4l80e 1 2 Hard Shift



Remove the stock shift bracket from. Even in stock trim the 4L80 is hard to break. intermittent problems are a pain to diagnose but id still check again for hard codes with a GM TECH 2 before i did anything else. Your choice of shift lever (no cheap universal levers used here) 1 Piece Sfi 30. Contact Us. The 1-2 SS valve is a normally-open exhaust valve that is used with the 2-3 SS valve, in order to allow four different shifting combinations. Older transmissions had mechanical governors that consisted of springs. Gear Knob Gray Leather W Shift Lever Retainer Mt For Toyota Hilux Vigo 2kdftv. So conceivably I could be down closer to 2200rpms with a 4L80E and likely (roughly) a 1. 4L80E 2nd Gear Starts after rebuild the new bands was so hard it made my work and see if the AFL valve is stuck or the 1-2 shift valve is stuck in the. The challenge will come with the electrical systems. the car is at the tranny shop getting it installed. It shifts very hard through all the gears and especially hard on the 1-2 shift. *Hard parts additional at Dealer Prices if needed. This article applies to the Chevrolet Silverado GMT800 (1999-2006). They also supplied me with a torque converter for the 6. It is only applicable to Jake's Performance builds and customers. Many parts interchange between the 400 turbo and 4L80E. INSTALLATION VIDEO General Motors Stick Shift Kits 4L60E-S. For the car crowd, a quality transmission needs to shift hard, hold big power, and take a beating. I did a segment swap from another OS. Depending on the type of scan tool you're using (either a generic scan tool or a professional level technician's scan tool), these two solenoids will be called shift solenoid A and shift solenoid B or 1-2 shift solenoid and 2-3 shift solenoid. 03 so maybe yours is a 3. Checked for voltage at the Ign. Locate chevrolet truck for sale now online!. The 2 pink wires splice into each other and are to the same fuse. Ive had it in about a week now, Ive put about 50 miles on it, but im afraid to drive it at this point because of the 1-2 shift. I have charged the fliud (World standard) twice and can not tell any big differance. All shifts are great except the 1-2 shift. I could still kinda feel it but not to bad. Code 83- Reverse inhibit system (manual transmission). It is a 1991 Suburban, 3/4 ton, 4X4 with 244k miles. I leave it in level one for every day driving which gives nice clean, quick shifts. 0L with the 4l80e transmission. Furthermore, if there seems to be a lot of time between when the transmission exits one gear and enters another, than it's a pretty good indication of a bad shift solenoid. 4L80E 4L85E TRANSGO 4L80E-3 T34173E TRG-4L80E-3 4L85170DN. Dual feed fixes 3 rd burnup. I am having a multitude of other issues all of a sudden When I accelerate hard (in 4th or 5th), it revs high but doesn't accelerate (as if I were in neutral). Gear Shift Moves, But Car Won't Drive. Auto Trans Plug Adapter (2) Auto Trans Pressure Switch Manifold (6) Auto Trans Shift Lever (7) Auto Trans Shift Tube Lever Pin (1) Auto Trans Shifter Repair Kit (11) Auto Trans Spark Control Switch (1) Automatic Transmission (11367) Automatic Transmission Rebuild Kit (363) Electric Motor Transmission Stator (1) Manual Trans Shift Lever Bushing (5). GM Truck / Car / Van / Motorhome4 Wheel Drive 4/5/6-Speed Automatics There are two basic GM 4-Speed automatics: The light duty 700R4/4L60E found mainly in half ton and car applications, and the heavy duty 4L80E in the heavier applications. If the response is jumpy or erratic at all, replace TPS. In order to make it clear the long-tube headers, Gearstar removed 1 1/2 inches of metal off of the dust cover ear on the transmission case. automotive parts (see bookmarks) special features reference codes a - 1980 f - 1985 l - 1990 s - 1995 y - 2000 5 - 2005. The th400 (aka 3l80) is vacuum controlled whereas the 4l80e is computer controlled. Like, the whole truck would. It was fine for a wile and then started to do the hard shifting as did the old transmission. Harsh 1-2 shift on Chevy Astro Van and Suburban… GotTransmissions. Phone (844) 298-6404 E-Mail: [email protected] Here's the weird part. No check engine light on. Now comes the fun part: you can firm up the shifts in any automatic transmission. When rebuilding the transmission, I recommend that you always replace the valve body plate and install a sonnex Valve Kit TCC Regulator W/Sleeve. Then does it a. I say "shift" because it would make the 1-2 shift as you'd expect. Your choice of shift lever (no cheap universal levers used here) 1 Piece Sfi 30. Our transmission controllers are compact, packed with