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Transmission & Drivetrain

GM 6L80E/6L90E Transmission Problems And Performance Upgrades Offered By Gearstar

GM-6L80E-and-6L90E-Transmissions

Starting in the 2006 model year, General Motors released the 6L80E and 6L90E transmissions that developed several issues that tend to frustrate transmission as well as body shop technicians servicing them globally. In this blog, we will try to shed some light on these issues and how you can fix them.

Issues

  • The vehicle not releasing from “Park”
  • Transmission gear shift not moving to “Park”
  • Transmission randomly pops out of “Park” with no one in the vehicle.
  • A loud rattling sound when transmission engages reverse
  • Upon removing the transmission to change the filter, or doing any service to the transmission requiring a refill of the fluid, vehicle not wanting to move or engage the transmission in any range.

The plucking rod actuator assembly GM part number 24200173 has been known to fail and cause most of these concerns. Spring-loaded bullet ends slide off or develops a burr causing the rod to jam. When performing an overhaul, remove the rod and closely inspect for wear or damage. If the vehicle doesn’t move in any range, once you eliminate all other possibilities, the output shaft splines in the 6L80E transmissions or 6L90E transmissions may be stripped away.

Another common problem seen on most wheel drive cars and four-wheel-drive trucks is that moisture gets trapped on the spline and destroys both the trans output shaft as well as the transfer case 4-wheel drive unit splines. On the later versions, hydramatic put an O-ring on the shaft to address this concern. If you are servicing an earlier design shaft with no O-ring, and there is no wear on the splines, you can put an O-ring on the output shaft splines to counteract moisture.

6L80E/6L90E Performance Transmissions Upgrade

If you are looking to get the most of your vehicle with 6L80E /6L90E transmissions and considering a major trans upgrade, Gearstar has the best products available on the market. Our high-performance transmissions —including GM 6L80 (level 1 and 2) and GL90 — are built to the horsepower, torque, and rear gear ratio specs of the engine that it will be matched to. Also featuring a torque converter, the transmissions come with a complete master overhaul kit with new gaskets, seals, rings, and pistons. Wide inlet filter, bearing and bushing kit are also included. If we talk about the clutch, you get expanded capacity1-2-3-4, 4-5-6, 2=6 and3-5 low/reverse clutch packs with latest generation friction and steel.

Other important upgrades consist of:

  • Updated AC Delco pump cover (stator support), body (bell housing), and vanes with hardened rings
  • Hardened Rear Planetary Ass’y
  • Upgraded line boost valve and slide spring
  • Performance-tuned solenoid valve body with new ACDelco transmission control module

All performance transmissions offered by Gearstar are designed for optimum precision, durability, and custom-built by our master technicians from start to finish. They are DYNO-tested with torque converter (the equivalent of 100 miles) to make sure the package stays in perfect operating condition.

Apart from General Motors, we also offer top-quality Ford and Mopar transmissions. Let us help you with what you are looking for!

Categories
Transmission & Drivetrain

Why Are 700R4 Torque Converters The First Choice In The Market?

Choosing the right torque converter for your vehicle can be tricky. You need to weigh in a plethora of factors for getting noticeable improvement in the acceleration capabilities of your vehicle. Regardless of whether you are a street driver or an enthusiastic car racer, you need to follow some basic guidelines for ensuring your car performs to its true potential. This primarily includes the stall speed, power curve, and torque output of the vehicle.

Most modern users opt for 700R4 or the 4L60E torque converters while upgrading to an overdrive automatic. This is due to the fact that both of them are sophisticated solutions and offer ample convenience. However, they mainly differ in terms of their electronic circuitry. Here are a few parameters that give an edge to 700R4 torque converters:

Price

Most overdrive rebuilding options come at a heavy price. If you are planning to upgrade your transmission system, you should consider going for analog overdrive versions. This will allow you to enjoy the benefits at a lower price.

Installation

Unlike 4L60E torque converters, 700R4 can be installed without any hassles. All you have to do is to take care of the TV cable hookup, shorten the driveshaft, move the cross-member, and add a 12-volt source to the transmission.

Simple Conversion

Since 700R4 comes with an old-school speedometer cable, it is much easier to handle. You can upgrade any old chassis by following some minor floor pan tweaking procedures.

When it comes to transmission systems, Gearstar Performance Transmissions has it all covered. Get in touch with them to buy 700r4 torque converter lockup kits for your vehicle.

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Maintenance

Why Are Automatic Transmissions Better Than Manuals?

There’s an everlasting debate around manual and automatic transmissions, with both the types showcasing some promising pros and cons. However, modern problems call for modern solutions and hence a majority of the top-notch motor vehicle brands have adopted the automatic way of life with self-shifting gears making transmissions smoother than ever. However, if you’re a novice when it comes to car gear, we have just the list of pros and cons needed to tell you why automatic or self-transmissions will be perfect for you.

How Do Automatic Transmissions Work?

Before we take the dive into the pros and cons, let’s get to know automatic transmissions better. Every time you change gears in your car, the power from the engine transfers to the drive axle and powers mobility in the vehicle, making it move forward. In a manual transmission, the driver has to engage or disengage gears to make it move, whereas, in automatic transmissions, multiple gears work together constantly allowing the car to change gears on its own. Because of this, drivers, usually beginners or intermediate level drivers, prefer the automatic transmission over the manual. Apart from this:

    • Automatic gears are much easier to use and are considered a safer option for unsteady terrains. The next time you plan a weekend gateway to the hills, make sure you choose automatic over manual.
    • Automatic gears can start, accelerate, and stop cars much easily because of the automatic gears, which means cutting through traffic, sudden halts, open highways, and crowded roads can easily be steered with automatic gears.

Intrigued yet? If you’re already looking at automatic transmission for sale, you’ve come to the right place. However, before you splurge on your new gears, let us tell you why manual gears too are in demand.

    • Manual transmissions are usually cheaper and come with better fuel efficiency.
    • Professional riders usually prefer manual since you can customize your gear shifts according to your needs without having a machine automatically determine.

While some cars are incomplete with an automatic transmission, the others prefer a vintage touch to their vehicles! The trick is to choose the right gear for the right vehicle, and the rides will be smoother than ever!

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