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How Transmission Control Module Reset Works

Gearstar25 Sep, 2025Business

If you own a vehicle powered by an automatic transmission, it would certainly have a transmission control module or TCM. This is a vital component the transmission utilizes when choosing the ideal gear at any particular time. This article covers what a transmission control module is and the signs of a bad TCM.

Bad Torque Converter Symptoms, Diagnosis, and Fixes

Gearstar17 Sep, 2025Business

Learn how to spot symptoms of a failing torque converter—like gear slipping, rough idling, overheating—and what diagnostic steps to take. This guide offers clear fixes including fluid checks, solenoid testing, and when a replacement is needed to restore transmission performance.

Why the TH350 Transmission Is Still a Favorite Among Classic Chevy Owners

Gearstar22 Aug, 2025Other

The TH350 is more than just a transmission. It’s a trusted partner to some of Chevy’s most iconic cars. From the '69 Chevelle to the '72 Monte Carlo, it’s been there every step of the way. And today, with modern upgrades and careful craftsmanship, it still shines. At Gearstar, we’re proud to bring this piece of muscle car history into the present.

Looking for a Transmission That Won’t Quit? Try the 4L80E

Gearstar20 Aug, 2025Business

The 4L80E transmission continues to prove itself with every mile. Its structure, control, and versatility allow it to hold power and stay dependable without overcomplicating the build. It seamlessly integrates into performance and work vehicles, responding to pressure without slipping. That’s what keeps it in demand among drivers who expect more from their transmission.

What Makes the AOD Transmission Ideal for Street Performance Builds

Gearstar16 Jun, 2025Business

The Ford transmission family includes models known for consistency and strength. The AOD, in particular, offers characteristics that align with real-world street use while supporting performance enhancements. Its reputation stems from its original engineering and its continued presence in custom and performance-driven builds.

Shift Better With A Performance Automatic Transmission

Gearstar19 May, 2025Business

Installing a performance automatic transmission enhances your vehicle's shifts and transforms the entire driving experience. From street cruising to high-speed runs, it ensures your car responds instantly, efficiently, and reliably. That’s why more serious drivers are turning to the benefits of a Performance Automatic Transmission.

Here’s What You Need to Know About the Turbo 350 Transmission

Gearstar20 Apr, 2025Business

The right transmission fluid is essential for the long-term health of your Turbo 350. While many fluids may claim compatibility, it’s best to use the recommended Turbo 350 transmission fluid to ensure smooth operation and prevent damage. Stick to high-quality, GM-approved fluid to keep things running efficiently.

How Ford’s 4R70W Transmission Handles The Heat: A Look At Its High Torque Capabilities?

Gearstar19 Feb, 2025Business

The Ford auto transmission landscape evolved significantly with the introduction of the 4R70W. Originally designed as an upgraded version of the AOD-E, it brought improved torque-handling capabilities and enhanced durability. With its adaptability, this transmission has consistently proven its ability to handle high-stress scenarios without compromising efficiency or performance.

The Power Behind The Shift: GM 6L Transmission's Precision In Motion

Gearstar21 Jan, 2025Other

Gearstar specializes in building custom-built transmissions like the GM 6L90E Performance Level 4, which are tailored to meet the rigorous demands of high-horsepower vehicles. Each unit is meticulously hand-built to ensure quality and precision, featuring premium components such as hardened rear planetary assemblies, billet pump rotors, and updated pump vanes with hardened rings.

Performance 4L80E: Unleashing Power and Durability on the Road

Gearstar12 Dec, 2024Other

One of the best qualities of 4L80E performance transmission is its durability. It is built to withstand the strain that comes with constant heavy-duty use and is made of premium materials. Whether it’s pulling a trailer up a steep hill or pushing a high-performance car to its limits on the track, this transmission can handle the task.