features, and have a built-in display for tuning as well as user-friendly software for more in-depth tuning. It was fine for a wile and then started to do the hard shifting as did the old transmission. A transmission can prompt a whining noise if the operating system has malfunctioned, the gears are not operating correctly or the transmission fluid needs to be changed. Also my EZ TCU does not shift well from 1-2. A 4L60 is a 700-R4. Mine hits the 1-2 shift pretty darn hard. Pictured below are just a few of the Updates & Upgrades that go into each 4L80E Transmission. Long drawn out story but the short version is: I swapped my 60E to an 80E. $1250 includes converter + core exchange. Shifting hard 2 Answers. The spring tension is designed with shift comfort and quality in mind, you could have too soft of a shift or too hard of a shift, and a slide -bump shift if the wrong spring is used or if you have a leak in the accumulator such as worn seal, bore or worn centering pin. Finally we have our stage 3, this is our strongest 4L85E transmission available. 5 way TRD LSD(3. 48 first gear, 1. 5L Diesel 4 Spd RWD 4X4. 0X end gear ratio)now. Checked for voltage at the Ign. The TO said to check resistance at the 2 solenoids and we did. Two Piece case, Ford and Chrysler bolt patterns) Rollerized case and rear support. Someone may have to jump in and correct me. If you have General Motors brand Chevrolet Astro Van or Suburban, or a GMC Safari Van with a harsh 1-2 shift, you have company. In order to make it clear the long-tube headers, Gearstar removed 1 1/2 inches of metal off of the dust cover ear on the transmission case. I have emailed a few manufactures of the controlers but I haven't heard back from them yet. 06 first gear which is good for initial take off but …. The 4L80e has a much more consistent feel to the 1-2 shift than the 4L60e. 1994 GMC 4l60e transmission shifting problems 44 Answers. We use the 4L85E term from the GM naming convention. The 1-2 shift isn’t as pronounced due to the gearing differences between the 700R4 and the 4L80E but this is in your favour. The 4L80e's first and second gear ratios are much closer, which yields a much more pleasing 1-2 shift. I had no history to work from. 5L Diesel 4 Spd RWD 4X4. Not sure on the drop side of the triton, but there are several transfer options over there. A 4L60 is a 700-R4. Lets first talk about the difference between a 4L60, and a 700-R4. Some parts are interchangable between the 400 and the 4l80e. makes it feel more like a streetable car than before. The 1-2 Shift Solenoid (SS) valve controls the fluid flow acting on the 1-2 and 3-4 shift valves. Any thoughts or suggestions to extend the life of the transmission and/or improve its performance?. The only thing I did different is not wire in the front input speed sensor, but I did turn all the DTC processing enablers off for it and disabled all the slip test stuff too. I am thinking this may be a simple flag in the OS to disable the 3-2 solenoid, disable the TCC Enable solenoid, and change the shift solenoid configuration. This will firm up 1-2 light throttle shifts. com online experience. Well i'm almost done with the 4l80E trany, redid the valve body to a full manual shift, it uses a vacum module of a 400 for increasing line pressure so i will be instaling a vacum pump set up like 1009, also got a deep pan need to modified a line inside so it sits flush is out of a later 99 or newer 4l80E i belive, will try this for a while and if i do not like it will go back to a normal. ez-tcu with 4l80e issues Also the truck shifts from 1-2 like a race car ajd will snap yiur neck. Text Us (740) 420-0004. Ive seen tranny shops around here that sell 4L80e's rebuilt for cheap, like 6-800 range. I'd not on my Suburban's 4L80E. Like, the whole truck would. Ended up changing the 1-2 and 2-3 shift solenoids and that fixed it. It is recommended that you replace both of these solenoids at the same time as they tend to go bad together. This set contains the two 4L80E transmission shift solenoids found in the valve body. Box is the easy bit. 265 75 16 tires about a 31 inch tire Just got the truck about two weeks ago, when first started up from cold as long as i don't get on the gas too much i can go forever without hard shifts as long as i dont stay in OD too long. It renews the warranty. Having a hard time finding Chevy Automatic Transmission online? Locate Chevy Automatic Transmission on sale here with the largest option of Chevy Automatic Transmission anywhere online. Let us know what you think! Please use our Contact Us page for issues that require a more immediate response. If one or more solenoids are