission Fluid Temperature Sensor Circuit Intermittent P0715
P0715Input/Turbine Speed Sensor Circuit
P0716Input/Turbine Speed Sensor Circuit Range/Performance 
P0717Input/Turbine Speed Sensor Circuit No Signal
P0718Input/Turbine Speed Sensor Circuit Intermittent
P0720Output Speed Sensor Circuit
P0721Output Speed Sensor Circuit Range/Performance
P0722Output Speed Sensor Circuit No Signal
P0723Output Speed Sensor Circuit Intermittent
P0729Gear 6 Incorrect Ratio
P0730Incorrect Gear Ratio
P0731Gear 1 Incorrect Ratio
P0732Gear 2 Incorrect Ratio
P0734Gear 4 Incorrect Ratio
P0735Gear 5 Incorrect Ratio
P0740Torque Converter Clutch Circuit Malfunction
P0741Torque Converter Clutch Circuit
P0742Torque Converter Clutch Circuit Stuck On
P0744Torque Converter Clutch Circuit Intermittent
P0746Pressure Control Solenoid 'A' Performance or Stuck Off
P0747Pressure Control Solenoid 'A' Stuck On
P0748Pressure Control Solenoid 'A' Electrical
P0750Shift Solenoid 'A'
P0751Shift Solenoid 'A' Performance or Stuck Off
P0752Shift Solenoid 'A' Stuck On
P0753Shift Solenoid 'A' Electrical
P0755Shift Solenoid 'B'
P0756Shift Solenoid 'B' Performance or Stuck Off
P0757Shift Solenoid 'B' Stuck On
P0758Shift Solenoid 'B' Electrical
P0767Shift Solenoid 'D' Stuck On
P0776Pressure Control Solenoid 'B' Performance or Stuck Off
P0777Pressure Control Solenoid 'B' Stuck On
P0796Pressure Control Solenoid 'C' Performance or Stuck off
P0797Pressure Control Solenoid 'C' Stuck On
P0826Up and Down Shift Switch Circuit
P0850Park/Neutral Switch Input Circuit
P0851Park/Neutral Switch Input Circuit Low
P0897Transmission Fluid Deteriorated
P0960Pressure Control Solenoid “A” Control Circuit/Open
P0962Pressure Control Solenoid “A” Control Circuit Low
P0963Pressure Control Solenoid “A” Control Circuit High
P0964Pressure Control Solenoid “B” Control Circuit/Open
P0965Pressure Control Solenoid “B” Control Circuit Range/Performance
P0966Pressure Control Solenoid “B” Control Circuit Low
P0967Pressure Control Solenoid “B” Control Circuit High
P0970Pressure Control Solenoid “C” Control Circuit Low
P0971Pressure Control Solenoid “C” Control Circuit High
P0973Shift Solenoid “A” Control Circuit Low
P0976Shift Solenoid “B” Control Circuit Low
P0977Shift Solenoid “B” Control Circuit High
P0979Shift Solenoid “C” Control Circuit Low
P0980Shift Solenoid “C” Control Circuit High
P0982Shift Solenoid “D” Control Circuit Low
P0983Shift Solenoid “D” Control Circuit High
P0984Shift Solenoid “E” Control Circuit Range/Performance
P2715Pressure Control Solenoid ‘D’ Stuck On
P2723Pressure Control Solenoid ‘E’ Stuck Off

Cadillac CTS Transmission Recalls

None Found

Cadillac CTS Technical Service Bulletins (TSB)

TSB 02-07-30-026 – Transmission shudder during hard acceleration – Cadillac CTS 5L40E

Problem – During hard acceleration, it is not uncommon for the transmission to shudder/shake after launch. This is caused by insufficient clearance between the driveshaft attaching bolts and the transmission output shaft flange.
Solution – Install a revised transmission output shaft flange.

TSB 07-07-30-032B – Ignition key sticks, shifter binds, “shift to park” message displayed, dead battery – 5L40 Transmission | 5L50 Transmission | 6L50 Transmission | 6L80 Transmission
2007 – 2008 Cadillac SRX – 2007 – 2008 Cadillac STS – 2007 – 2008 Cadillac STS-V – 2008 Cadillac CTS
Problem – Owners may notice that the shifter seems to bind when shifting into gear or park. The ignition key may stick or be difficult to remove (SRX only). A “shift to park” message may be constantly displayed in the driver information display screen, resulting in a dead battery.
Solution – These transmission problems may be caused by out of adjustment shift linkage, a slow Brake Transmission Shift Interlock mechanism, or a Park Confirmation microswitch that is not closed.

