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Remanufactured Pontiac G6 Transmissions 

  • Learn about common Pontiac G6transmission problems 
  • Everything you need to know when shopping for a Pontiac G6transmission for sale 
  • How and when to buy a remanufactured Pontiac G6transmission 

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Remanufactured Pontiac G6 Transmissions 


The Pontiac G6 debuted for the 2005 model year, amid great fanfare on the Oprah Winfrey Show. During her 2004 season premiere, Oprah uttered the famous line you get a car, and you get a car!!…Giving away free cars was a great PR success for General Motors Pontiac Division. However G6 transmission problems with the 4T45E, 4T65E or 6T70 can leave owners feeling less than excited. So let’s find out if installing a remanufactured Pontiac G6 transmission can make you smile again. 


Common Pontiac G6 4T45E Transmission Problems  


Owners can suffer frotransmission problems including slipping, delayed shifts, harsh shifts, no reverse, no forward gears, loss of 4th gear, and the loss of overdrive. These issues can stem from numerous design flaws with the solenoids, a Torque Convertor Control (TCC) element, or other vital components. 


Common Pontiac G6 4T65 Transmission Problems  


Erratic Shifting / Loss of Forward Gears: If youre experiencing 4T65E transmission problems like slipping, erratic shifting, or failed gear engagement, the causes could range from a failed 4T65E solenoid / 4T65E-HD solenoid, to a 4T65E torque convertor issue. 

Another common problem is overheating. This happens when the moving parts inside the transmission are creating more friction heat than the ATF can remove. The most common cause of this condition is towing heavy loads, driving in stop/go traffic, or on mountain roads where the transmission has to shift a lot. 

Loss of 4th Gear and/or Reverse: Another common problem is an inoperable fourth or reverse gear. These issues are often caused by design flaws in the Reverse Boost Valve, channel plate, and stripped splines on the 4th gear clutch hub shaft. 


Common Pontiac G6 6T70 Transmission Problems  


One of the most common 6T70 transmission problems is overheating. This happens when the moving parts inside the transmission are creating more friction heat than the ATF can remove. The most common cause of this condition is towing heavy loads, driving in stop/go traffic, or on mountain roads where the transmission has to shift a lot. 

Overfilling the transmission with too much ATF can also cause 6T70 transmission overheating, which can lead to ruptured seals, and damaged torque converters, valve bodies, bands, and clutches. An auxiliary transmission cooler can do a lot to help keep the temperature down. 

Another common issue with the GM 6T70 transmission is broken wave plates. These metal disks help to lock gears together during a shift. If they break, the metal fragments will get hurled through the gearbox, causing catastrophic damage to other internal components. There isnt a lot that you can do to prevent this problem, but a remanufactured 6T70 transmission can ensure that it wont happen again. 

You can also cause the transmission to overheat with improper maintenance or abuse. The main things you need to watch out for are overtowing and revving too much. These cause the transmission to rev too high and strip gears or use too much transmission fluid. The best thing to do, if you think the transmission is overheating, is to pull to the side of the road and let the vehicle cool down. 

When a gear change is required, the computer tells a little spring-loaded plunger in the valve body to move and direct pressurized ATF into the appropriate channel. Theres one of these solenoids for each gear, and its activated by sending current through the coil of wire thats wrapped around it. The problem is, that coil of wire can short out, or excessive vibration can shake it loose, causing the 6T70 solenoid to fail. 


How to Solve Pontiac G6 Transmission Problems 


Solution A: Buy a Used Pontiac G6 Transmission 

Going to the local junkyard and picking up a used Pontiac G6 transmission might seem like the cheapest and fastest option. But you need to consider the fact that you don’t know what the actual shape of the internal components are. It could very well be on the verge of transmission problems of its own, which would leave you in the exact same predicament that you’re in now. And that 30 – 90 day junkyard warranty probably won’t cover labor charges to install the replacement transmission if something goes wrong. 


Solution B: Buy a Rebuilt Pontiac G6 Transmission  

Getting a rebuilt Pontiac G6 transmission would probably seem like a better idea. However, a lot of mechanics and transmission shops will only rebuild your Pontiac G6 transmission back to its original factory specifications. Which means that all of those factory design flaws are still going to be inplay. And that rebuilt transmission warranty might only be good at certain shops, which could do you no good if you have transmission problems while you’re traveling. 


Solution C: Buy a Remanufactured Pontiac G6 Transmission  

If you want to get the most service life out of your vehicle as possible, then you really should consider a remanufactured Pontiac G6 transmission from Street Smart Transmission. Each one is completely disassembled and re-remanufactured, so nothing is left to chance. Theyre also modified to correct the factory design flaws, which will greatly extend the service life. Plus, you get a 3-Year/Unlimited Mile Nationwide Warranty. This will cover parts and labor charges at any licensed repair shop in the Continental United States, giving you a lot more flexibility and coverage.