bad, you may lose the use of one or more gears, and may even be stuck in one particular gear or unable to shift into any gear at all. thanks for the help. This can be caused by wear of the bore for the TCC isolator and regulator valves in the valve body. That was my original plan, between my headers and pipes I don't have enough room for a linkage style shifter. If you are making a lot of horsepower, you will have excessive slippage on the 1-2 shift with a Kevlar band. Seems simple enough, if if could be custom configured. Now when at light to mid throttle, the shifting between all the gears is nice and easy almost not even noticeablebut at full throttle, the 1-2 shift delays a bit then kicks like a mule (I mean if you were holding a drink in your hand even with a lid it'd probably spill), 2-3 shift. Long drawn out story but the short version is: I swapped my 60E to an 80E. Chevy only built 464 of these trucks. And finally, we offer our upgraded Extreme Duty Street/Strip series 4L80E that is rated for use at 1,500+ horsepower. 2L kit with 2 GT3240 turbos and 980HP in dyno(1. GM 4-Speed Automatics 700R4/4L60E/4L80E There are two basic GM 4-Speed automatics: The light duty 700R4/4L60E found mainly in half ton and car applications, and the heavy duty 4L80E in the heavier applications. 0L with the 4l80e transmission. It will shift fine if you let. The 4L80E transmission is known for sensor problems. FOR GM 1991 and up. neutral safety switch. and the 4L80E has two speed sensors, an IN and an OUT. Many parts interchange between the 400 turbo and 4L80E. Re: 4l80e -vs- 700r4 weight difference lol, yea i am kinda digging the softer shits when im barely on the gas. Look on craigslist if it needs to be replaced. No code setting while 1-2 or 2-3, it only repeatedly did it once settled in and cruising along. 7L Vortec, 4L80E, and NP205. 3-4 is like butter, the only reason I can even tell it shifts is because the rpms drop. Located at Bills Auto Salvage in Conesville, Iowa. The 4L80e has a much more consistent feel to the 1-2 shift than the 4L60e. If it's not shifting or shifting inconsistently, it's possible. It only shifts well if I go to WOT from a stop then everything shifts ok. Only happens on medium acceleration. 0 in 1/8th to 7. The th400 (aka 3l80) is vacuum controlled whereas the 4l80e is computer controlled. An automatic transmission is a hydraulic pressure driven system that can make different noises than manual transmission problems. These Are 100% New AC Delco / Delphi OEM Factory Dealer GM 4L80E / 4L85E Shift Solenoids. Includes motor mounts, frame brackets, transmission crossmember, transmission mount, and hardware. 1994 GMC 4l60e transmission shifting problems 44 Answers. Cancels all automatic shifts - puts the driver in control of all shifts by moving the shift lever. Re: 2000 Year, Chevrolet, C3500 4L80E Transmission? RogerJetBoat 454, So you don't think that my pass threw connector wet with automatic transmission fluid is not causing and issue with overdrive kicking out and going into limp mode once in a while. A Brand New 4L80, 4L80E & 4L85E valve body. I am making up the shift linkage w/ the LOKAR shifter and shift position system, and have run into a 'snag". US Shift Electronic Transmission Control Systems let you take charge of your 6R80, 4R70W, E4OD, 4R100, 4L60E, or 4L80E transmission and unlock its true potential. automotive parts (see bookmarks) special features reference codes a - 1980 f - 1985 l - 1990 s - 1995 y - 2000 5 - 2005. The Novak Guide to the GM 4L80E Automatic Transmission Introduction. We thought this was a high miles problem, but find that it can happen in really hard hot service at any milage. The 4L60E has suddenly started to make a very hard 1-2 shift. Almost scary hard, depending on what rpm you hit it at. Hard Parts - New - Used - Rebuilt 4L80E 4L85E 350 350C 700R4 4L60E 400 Thread In Cooler Line Fittings 2 Piece Kit TH350 TH400 4L80E External Seal Up Kit With. This firms up the 2-3 shift. 4l80e is a good tranny. Then later on in the day it was shifting way later and very hard (like barking the tires at part throttle) and it got worse the warmer the trans got. If it's not shifting or shifting inconsistently, it's possible. Page 1 of 2 1 2 Last two days been having a hard shift from 1-2 2-3. Force motor malfunctioning. *7 days a week. Sounds like you have a shift solenoid hanging up. Shifting hard 2 Answers. at the bus garage. Not even hard to get to- external mount about 2 o'clock position looking from the front. The 4L80e is like an electronic version of the old Turbo 400 with an overdrive. ailing transmission. and the 4L80E has two speed sensors, an IN and an OUT. Eliminates Soft 2-3 Slide. Buy D Transmission. She took it to a shop where she said. but 2 batteries , you can drive it for a week on 11. I did NOT block off the accumulators but do have the springs that go in them for the HD2 kit. Shift kit, corvette servos high end torque converter etc etc. the alternator was 8- 9 years old - failed. 