September 2019 Archives - Transmission Digest
Allison 1000/2000/2400, 2000 – 2015

Subject Matter: Allison 1000/2000/2400

Critical Wear Areas & Vacuum Test Locations

The P0776 Twist

Tom from “Transmission Shop” in Minnesota had a customer come in with a 2012 Honda Odyssey with a six-speed BYKA transmission experiencing erratic shifts. It had an intermittent and inconsistent 2-3 shift where sometimes it would have a slight flair and bump while other times it would experience a large flair and a bump. Other times it shifted into 3rd then neutral and back into 3rd.

General Motors 9T50 Nine Speed FWD: Part Two

In this continuation from Part One, we’ll be discussing the rotating clutches, planetary gear sets and more on the 9T50.

September 2019 Issue

In This Issue:
Ford 6F35: Low-Reverse/1-2-3-4 Improved Clutch Housing
Ford 5R110W: Redesigned Sun Gear Shell
Ford 6R60 and 6R80 Transmissions: TCC Slip Code
GM 4L60 E Series: Intermittent Hard Shifts
4L60E Transmission: Late 2-3 Shift
4L60E: TCC Stuck-On Sensation

Customer Service in the Queen City

Mike Yeager entered a transmission shop after he moved to Cincinnati because his car was in desperate need of repair. Now he owns Northgate Transmissions, where his customers get a personal touch to their service and never leave the shop with an apology instead of a repair.


When last we met I was in the midst of explaining, step by step, the process of making the sale. We got up to step eight in which we presented our findings to our customer. This cannot be done until we have all of the information we need to not only diagnose the problem(s) but to determine what is needed to take care of it or them; what parts it will take, their availability and cost, what labor operations will need to be performed and their cost, and how long it will take to complete all work.

Quality Decisions

After entering the doors of Consolidated Vehicle Converters (CVC) you will quickly notice why every visitor has commented on the cleanliness and organizational skills of this remanufacturing facility which is phenomenal considering the dirty pieces of work they deal with every hour of every day.

A Transmission Problem, Or Something Else?

The subject of this article is a 2007 Nissan Maxima that was brought to us from a shop that we do a lot of work with. They had initially called and wanted to see if we could point them in a direction on what to look at. The shop had stated the vehicle had code P0868 (secondary pressure down), but after the code was cleared, it had not returned yet the car was still acting up.


The owner of a 2008 Toyota Camry with a 3.5L engine powering a U660E transmission brought his vehicle in to Deltrans with hard shifts. Bill Harris road tested the vehicle to verify the complaint. In doing so he not only verified the owner’s complaint, he also discovered that it did not shift past 4th gear.