TSB 07-07-30-032B – Ignition key sticks, shifter binds, “shift to park” message displayed, dead battery – 5L40 Transmission | 5L50 Transmission | 6L50 Transmission | 6L80 Transmission
2007 – 2008 Cadillac SRX – 2007 – 2008 Cadillac STS – 2007 – 2008 Cadillac STS-V – 2008 Cadillac CTS
Problem – Owners may notice that the shifter seems to bind when shifting into gear or park. The ignition key may stick or be difficult to remove (SRX only). A “shift to park” message may be constantly displayed in the driver information display screen, resulting in a dead battery.
Solution – These transmission problems may be caused by out of adjustment shift linkage, a slow Brake Transmission Shift Interlock mechanism, or a Park Confirmation microswitch that is not closed.

TSB 07-07-30-032B – Ignition key sticks, shifter binds, “shift to park” message displayed, dead battery – 5L40 Transmission | 5L50 Transmission | 6L50 Transmission | 6L80 Transmission
2007 – 2008 Cadillac SRX – 2007 – 2008 Cadillac STS – 2007 – 2008 Cadillac STS-V – 2008 Cadillac CTS
Problem – Owners may notice that the shifter seems to bind when shifting into gear or park. The ignition key may stick or be difficult to remove (SRX only). A “shift to park” message may be constantly displayed in the driver information display screen, resulting in a dead battery.
Solution – These transmission problems may be caused by out of adjustment shift linkage, a slow Brake Transmission Shift Interlock mechanism, or a Park Confirmation microswitch that is not closed.

TSB PI488C – No forward or reverse and/or slipping – 6L80 Transmission | 6L90 Transmission
2010 – 2014 Cadillac CTS-V – 2010 – 2014 Cadillac Escalade (all models) – 2010 – 2013 Chevrolet Avalanche – 2010 – 2014 Chevrolet Camaro – 2010 – 2014 Chevrolet Corvette – 2010 – 2014 Chevrolet Express – 2010 – 2014 Chevrolet Silverado – 2010 – 2014 Chevrolet Suburban – 2010 – 2014 Chevrolet Tahoe – 2011 – 2014 Chevrolet Caprice PPV – 2014 Chevrolet SS – 2010 – 2014 GMC Savanna – 2010 – 2014 GMC Sierra – 2010 – 2014 GMC Yukon – 2010 – 2014 GMC Yukon XL – 2010 – 2014 GMC Yukon Denali
Problem – Trucks equipped with the 6-speed 6L80 or 6L90 transmission may experience no forward or reverse engagement, or slipping between the gears.
Solution – This problem could be caused by a cracked or split transmission filter. If this is the case, the transmission pump should be disassembled and inspected for possible damage. Inspect for any of the following conditions: – scored pump rotor or pump vanes – scored pump cover or pump rotor pocket – cracked pump slide.

The transmission should also be evaluated for any possible distress to the clutches. GM’s testing and analysis found that split or damaged filters may be caused by a damaged transmission pump. This can send a high pressure fluid spike down the filter neck on a cold start, resulting in the filter body cracking or the filter seam splitting. The filter is not defective and this is not a filter quality issue. Important: Do not replace the filter without inspecting the pump. Failure to inspect the pump and clutches could lead to a repeat of this condition.

TSB 09-07-30-004J – Slips in Reverse or Third, Delayed Reverse or Drive Engagement, DTC P0776, P2715, P2723, Harsh 2-3 Shifts – 6L80 Transmission | 6L90 Transmission
2006-2009 Cadillac STS-V – 2006-2009 Cadillac XLR – 2006-2009 Cadillac XLR-V – 2007-2008 Cadillac Escalade, Escalade ESV, Escalade EXT – 2006-2009 Chevrolet Corvette – 2007-2008 Chevrolet Silverado – 2008 Chevrolet Suburban – 2007-2008 GMC Sierra – 2007-2008 GMC Sierra Denali – 2007-2008 GMC Yukon Denali – 2007-2008 GMC Yukon XL Denali – 2008 GMC Yukon XL – 2008-2009 HUMMER H2 – 2008-2009 Pontiac G8
Problem – Vehicles equipped with the 6L80 or 6L90 transmission may slip when Reverse is selected or have no/delayed reverse engagement, harsh shifts from 2-3 / 4-5 or slips while in fifth, and slipping acceleration when passing. Possible DTCs include P0776, P2715 or P2723.
Solution – This transmission problem may be caused by a cracked 1-2-3-4 / 3-5-R clutch housing.