48 first gear, 1. Car and Truck Parts by Make and Model. I'm suspicious that its something pump related since higher rpms lead to higher temps, regardless of airflow on the coolers. Subscribe to Our Newsletter to get Important News, Amazing Offers & Inside Scoops:. I'd not on my Suburban's 4L80E. Now I'm thinking paddle shifter, from reading Twist Machine site all I need. My original OS did not support an 80E. The Novak Guide to the GM 4L80E Automatic Transmission Introduction. ) Visit - Scan PCM Step 2 - Start the engine and observe the MIL, if it does not illuminate continue to next step (service engine soon or check engine light. Sloppy Mechanics Wiki 4l80e sloppy transbrake (3rd gear spool mod) Now, I had alot of help getting this working from LS1 tech members and tons of info from a trans guy, wanted to let you know that first! thank you for the community for helping me out, i wired it in, tested it and ill show you how i did it. Our 4L80E has undergone a complete overhaul addressing industry and customer concerns. Weak or broken pawl return spring. 7, Trans shifts hard from 1st to 2nd and sometimes shifts hard going into drive. Today’s customers demand a transmission which shifts smoothly, is durable, and delivers excellent fuel economy all at the same time. Force motor malfunctioning. If it hits hard then I may look farther into it. The video shows the replacement of the 1-2 shift accumulator after the pin is worn allowing pressure blow by of transmission fluid, causing hard shift condition that does not really get worse over. here we will give you some simple and inexpensive or just free upgrades you can do to improve the shift characteristics of your 4L60E transmission. I can restart the car and it will work until the next stop. Specializing in vehicles equipped with the 6L80/90 transmission, the 8L90 transmission, and the 6T70 transmission. Vehicle must be under 4 mph to allow reverse operation. It will hold parts in place longer under warmer conditions like summer heat and is for use with automatic or manual transmission assembly. TPS is good. It shifts very hard through all the gears and especially hard on the 1-2 shift. Thank you Monster Transmission. Ok it strikes again, 2 & R is all i have again. TCI Tech support says that RPM is ignored at any throttle setting below 80%. 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. With the broadest product offerings and a unique ability to offer cutting edge technology and features, along with the peace of mind associated with cooler charge air temperatures and outstanding engine reliability, ProCharger has you covered. has all four gears but no lockup Has code Po894 slipping components will turn on chek engine light after a while. 3 and 4l80e you will want to find a computer from a 00-05 3/4 or 1 ton truck that has a 6. If I accelerate from a stop using 50% throttle it will not shift into 2nd gear. 7L) engines. and if your vehicle seems to not shift at the right time or shifts very hard. I've checked fluid levels and condition, both are normal, fluid not burnt, nothing abnormal in the trans/engine mounts or u-joints. Some of these have been replaced or work together with electronic controls. I have read what threads I can on this and can't seem to solve the issue. My 99 1/2 tond did that a couple of times. DO NOT use a plastic piston, they break. The 2WD 4L80E must have a 6-1/2" slip yoke output shaft. It should be back together quickly, but I guess now I can fix any former issues I had with clearances at least. This is to help against having these problems in the future. For the car crowd, a quality transmission needs to shift hard, hold big power, and take a beating. First, the ratios are closer for 1 and 2 on the 80, and second the 4L80e 1-2 shift is a clutch engagement rather than the band engaging on the 60, or at least that's how I remember it. 4L80E Shift Solenoid " A " Hard Wire Type 1998 To 2003 - See More Info 2 A/C Delco New Shift Solenoids Fits All 4T65E Models 2 required per transmission. Reduces Low Pressure Due To Solenoid Filter Break Up. Displaying products 1 - 30 of 97 results Show: 30 60 90 200 Sort: Default Price Low to High Price High to Low Name (A-Z) Name (Z-A) Rating Low to High Rating High to Low Newest. Page 1 of 2 1 2 Last two days been having a hard shift from 1-2 2-3. Since these are turbo motors they absolutely love to be loaded down to make the big tq. Built with upgraded internals and mild shift kit can handle 600+hp with ease. Installation and Operation Manual for 4L60E, 4L65E, 4L70E, 4L80E, and 4L85E transmissions. Now comes the fun part: you can firm up the shifts in any automatic transmission. Two Piece case, Ford and Chrysler bolt patterns) Rollerized case and rear support. 