In the last couple of articles, we used terminology relating to pressure control solenoids such as PWM, Frequency, and Duty Cycle. In this article, I thought I...
Most transmission shops are now starting to work on CVTs. At first, most techs were kind of scared of the new design transmission and thought it was...
The 10L1000 was introduced in 2020. It replaced the Allison LCT 1000, which has been around for more than 20 years. The LCT 1000 is an excellent transmission...
Have you ever been somewhere, met someone, or seen a scenario play out that you would swear you had previously experienced? Or maybe in your mind, you are...
During my presentation on the GM 8L90 transmission at Expo, I asked the group, by a show of hands, who had the special service tools that GM requires for...
Speed sensors – how complicated could they possibly be? They use only two or three wires, so what’s to learn? Well, imagine checking a wheel speed sensor...
In this issue of Keep Those Trannys Rolling, we will look at one of the most common calls coming into the ATRA Hotline regarding the 6L series transmission...
Now that summer is in full swing more and more transmissions are burning up in the hot summer sun. Giving the example of the northwestern heat of 120+ degrees...
Two months ago, we covered testing potentiometers, such as TP and APP sensors. Both of those sensors could cause driveability complaints, transmission shift...
Introduced in 2015, with a major update in 2018/19, the 8L90 is starting to appear in shops around the country. Used in numerous GM car and light truck...
Like other transmissions, the 8L applications have undergone numerous updates and changes through the years. Many of those updates/changes were due to...
In this issue of Keep Those Trannys Rolling, we will look at Lexus’ all-wheel drive (AWD) system. For this example, we will look at the 2020 Lexus RX350F...
Continuing with our recent theme of inputs, this month we’ll cover oxygen sensors. There’s a lot of information you need to know to understand oxygen...
This article is a bit of a teaser for the upcoming Powertrain Expo, coming this October in Las Vegas. We will demonstrate how to use various scopes...
The Fiat 500 and 500 L are beginning to use a transmission that’s taking repairs to a different level. When this unit starts to break or act up, information...
Just when one thinks they have a handle on all of the weird stuff that happens in the world of transmissions, in rolls an issue you have never seen. With the...
If you’ve been in this profession long enough, you have likely seen some pretty crazy things. Years ago, things were fairly predictable; a seal leak causing...
The 700R4 has been around for over 30 years, and yet they still show up in shops all across the country. For veteran builders this unit is pretty...
Into everyone’s life a little rain will fall. Or, in this case, the U0101 Loss of Communication with TCM. The code is as simple as the description; there’s...
In this issue of Keep Those Trannys Rolling, we’re going to take a look at a 2015 Ford Explorer with a “Transmission Not in Park” message displayed in...