PIP5437B – Harsh shifts – 8L45 Transmission | 8L90 Transmission
2016 – 2017 Cadillac ATS – 2016 – 2017 Cadillac CT5 – 2016 – 2017 Cadillac CT6 – 2015 – 2017 Cadillac Escalade – 2016 – 2017 Chevrolet Camaro – 2017 Chevrolet Colorado – 2015 – 2017 Chevrolet Corvette – 2017 Chevrolet Express – 2015 – 2017 Chevrolet Silverado – 2017 GMC Canyon – 2017 GMC Savana – 2015 – 2017 GMC Sierra – 2015 – 2017 GMC Yukon Denali
Problem – One of the more common 8L transmission problems is excessively hard or abrupt gear changes.
Solution – The TCM may need to be recalibrated with the latest control software. It could also be caused by one or more of the clutch fill times not being learned by the TCM. In which case, the Service Fast Learn (SFL) procedure will have to be performed. Should the problems persist, the valve body will need to be replaced.

Common Problems with the Cadillac CTS Transmission

No forward or reverse engagement with grinding noise on initial start-up – Cadillac CTS 6L45 / Cadillac CTS 6L50

Problem – All wheel drive equipped cars with transfer case model BW44-77, can experience a grinding noise and no forward or reverse gear engagement on initial take off. This is caused by rust damage to the transmission output shaft and transfer case input shaft, due to a lack of lubrication.
Solution – Install new transfer case input shaft and updated transmission output shaft, which has a special O-ring to trap lubricant in the splined area.

Solenoid DTC’s – Cadillac CTS 6L90

Problem – A number of diagnostic trouble codes, including P0776, P0796, P2714 and P2723, can be caused by a pressure leak at the end of the clutch regulating valve.
Solution – The bore plug will have to be replaced with updated versions, or modified to accept an O-ring kit.

Lack of Response
Leaking Fluid
Low Fluid
Burning Smell
Grinding or Shaking
Whining, Clunking or Humming
Refuses to Go Into Gear
Torque Converter Issues
Valve Body Issues
Transmission Noisy in Neutral
Gears Slipping
No 3rd or 4th Gear
No 1st or 2nd Gear
No Reverse
Dragging Clutch
Trouble Codes / Check Engine Light

Can I drive with a transmission problem?

Cadillac CTS transmission problems often start out small, and don’t normally affect drivability. However, if you ignore a transmission issue, no matter how small, it can easily grow into a much more expensive problem that could completely debilitate the vehicle.

How often does a Cadillac CTS transmission need to be replaced?

If properly maintained, a Cadillac CTS transmission can last for between 130,000-180,000 miles. However if you ever have to replace it, a good quality remanufactured transmission can last for considerably longer if all of the factory design flaws are corrected.

How are Cadillac CTS transmission issues diagnosed?

The first step in diagnosing Cadillac CTS transmission problems is to connect a diagnostic computer to the car’s OBDII port. This will allow the technician to read all of the stored error codes, which will help to narrow down the problem. After that, a visual inspection can be performed to verify the diagnosis.

How is a Cadillac CTS transmission replaced?

After disconnecting the electrical components, the CTS transmission can be unbolted from the driveshaft and the engine. After the new gearbox is installed, the ECU / PCM will have to be reprogrammed / reflashed to accept the new transmission.

Recommendations for Cadillac CTS transmission issues?

To save time and get back on the road faster, have your 17-digit truck VIN# handy and you can get an online quote for a reman Cadillac CTS transmission here, then find a local shop using our Find a Shop guide to install it for you.

How to Solve Cadillac CTS Transmission Problems

Solution A: Buy a Used Cadillac CTS Transmission

Perhaps the quickest way to solve all of your Cadillac CTS transmission problems would be to simply go down to the local salvage yard and pick up a used 5L40E / used 6L45 / used 6L50 / used 6L90 / used 8L45 / used Aisin TL-80SN. There are relatively inexpensive, and most of all come with a 30-90 day warranty. But the issue here however, is that you don’t know the actual condition of the internal parts. And if any of them are worn out and give you trouble, that junkyard warranty may not cover the labor charges to install another transmission.

Solution B: Buy a Rebuilt Cadillac CTS Transmission

Another solution would be to get a rebuilt 5L40E / rebuilt 6L45 / rebuilt 6L50 / rebuilt 6L90 / rebuilt 8L45 / rebuilt Aisin TL-80SN. To do this, a mechanic will typically take your existing gearbox and install a number of factory spec Cadillac CTS transmission parts. However, taking the transmission back to its original form means that all of the problems associated with the factory design flaws will eventually return. And the warranty that they gave you, might only be honored at that shop.

