What causes a 4L80E to slip?
Solutions: It can be the shift or TCC (torque converter control) solenoid. Any easy fix might be checking the wiring to the transmission for shorts or loose connections. The ECM can also pose a problem that can result in the limp mode in the transmission. A quick fix to this problem is to restart the engine.
Can you run a 4L80E without a computer?
The only logical transmission for our 4×4 was the 4L80E four-speed automatic transmission commonly found in 3/4- and 1-ton GM trucks and SUVs. However, the 4L80E can be easily converted to a manually shifted valvebody, which eliminates the need for the computer and much of the electronics and wiring.
How many shift solenoids does a 4L80E have?
This set contains the two 4L80E transmission shift solenoids found in the valve body. It is recommended that you replace both of these solenoids at the same time as they tend to go bad together.
How much does it cost to rebuild a 4L80E transmission?
A local transmission shop will rebuild a 4L60E for around $900 to $1,200 and a 4L80E for $1,300 to $1,800, with used units going for about $400 and $600 to $1,000, respectively.
What are the symptoms of a bad EPC solenoid?
The main driving symptoms that you will notice with the symptoms of a bad transmission control solenoid is that there could be delayed gear shifting, you can’t downshift and your engine will continue to rev, your transmission will be stuck in the neutral position, and the shifting of gears becomes very rough and choppy …
How much horsepower can a 4l80 handle?
In short, Performance Automatic yields a 4L80E engineered to handle 700+ horsepower and comparable torque.
Which is better 6L80E vs 4L80E?
“The main difference is that the 6L80E has much more versatile gear ratios. The 4L80E is more proven because it has been around much longer and more parts are available for it, but the 6L80E has come a long way and they can handle tons of power with a few basic upgrades.”
How do you bypass a TCC solenoid?
How do you bypass a TCC solenoid? To bypass the shift and TCC solenoids, you simply need to connect standard 194 light bulbs to these individual circuits coming from the PCM and then connect the other side of the bulbs to ignition B+. The light bulbs will then serve as a “load” which will simulate the solenoids.
How many miles is a 4L80E good for?
IMHO, the 6.5’s and 4L80E’s are capable of 500,000 miles…
How much HP can a stock 4L80 handle?
How much power can the 4L80E handle? A totally stock unit or rebuild will typically live well with up to 450 flywheel HP/TQ. Above this point the direct clutches will not live long without some hydraulic improvements.
What kind of clutch does a 4L80E use?
A torque con- verter clutch automatically engages at cruising speeds to improve fuel efficiency. Unlike hydraulically controlled automatic transmissions, the 4L80-E transmission uses electrical sig- nals to specific gear shift solenoids which produce smooth shifts and quiet operation.
Where is the Transmission Control Module in a 4L80E?
TRANSMISSION CONTROL MODULE (TCM) 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.
What is the neutral safety switch on a 4L80E?
Unlike hydraulically controlled automatic transmissions, the 4L80-E transmission uses electrical sig- nals to specific gear shift solenoids which produce smooth shifts and quiet operation. A neutral safety switch prevents the vehicle from being started if the transmission shift lever is in a position other than P (park) or N (neutral).
What kind of transmission does Hydra Matic 4L80E have?
The Hydra-matic 4L80E is a 4-speed automatic transmission which uses electronic control for smooth shifting. It offers a fourth gear overdrive to increase fuel efficiency. A torque con- verter clutch automatically engages at cruising speeds to improve fuel efficiency.