We provide a large inventory selection for 4L80E automatic transmission overhaul kits, parts including steels, kits, solenoids, filters, solenoids. This wide selection of parts are used in the GM 4L80E automatic transmission in GM C and K series pickups, Chevy vans including the express, Suburbans, School Bus, Motor Home, GMC Sierra and Savan's. In addition to these kit we also supply torque converters, fluids, problem prevention kits and in most cases we can supply good take out hard parts and save you some money.
Free infomation is provided on parts illustrations, maintenance tips, overhaul tips and assistance in identifying just what automatic transmission you have in your vehicle. In addition a factory description and ratio information is available.
Parts Illustration Troubleshooting/Overhaul Manual |
Maintenance Tips Overhaul Tips |
Remanufactured Automatic Transmission What domest transmission do I have? |
Description: 4 speed rear wheel drive, electronically controlled, automatic overdrive transmission with a torque converter clutch. |
Ratios: 1st: 2.482 2nd: 1.482 3rd: 1.000 4th: 0.750 Rev: 2.077 |
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Towing Capacity: 12,000 lb (5442 kg) to 21,000 lb (9525 kg) Max Gross combined vehicle weight (application & axle ratio dependent) |
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Engine Range: 4..3L - 7.4L gasoline 6.5L Diesel |
Fluid Capacity: (approximate)Bottom Pan Removal: 4.0L - 6.0L 4.2qt - 6.3qt |
Fluid Type: |
This is an abbreviated list and other parts are avialable. If you need something that is not listed just let us know. | |||
Part Number |
Description |
Years |
Price |
TM4L80E | Troubleshooting/Overhaul Manual | 1991-on |
$48.97 |
83-SGVT-22 | Overhaul Manual on video tape |
$71.57 |
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MRK3300-S | Master Rebuilder Kit (without steels) | 1991-95 |
$150.97 |
MRK3300E-S | Master Rebuilder Kit (without steels)....High Energy | 1996 |
$174.97 |
MRK3300F-S | Master Rebuilder Kit (without steels)....High Energy | 1997-on |
$171.86 |
K3300-9 | Steel Plate Sub-kit | 1991-96 |
$73.77 |
K3300F-9 | Steel Plate Sub-kit.....Tubulator Design | 1997-on |
$86.89 |
K33980 | Bushing Assortment Kit | 1991-96 |
$31.99 |
K33980 | Bushing Assortment Kit | 1997-on |
$31.99 |
K34940 | Thrust Washer Kit (without Selectives) | 1991-on |
$13.61 |
K33941 | Thrust Bearing Kit | 1991-1996 |
$34.81 |
33815 | Overdrive Roller Clutch | 1991-on |
$39.57 |
34418HD | Intermediate Sprag Assembly 32 elements | 1991-on |
$78.81 |
34402A | Low Roller Clutch | 1991-4/95 |
$16.44 |
33813D | Low Roller Clutch | 5/95-on |
$21.99 |
K33889 | Reverse Boost Bushing & Sleeve, prevents high line pressure in reverse & uncontrollable line rise. Prevents broken pistons, drums and cases | 1991-on |
$49.91 |
K33887 | TCC Regulator Valve Kit, reduces burned fluid, overheated converters, code 68, Improves TCC apply pressure | 1991-on |
$32.89 |
K33900F-4 | Piston Kit..... Molded Rubber | 1997-on |
$54.89 |
The following components are available to enhance Shifting | |||
Part Number |
Description |
Years |
Price |
K33944A | Jr Shift Kit TransGo, has a relief valve to prevent excessive line pressure | 1991-on |
$74.98 |
ST33944 | Shift Correction Package Superior | 1991-on |
$109.89 |
The following electronic components may or may not be required. The best way to determine this is by check/consulting computer code(s) or electronic scanner results. | |||
Part Number |
Description |
Years |
Price |
33875 | Input Shaft Speed Sensor | 1991-on |
$63.78 |
33875 | Output Shaft Speed Sensor | 1991-on |
$63.78 |
K33869A | Wiring harness with temperature sensor kit (updated/ clip on style) | 1991-on |
$195.88 |
33877 | Pressure Switch Manifold | 1991-on |
$43.89 |
33871 | A Shift Solenoid.........Latest Design | 1991-on |
$17.85 |
33872 | B Shift Solenoid.........Latest Design | 1991-on |
$17.85 |