Solution C: Buy a Remanufactured Cadillac CTS Transmission

If you want to find a permanent, long-lasting solution to all of your Cadillac CTS transmission problems, then a remanufactured 5L40E / remanufactured 6L45 / remanufactured 6L50 / remanufactured 6L90 / remanufactured 8L45 / remanufactured Aisin TL-80SN might be your best option. Many of these have been upgraded to fix common problems with the transmission design, so they may last longer than the original. Plus, you may also be able to get a nationwide warranty that will cover you if you travel.

Need a replacement transmission? Get an estimate for replacement transmissions and local installation. Look up your transmission model by vehicle make and model.

What Transmission Do I Have?

What Problem Does Your Cadillac CTS Have?

Let us know the year, mileage and problem you’re having as well as any trouble (OBD) codes you’ve found. If you’ve been given a quote or paid for a repair, we’d like to hear about that too!

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George
18 days ago

Cruising about 50mph rpms jump from 1000-2300. Put the shifter in neutral and back to drive and the problem stops

TRIZLORD
2 months ago

Will not shift into any gear only reverse barely and it will not function at all

David Harville
2 months ago

I have a 2003 CTS with about 132,000 miles on it and the transmission won’t engage in any gears and there was milky fluid in the radiator and the two codes that came up were p0700 p0741. Any help would be great thanks.

Anthony Ambrosio
3 months ago

Grinding noise.
higher speed( 50-55mph), higher frequency.

Anthony Ambrosio
4 months ago

14! CTS Transmission noise(sounds like bad bearing ) while driving. Becomes whine at 50mph.

Anthony Ambrosio
3 months ago

Thanks, will visit dealer.

Ron
4 months ago

Went into a no drive state at freeway speeds would not move but after cooling would move short distance

Dan Brady
5 months ago

I have a 2011 Cadillac CTS4 with the 3.6 v6 it only has 35,000 miles on it the problem started out with the feel of something being out of balance or bad bearings I replace the bearings thought about replacing suspension components but then I started to get a shutter when taking off from a light and reduced power at the same time I have no check engine lights no codes not even passive codes I have a launch 429C I was trying to find a way to reset the TCM because the problem got much worse when I manually shifted it after that all went to hell but still no trouble codes I am very perplexed and worried I love this car but this sounds expensive.

Jeffrey Smith
10 months ago

Sometimes harsh shift into low a nsecond. When slowing to mane a sharp turn the transmission goes into neutral and then slams into first.

mike billings
10 months ago

Disable the theft system ,problems

Christie
1 year ago

I just bought a 2007 CTS amd drove it home 45 miles. The check engine light was not on when i test drove it but when i picked it up and got into it i saw it was on. After making it home i went to auto zone and had it checked and got codes P0008 and P0014. I went thru car wash then right after all the sudden the car started stallinf like it wasnt going to move. I turned it off and back on then it allowed me to make it to my parents. Now after that, the car will not go into gear. Sometimes it will reverse for just a second or move forward for just a second but then stop and roms begin to tise. I noticed that the transmission cooler line is also disconnected too. I had it checked at a mechanics and was told i need new timing chain and new transmission. Im not sure if they are correcr about the transmission or not. Im also not getting any obd codes on transmission at all. Plz help!!

Ralph
2 years ago

Car bangs when putting it in drive

MikeN
2 years ago

I have a 2008 cadillac CTS with 145,000 miles. Transmission began slipping a few months ago. Changed the fluid and initially the slipping was almost gone except occasionally around 70 mph there was a slight lurch. Now it is getting worse especially driving on hilly roads. No check engine or other warnings lights are on.

Importer 14
2 years ago

2007 cts I have no reverse lights. I replaced fuse and traced the light green wire to the fuse box. I know bulbs are fine. I checked continuity everything is fine. I used a hot wire and the bulb sockets are fine. My transmission is auto so there is no neutral safety switch. I ‘m at a loss at this point.

Duggan Snipes
3 years ago

Have a 2010 Cadllac CTS with only 72,000 miles,transmission gone.It is going to cost 4,395.00

Fred Hamilton
2 years ago
Reply to  Duggan Snipes

yep, same except I have 150,000 mi.

Tonya Miles
3 years ago

I have a 2003 Cadillac CTS 90,000 miles. When you put it in Reverse it goes to gear then it delays for second then goes in goes back into reverse. It’s the only gear it does in. If you could give me advance as to how fix this problem I would greatly appreciate it. Thank you for your time!

James
3 years ago

No reverse

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