What do you need to know about GM 4L80E transmission?

Because the 4L80 transmissions are sometimes used in conversion applications with earlier, non-PCM controlled engines, GM and aftermarket control modules are required and used to control the operation of the transmission in these scenarios. The 4L80E transmission may feature two speed sensors, one for turbine input speed and one for output speed.

What kind of case does a GM 4L80E have?

Like the other GM automatics, the 4L80E featured a die-cast aluminum case. Unlike the later 4L60E transmission, the 4L80E did not feature a removable bellhousing, but an integrated bellhousing with only the Chevrolet 90 degree engine bolt pattern being available.

When did the GMC 4L85 transmission come out?

The 4L85 transmission was introduced in 2002. Some of the differences included a 5-pinion output gearset and 5-pinion reaction gearset. Though not a transmission development change, in 2006 GM specified a new transmission fluid formulation and required its use (for warranty) in the 4L80 series.

Is the 4L80 transmission compatible with the CJ5?

The 4L80 is doubtless a very successful OEM transmission, and a terrific conversion transmission in the right Jeeps and situations. However, with its 26-1/4″ length, it is a longer transmission and is not compatible with short-wheelbase Jeeps such as the CJ5 in any scenario, or CJ7’s if they have a lot of suspension lift.

Where can I get a crossmember for a GM 4L60E?

Depending on whether or not your vehicle ever came with a 4L80E is going to have a big impact on how expensive a crossmember is going to be for your 4L60E to 4L80E swap. If the vehicle came with the 4L80E you can head over to the nearest parts store, GM dealership, or salvage yard and just pick one up.

What kind of vans can a 4L80E be used in?

A few stock-applications include the Chevrolet Avalanche, Silverado (2500HD and 3500 series), Express vans, and Suburbans. They are also installed in GMC Sierras, Yukon XLs, and Savana vans. Some Hummers also ran them as well.

Can a 4L60E be used as a torque converter?

Alternatively, you can use the flex plate and the torque converter from the 4l80e transmission. The engine control unit often has to get reflashed and reprogrammed for the 4l80e transmission to work properly. You can search the web or find a local dealer to do this job for you.

What’s the difference between the 4L60E and 4L80E?

One of the similarities between these transmissions is that both of them are electronically controlled. The bolt pattern for the transfer case is also the same so it will fit in a swap without problems. One thing to consider is that the 4l60e was named th350 and 700r4 before in earlier models and the 4l80e was named th400.

When did the GM 4L80E transmission come out?

Despite its name, the 4L80E is not an upgrade to its GM counterparts. Introduced alongside the original 4L60 in the early 1990’s the 4L80E was designed for large trucks and is designed as a heavy duty unit, rather than a transmission for smaller cars or even some pickups.

What’s the difference between a truck and a 4L80E?

My truck is a 99 with a 350 the transmission im looking at is a 96 with a 454 The control system is the same for all 4l80e’s with 1 exception. 91-93 4l80e’s used a different pressure control solenoid that required a clean8ng cycle every 10 seconds where the solenoid was stroked from full open to full closed and back to normal operation.

What kind of torque converter does GM 4L80 have?

The torque converter is a fluid turbine drive and like those on its predecessor transmissions; the TH350C, 700R4, and 4L60, the 4L80 features a lock-up pressure plate for direct mechanically coupled driving from the engine crank. The 4L80 features a 310 mm torque converter. As to length, this transmission is 26-1/4″ long.

How to adjust bands and change automatic transmission?

The vehicle is a 1998 Dodge Ram 1500 4X4 with a 46RE transmission. This repair was done after a transfer case repair which required removal of the propeller shafts. With the front shaft out of the way, access to the front band adjustment screw was better than normal.

Where is the speed sensor located on a 4L80E?

It is also worthy to note that there are different placements of the speed signal, and it depends on the year in which the transmission was launched. For instance, 1991 – 1996 4L80E’s have a speed sensor that is located at the driver’s side rear portion of the case. On the other hand, the 1997 and later 4wd applications may lack the rear sensor.

What does PWM solenoid do on 4L80E transmission?

