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How Do I Know If My GM 4L60E Transmission Is Failing?

GM’s popular 4L transmission family was manufactured for a wide range of vehicles produced between 1992 and 2013. These were 4-speed units that were available on 2WD and 4WD vehicles, from trucks to SUVs and commercial vans. Most notably in this transmission family is the 4L60E, but the group also includes 4L65E, 4L70E, 4L75E, 4L80E,…

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All You Need To Know About GM 6L80E/6L90E Transmissions

The GM 6L series transmissions are six-speed automatic gearboxes widely used in various General Motors vehicles. The family includes the 6L45, 6L50, 6L80/6L90 and 6L80E/6L90E. In this article we’ll provide comprehensive information about these transmissions, especially the popular 6L80E and 6L90E variants, addressing common questions and concerns. How Much Does A GM 6L80E or 6L90E…

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Does A Rebuilt Or Remanufactured Transmission Need A Break-In Period?

When you get your transmission rebuilt, you want to get as much mileage out of it as possible. When it comes to remanufactured engines, there are specific guidelines on how to run them in. This ensures that all the moving components are bedded in, helping the engine last longer. It’s not quite so clear-cut for…

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Toyota 2AZFE – Worst Engine Or Not?

February 20, 2025

At Powertrain Products, we get a lot of requests for our “Worst Engine Or Not?” series, but few engines have been as highly requested as the Toyota 2AZFE. A larger displacement version of the 1AZFE engine, the 2AZ found its way into a variety of popular Toyota cars, including the Camry and RAV4, as well as several Scion vehicles. So without further delay, let’s look at the history of the Toyota 2AZFE engine, exploring its pros and cons and cover how Powertrain Products improves on this popular Toyota powertrain. History Of The Toyota 2AZFE Engine The Toyota 2AZFE is a…

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Dodge 2.7L – Worst Engine Or Not?

January 23, 2025

When it comes to engines, many automotive enthusiasts often engage in passionate discussions about the best and worst performers. One engine that frequently finds itself in the crossfire of debate with Mopar fans is the Dodge 2.7-liter V6. In this blog post, we’ll examine this engine’s history, its pros and cons, and whether it deserves the title of worst engine.  History Of The Dodge 2.7L The Dodge 2.7-liter V6 engine made its debut in the late 1990s, primarily in vehicles such as the Dodge Intrepid and Chrysler Concorde. Based on Chrysler’s 3.5-liter V6, the 2.7-liter motor was designed to offer…

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Engine Problems Explained: Cam And Lifter Wear

January 10, 2025

Cam and lifter wear is a common issue in engines that can lead to significant problems if not addressed. That’s why we’re covering it in this post. In it, we’ll explain: What Is Cam And Lifter Wear? Cam and lifter wear occurs when the surfaces of the camshaft and lifters experience excessive friction and wear down over time. This wear can lead to reduced engine performance, increased noise, and, eventually, engine failure.  As shown in this video of a GM L94 6.2-liter V8 engine, both the cam and lifters show signs of wear and damage. After tearing this engine down,…

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Engine Problems Explained: FOD Or Debris Damage

December 20, 2024

Debris (or FOD, Foreign Object Debris) damage in engines is a common yet serious issue that can significantly impact vehicle performance and your engine’s lifespan. That’s why we’re covering it in this post, including the following topics: Read on to find out more!  What Is Debris Damage? Debris damage occurs when foreign particles, such as dirt, dust, or metal shavings, interfere with the engine’s normal operation. This contamination can come from various sources, including poor air filtration, inadequate maintenance, or internal engine wear. Here’s a closer look at the two types of debris damage: Dirt And Other Foreign Objects “You…

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Engine Problems Explained: Spun Bearings

November 28, 2024

Spun bearings may not sound like a serious issue, but it’s one of the last phrases you want to hear from your mechanic. It refers to when the bearings inside your connecting rods break and start to spin with the crankshaft. This can occur from a variety of factors and the result is usually a complete engine rebuild. What Does It Mean To Spin A Bearing? The connecting rod in your engine links the piston to the crankshaft. On the crankshaft end, a pair of shell bearings protect the rod as the crank rotates. If the shell bearings wear thin,…

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How To Find The Engine Code On Your Ford Modular Engine

November 22, 2024

If you own a 4.6L or 5.4L Ford modular engine, you may need to find the engine code in addition to the VIN to order a reman engine. For these engines, the VIN doesn’t always provide all the information needed about the engine. It’s pretty easy to find the engine code for a Ford modular engine. We’ll show you how. What Is An Engine Code? A Ford engine code is a string of seven characters. It contains two letters, three numbers, and then two letters at the end. It’ll tell you a lot about your engine, such as: In some…

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Engine Problems Explained: Detonation Or Engine Knock

October 25, 2024

Modern engines offer a perfect mix of smoothness, tractability, performance, and efficiency.  Is your vehicle exhibiting strange noises from under the hood, feels underpowered or runs rough? It may be suffering from engine knock. In this blog, we discuss detonation or engine knock, what it can do to your engine, and what can be done to resolve it. What is Engine Knock? The terms engine knock and detonation are used interchangeably. But in essence, detonation (also called pre-detonation) causes engine knock. Detonation is caused by early combustion in the cylinders. What Causes Unwanted Detonation? In a gas engine, the pistons…

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