33870 | PWM Lockup Solenoid. | 1991-on |
$31.98 |
33879A | Variable Force Motor...... Black Body - use with 33879A | 1991-on |
$74.86 |
33883 | Force Motor Retaining Clip.........use with 33879A | 1991-on |
$3.96 |
Torque Converter ---------- Torque Converter Information For this series transmission there are five different possibile torque converters. When rebuilding your transmission it is always recommended that you change the torque converter. When ordering the torque converter you must supply the four digit code off of the existing unit (located on sticker). The possibities are: |
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Code | Order Part Number | Application | Price | ||
152, 492, 494, 528, 576, 606, 670, 671, 675, 841 | 4L80-1 | 1991-up 454 Gas engine, 6.2L Diesel engine, low stall: single element stator | $242.82 | ||
8676526, 8674193, 8682604, 8685-366 | 4L80-2 | 1991-up 5.7L 350 engine, high stall: dual element stator | $2420.82 | ||
8685407, 8674198 | 4L80-3 | 1993-up 4.3L Truck, Van high stall, single element stator | $247.95 | ||
0827, 0829 | 4L80-4L | 2000-up 5.7L, 6.5L, 7.4L low stall, single element stator | $293.87 | ||
364, 830, 0831, 0825 | 4L80-4H | 2000-up 4.3L, 5.7L, 6.0L, high stall, single element stator | $293.87 | ||
We supply only high quality remanufactured torque converters, cost + $50.00 core deposit |
Miscellaneous Information and Specifications | ||
Maximum Engine Torque: 440 lb (597 Nm) | Maximum Gearbox Torque: 885 lb (1200 Nm) | Maximum Speed Shift: 1-2 5200 rpm 2-3 5200 rpm 3-4 5200 rpm |
Maximum Gross Vehicle Weight: 7200 lb (3265 kg) to 16,500lb (7483 kg) (application and axle ratio dependant) | 7 Position Quadrant: P,R,N,OD,D,2,1 | Control Systems: Shift Pattern: (2) two-way on/off solenoids Shift Quality: Force motor control Torque Converter Clutch: Pulse with modulated solenoid control |
Troubleshooting/Overhaul Manual
These manuals are typically 50 to 85 pages and contain both troubleshooting information and data to support overhaul, such as electronic data, illustrations and specific procedures and specifications. These are professional shop manuals which will give you the capability to diagnose problems, and evaluate repair options. If you decide to have your transmission overhauled at a local shop you will be armed with detailed knowledge of problems and potential fixes. This information should allow you to get the best deal, Always compare pricing for labor. If you supply the parts and ask for warranty in the end you will save money.
Red Line high-Temp ATF |
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Typically contains gaskets and rubber kit, sealing rings, metal/rubber clad seals, friction plates, steel plates* , front and rear bushings, filter and where applicable Band* and/or Modulator*.
*not included if listed separately
Regular maintenance cycles and continued checking of fluid levels is critical to the life of your transmission. Operating temperature is the single most critical parameter effecting the life of the transmission. Keep the temperature down and fluid fresh helps the units typically last a very long time under normal driving conditions (no teenagers involved). We can supply a couple of aftermarket products to help you get the most out of your transmission:
Auxiliary Transmission Oil Cooler.
The Truco part number LPD4451 is an excellent auxiliary oil cooler to provide additional cooling capacity. The kit includes all parts required to mount the unit and connect to existing cooling lines. This is a typical do it yourself project. The unit typically mounts in front of the radiator. Your cost on this transmission life saving product is $64.94 plus shipping and handling.
Generally we don't recommend additives but we have found that the Lubegard "Automatic Transmission Protectant" at only $13.93 + S&H can:
- Prevent overheating, reducing transmission temperatuare up to 40 degrees F.