On the other hand, a PWM lockup solenoid controls the 4L80E torque converter (in factory mode), and it helps to provide a smooth lockup execution. Two-speed sensors can be found on the 4L80E transmission, and these sensors serve as a turbine input speed and output speed, respectively.

Where is the Transmission Control Module on a 4L80E?

The 4L80E Transmission system is equipped with a computer called the Transmission Control Module (TCM), located in the left/rear passenger seat compartment which interprets, ana-lyzes and records electronic signals from sensors and switches located on the engine, brake pedal, and transmission.

How much does a GM 4L80E automatic transmission weigh?

The transmission typically accepts a 6.3 quart fill. It features a dry weight of 254 lbs. and can weight up to ~268 lbs. full. Like earlier automatics, the 4L80 features one line pressure tap available for testing and diagnostic purposes.

When did sonnax change the reverse line on the 4L80-E?

In 1995 there was a change in both the surface of the drum and the lining of the band in the 4L80-E. In addition, there also was a change in the boost valve located in the front pump for reverse line pressure boost. The differences in the bands are very clear ( Figure 4 ).

Is the Chevy 4L80 compatible with GM engines?

While the 4L80 is generally mechanically compatible with Chevrolet style GM engines, it does require a transmission controller. That controller may be the factory-integrated with the PCM as on 1991-1999 TBI & Gen II engines, with the 1999-2007 Gen III engines, or the 2007+ Gen IV engines.

Is there a problem shifting from 2nd to 3rd gear?

Have check engine, the computer says it needs the shift solenoid, the problem is it will not shift from 2nd to 3rd gear on an automatic transmission. Also found a vacuum line near to transmission disconnected but not sure where it goes.

When to replace shift solenoids in GM 4L60-E?

TIP 4: If your transmission is slipping, replacing the shift solenoids, even if they’re fried will not solve the slipping issue. The 4L60-E transmissions uses several solenoids and sensors to control/activate its 4 gears.

What kind of transmission does a 4L80E have?

The 4L80E Transmission is a fully computer controlled transmission that comes bolted to the higher horsepower and torque trucks.

Can a 4L80E go to 2nd gear with no solenoid?

If for some reason it doesn’t and it cooks the harness, the other solenoid would still likely be OK, because it can never see more than the load it places on itself. A 4L80E defaults to 2nd gear when it has no solenoid function. It also defaults to max line pressure. A bad “A” solenoid will kill low gear and OD.

What happens when a 4L80E goes into limp mode?

A 4L80E defaults to 2nd gear when it has no solenoid function. It also defaults to max line pressure. A bad “A” solenoid will kill low gear and OD. A bad “B” solenoid will kill 3rd gear and OD. However a lack of 12V supply can happen anywhere from the battery-ignition switch-fuse block- harness- connector- internal harness.

Is the 4L80E Mega Monster transmission Tough Enough?

Popular Accessories (These have been Discounted for your transmission package!) Engineered to Dominate, the 4L80E Mega Monster transmission is tough enough to withstand the rigors of even the toughest street machines delivering tire-spinning shifts race after race.

When did the Chevy 4L80E transmission come out?

Unlike the later 4L60E transmission, the 4L80E did not feature a removable bellhousing, but an integrated bellhousing with only the Chevrolet 90 degree engine bolt pattern being available. In 1991 the 4L80E was rolled out in GM trucks, including the Sierra, Silverado, Suburban, etc. as well as the Hummer H1.

What’s the difference between GM 4L80 and 4L85?

Readers may also note that the 4L80 and 4L85 terms are sometimes used without the “E” suffix, as all GM automatics are now electronically controlled and therefore in no need of differentiation. The 4L80 nomenclature denotes that the transmission is a 4-Speed, Longitudinally mounted, and for 8000 lbs. vehicle weights.

What is the RPO code for a GM 4L80 transmission?

The 4L80 nomenclature denotes that the transmission is a 4-Speed, Longitudinally mounted, and for 8000 lbs. vehicle weights. It’s RPO code is “MT1” and has been domestically manufactured in GM’s Ypsilanti and Willow Run plants.

What do you need to know about GM 4L80E transmission?