![]() ![]() This affects shift firmness, whether it even shifts at all, and can make the transmission slip without enough pressure. Your G6’s transmission uses solenoids to control the amount of pressure going through the transmission. When this happens, shifts will get rougher. Over time, the gears in a transmission can just wear out. Most of the time they’ll just need replaced. When these bands go bad the transmission will begin to slip. If it wasn’t, you’ll need to flush it and start over.Īn automatic transmission uses bands to link its gears together. If you’ve recently serviced (or had serviced) your transmission, double check that the right fluid was put in. Black fluid is an obvious sign that the fluid has been burnt. This transmission fluid color chart will help you determine if the fluid is bad. That being said, it can go bad and will no longer be able to do its job. Transmission fluid can deal with a lot of abuse. You need to fill the fluid back up to the proper level right away. During this stage, extreme damage is being done to your G6’s transmission as it slips. Once it gets critically low, the transmission will begin slipping, as there is no longer any way for it to move the engine’s power to the rear wheels. Transmission fluid lasts so much longer than oil that, often people don’t look at it at all. Low or no transmission fluid is one of the most common reasons that a transmission will slip. Even if you know it’s full, you can use the color chart linked to below to determine if something is going on in the transmission itself. When trying to figure out why it’s slipping, it’s wise to start by looking at the transmission fluid. We have listed some of the most common reasons why your Pontiac G6’s transmission would slip below. Decreased Fuel Mileage– Since the transmission will no longer be able to efficiently transfer power to the rear wheels, fuel mileage will suffer as the transmission slips.If this is the case, the first thing to check would be the transmission fluid Vehicle Won’t Move– Eventually the transmission may not be able to move the vehicle at all.This friction gets them hot and you may notice an egg-like smell. Smell– As the clutches and bands inside the transmission slip, they create a lot of friction.When this happens, the tachometer jumps up as the RPM increases. ![]() Higher RPM Than Usual– When the transmission slips, it is not transferring all the energy from your G6’s engine to the rear wheels.Here are the most common symptoms that one has started to slip: We’ve lined out some of the most common reasons that your G6’s transmission could slip.Ī slipping transmission is pretty easy to recognize. You’ll want to find out what is wrong, and have it repaired quickly, before any further lasting damage can occur. It’ll get worse in a relatively short period of time, leaving the vehicle inoperable. Don’t let a transmission in need of repairs bring your workplace to a halt! Take advantage of our extensive warranty coverage to have your transmissions fixed or replaced with new models.Ĭonnect with us to stay up-to-date on the latest in Allison transmission technology and maintenance advice.If your Pontiac G6’s transmission has been slipping, it is a very serious problem. But things may go wrong rather unexpectedly. With proper maintenance and normal usage, Allison transmissions will last you a very long time with few problems. Don’t keep driving a vehicle with a faulty part! Durable Transmissions If yours appears to have never been replaced, your best bet is to contact the manufacturer and ask about the replacement process. 3) TCM Module RecallĪllison transmissions built in the mid-2000s had a recall issued for their TCM module. If there’s anything out of place, switch them back and try again to see if you can duplicate the problem. If your transmission is installed in an older vehicle, check the vacuum lines and other parts connected to the transmission. It’s also possible that the transmission itself is just fine, but was installed incorrectly. This will also improve your vehicle’s overall functionality! 2) Hooked Up Incorrectly Pro Tip: Keep your Allison transmission well-maintained to avoid accidentally triggering limp mode. If you find yourself stuck in third gear with this model of transmission, it’s probably time to have it rebuilt. Unfortunately, a driver can’t reverse limp mode. This mode is triggered by anything that could cause severe damage to the transmission, including severe overheating or towing a very heavy load. The Allison transmission 1000 model has a feature called “limp mode”, in which the transmission locks itself into third gear. Which of these potential problems apply to your situation? However, you may actually be experiencing a failsafe instead. Your Allison transmission could be experiencing a part failure, in which case your best bet is to take advantage of the provider’s warranty. What Might be Wrong with Your Transmission ![]()
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