Saturn Ion Transmission Problems & Cost | 4T45E | AW55-50SN

The Saturn Ion was equipped with the 4-speed 4T45E and the Aisin Warner AW55-50SN transmission. But they aren’t without their problems though, so let’s look at some of the most common Saturn Ion transmission problems, look at cost estimates and figure 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?

Saturn Ion Transmission Models

Saturn Iion: AW55-50SN Transmission
Saturn Iion: 4T45E Transmission

Saturn Ion 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 Saturn Ion Transmission Prices:

TransmissionStreet Smart TransmissionAutozoneAdvance Auto PartsDealer Retail
4T45E / 4T40E1811144014992644

What are the DTC codes related to Saturn Ion 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
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
P0748Pressure Control Solenoid 'A' Electrical
P0750Shift Solenoid 'A'
P0753Shift Solenoid 'A' Electrical
P0755Shift Solenoid 'B'
P0758Shift Solenoid 'B' Electrical
P0767Shift Solenoid 'D' Stuck On
P0850Park/Neutral Switch Input Circuit
P0897Transmission Fluid Deteriorated
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
P1860TCC PWM Solenoid Circuit Electrical
P1887Torque Converter Clutch Release Switch

Saturn Ion Transmission Recalls

None Found

Saturn Ion Technical Service Bulletins (TSB)

None Found

Common Problems with the Saturn Ion Transmission

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?

If your Saturn Ion can still make it up and down the road, you might say “It’s fine, I’ll just drive it until I can get it fixed”. But that is not always a good idea, depending on the symptoms. You see, there are a lot of (very expensive) moving parts inside of a transmission, and if something isn’t right, continuing to drive with a transmission problem could damage something else.

How often does a Saturn Ion transmission need to be replaced?

The overall lifespan of a Saturn Ion transmission largely depends on how well it was maintained. Factory design flaws also factor into this equation, along with how/how hard you drive. But on average, we’ve seen the Saturn Ion transmission last for between 130,000-180,000 miles. A high quality replacement transmission however, can last considerably longer if all of the factory design flaws have been addressed and the vehicle has been maintained.

How are Saturn Ion transmission issues diagnosed?

It is fairly easy to guesstimate what the root cause of your Saturn Ion transmission problems might be, but you won’t truly know unless you have the right tools and experience. A good mechanic or transmission repair center will be able to connect your truck to a computer and find out which diagnostic trouble codes (DTC’s) have been stored. Once they know what to look for, they can perform a visual inspection to verify the problem.

How is a Saturn Ion transmission replaced?

In order to replace your Saturn Ion transmission, the car has to be lifted from the ground in order to gain access to all of the parts that will need to be unbolted. Then the transmission can be removed.

Recommendations for Saturn Ion 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 Saturn Ion transmission here, then find a local shop using our Find a Shop guide to install it for you.

How to Solve Saturn Ion Transmission Problems

Solution A: Buy a Used Saturn Ion Transmission

The quickest way to fix your transmission problems is to simply buy a used transmission or used transmission. These can be found at most junk yards, and they often come with a 30-90 day warranty. However, there’s no way to determine the actual condition of the internal components, so you could be spending a bunch of money to have the exact same problems. Plus, that warranty only covers the transmission if it’s defective, not the labor costs that you’ll have to pay.

Solution B: Buy a Rebuilt Saturn Ion Transmission

Another option would be a rebuilt transmission or rebuilt transmission. A local repair shop will remove your transmission, then install a bunch of new parts during the rebuild. The problem here is, the skills and experience of each transmission rebuilder will vary widely from shop to shop, so you could have problems from something that wasn’t adjusted properly. And the 1-2 year warranty might only cover you at certain transmission repair shops, in a specific geographical area.

Solution C: Buy a Remanufactured Saturn Ion Transmission

Many owners depend on their vehicle to commute and get things done. Their gasoline engines are designed to go 100’s of thousands of miles, so it makes sense to invest in a remanufactured transmission.

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 Saturn Ion 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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Chad Madden
5 months ago

I have 07 saturn ion 2.2 I can pull generic code p0700 check freeze frame data it has code p0741 I can clear the codes drive anywhere from 9 to 15 miles before check engine light comes back on

Jordan L
9 months ago

Whenever I shift my 2006 saturn ion 3 coupe into reverse or drive I can feel and hear my car clunk, I refilled the transmission fluid and even replaced a motor mount and it was gone for a little bit but it’s back again, it’s not leaking anything at all I really don’t know what it could be.

Tyler
1 year ago

2007 Saturn ion automatic. When I reach 40 mph it shifts and drops rpm to 1500.. lugs til the engine catches up unless I press the gas pedal and make it downshift.

Janice Huck
2 years ago

I have a 2007 Saturn Ion. Ive had it going 4 months now. It will drive to 20 maybe 35,then just makes a accelerate noise. It looses speed and goes literally 10 mph. While the rpm is idling to 4 or 5. So I just parked it. Getting another transmission monday. Help? Is it that or a gear thing?

Angela s
2 years ago
Reply to  Janice Huck

Sounds like transmission. Had the same issue with my 2013 Nissan rogue and had to replace transmission

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