- Extend fluid life
- Eliminates transmission fluid foaming and oxidation
- Reduces wear throughout the transmission
- Elimates clutch chatter and torque converter shudder
- Softens and modifies harsh shifts
- Provides for smoother shifting
- Eliminates objectionable noises during shifts
- Keeps valves and governors free and frees stuck valves in valve bodies
- Raises the thermal and oxidative stability
- Only product that increases the fluids ability to transfer heat
- Contains no Ash
Deep Transmission Pan
These high quality deep transmission pans can signifanctly improve the cooling of your 4l80E transmission. These pans are manufactured using heavy wall finned aircraft aluminu housings for additional cooling capability. They allow for an additional 4.5 quarts of fluid. The transmissions are easier to check and service these advance pans and offer the following features:
- O'Ring seal, snapped into a inverted "V" groove for a positive seal without gasket or silicon (except TorqueFlite).
- Magnetic drain plug to attact metal particles (letting in know earyl about potential problems).
- 1/8 NPT temperature sending port, you can now monitor the transmission temperature if desired. Unit ships with plug. We also offer unique heavy duty larger transmission oil pans.
- Furnished hardware; plugs, cap screws and washers are stainless steel in most applications, your cost $312.65 plus S&H.
Always consult and follow owners manual for maintenance intervals and requirements.
Before you tear into the transmission, we suggest you first study the troubleshootin/overhaul manual, add a bottle of our "Automatic Transmission Protectant" and put a few miles on the vehicle. This just might free valves and governors that are possible stuck in valve bodies. Be sure to get computer trouble code(s), see owners manual for technique to acquire malfunction codes. This will be a great assistance in diagnosing possible problems.
Twenty-One Steps to Successful Transmission Repair:
1) Do your research locate any technical bulletins pertaining to your transmission, ask your dealers parts department for bulletins.
2) Clean the entire transmisssion, including the valve body.
3) Check pump, valve body and case for warpage.
4) Flat file pumps, valve bodies, and cases. Just a few strokes with the file to knock off high spots and handling burrs.
5) Check all pump gear clearances.
6) Check planet pinion end play and side to side motion.
7) Soak all planet assemblies.
8) Soak all friction materials for 15 - 30 minutes.
9) Make sure all steels are in usable condition or replace. Do not sand or tumble steels when used against High Energy friction materials.
10) Inspect all surfaces upon which a band will ride.
11) Replace all rotating oil control rings.
12) Check all oil control rings and rubber products in the bores for proper fit.
13) Check all major support bushings and bushings that control lub oil.
14) Pre-lubricate all bushings and thrust washers.
15) Pre-lub pumps.
16) Pre-fill torque converter.
17) Use available manuals to ensure proper specifications and clearances.
18) Set correct clutch and band clearances.
19) Take the time to set the total end play.
20) Use a torque wrench on all pumps and valve bodies.
21) Always double flush the cooling and cooling return lines to the radiator to remove particles trapped there.
Take your time, take your time, take you time!
Failue modes for torque converters manifest themselves in different ways, slow failue, i.e. loss of power over time, instant failure, i.e. input shaft spline failure. Following is a short list of problems, prossible causes:
Complaint |
Possible Cause |
Reference/Fix |
Lockup Surge | Worn distributor shaft | ATRA Bulletin #406 |
Lockup Shudder | Inadequate oil to converter | ATSG Bulletin #96-22 |
TCC Slipping (1994-95) | PCM Software | ATRA Bulletin #473 |
The difference between stator design, look inside the converter at the larges set of splines (stator shaft splines). If the splines are split then the unit has a dual element stator. Do not interchange single element and dual element converters.
Torque Converter Installation/Preparation
Many torque converter problems can be avoided with proper preparation:
1) Pre-thread converter bolts by hand to make sure there is no sign of stripped threads.
2) Check and clean crankshaft thoroughly. Change crank spacer (if applicable).
3) Use 320 grit sandpaper or Emory cloth to remove any metal shavings on crankshaft.
4) Check converter for any damage that may have occured during shipping.
5) Pre-fill converter with a minimum of (1) quart of transmission fluid.
6) Clean all paint off the pilot using 320 grit emory cloth.
7) Apply grease, not transmission gel, on the pilot.
8) Check flexplate for cracks and be sure there is no more than .006" run out.
9) Make sure all engine dowel pins are in place and clean.
10) Make sure all electrical ground straps are properly connected.
11) Never, Never use an impact gun to install torque converter bolts. Driving a bolt into the converter cover will create a dimple on the lockup apply surface. Lockup clutch failure will occur when the lockup piston applies against and uneven surace. Grinding off on thread length from all lockup converter bolts is recommended to avert this type of failure.