00 third, and 0. 1994 GMC 4l60e transmission shifting problems 44 Answers. Page 1 INDEX 4L80E 2nd Printing Before & After Service Complaints. Page 1 of 2 1 2 Last two days been having a hard shift from 1-2 2-3. It will shift fine if you let. I think I may remove more torque management (or all of it). Suburban 1500-2500 1995-2007 V8 6. Once I am above 2nd gear the others shift properly. In order to make it clear the long-tube headers, Gearstar removed 1 1/2 inches of metal off of the dust cover ear on the transmission case. Here's the weird part. By activating and deactivating the solenoids in a predetermined pattern by the PCM, 4 distinct gear ratios can be achieved. Gear Shift Moves, But Car Won't Drive. This 4x4 is very unique and rare. I later found a shift rod from a '91 burb with a 4L80E and used that. Our stage 1 4L80E is adequate for the majority of street rods with around 500 hp. I'm having shifting problems during hard acceleration from a start and when tring to accelerate when already at a speed when the transmission downshifts. The 1-2 shift is pretty hard. Inconsistent Shifting- Often when a shift solenoid goes bad in the 4L60E, it'll cause a lot of erratic shift behavior. There are no check engine lights, speedo works, torque converter is locking and unlocking appropriately, and the tranny shifts normally and correctly (except for a delayed shift from 2-3 when cold). Just a shot, I'm pretty rusty on the "E" tranny stuff. My 03 Silverado with the 4L60E has a hard 1-2 shift. Troy Trepanier took a Chevy Nova, added a 572 cubic inch V8, a Procharger supercharger, blacked out everything and called it Notorious. Eliminates Missing Shifts With No Diagnostic Codes Includes Modified Performance High Quality Pump Boost Valve And Sleeve (sometimes called bushing / valve ). 2 US Shift Transmission Control System instruction and operation manual. I'm looking for a little info on my 4L80E trans that will not move. 6l80etuning. I can restart the car and it will work until the next stop. 0 V8 engine. 4L80E hard shift 1-2, falling out of 2nd ??? Dave here, questions concerning the trans in my 94 K3500 diesel. Remove the stock linkage and bushing from the steering column’s shifter bracket. I would really like to be able to enable the ICF and custom configure the inputs and outputs. Automatic Transmission Shift Position Sensor Switch Products. It does not include the converter cut and clean, or hard parts. Holds 1 st and 2ND at any RPM. Shifting A TH400 Discussion in ' and then places another neutral at the end of the shift pattern (P-R/N-1-2-3-N). Circleville, OH 43113. 4l80e transmission shifting problem, very hard shifting after exteneded periods of driving. & thats all she wrote, dropped the pan to. I have a problem with my 4l80e transmission. In a car, in a heavy truck or heavy car the input shaft has been known to break, also hard shifts into second will roll the 1,2 sprag. My goal is highway racing frequently and 1/4mile racing somtimes,the 4l80e kit is my best choice?. Modern transmissions shift so softly and smoothly that we often forget they are even working. On medium acceleration, the tranny shifts HARD from first to second. 0 V8 engine. I just put a 4L80E in my 67 Chevelle this weekend. Trans has been serviced regularly, fluid is always clean, no burning smell, noises, etc. 48 second, 1. Built with upgraded internals and mild shift kit can handle 600+hp with ease. It has 105k miles. It was fine for a wile and then started to do the hard shifting as did the old transmission. Both shift solenoids are turned on in 1st gear and to shift into 2nd gear the shift solenoid A turns off, causing the 1-2 shift valve to release and redirect pressure to the 2nd gear servo which applies the 2-4 band. Esp E-Ⅱ Stream Fm Stblk Jazz Bass Type Electric Bass Guitar With Hard Case. The valve body kit is intended to modify a properly functioning transmission, not to repair a problem. Twitter Facebook YouTube Instagram. Why does my transmission shift so hard after I have been driving for a while? My rig is a 1997 Chevy 1500 Silverado z71. No other gears, no other issues at all. 8L, 4l60e 4x4 1/2 ton trucks upgraded unit HD Monster Style Lots of upgrades including 5 pinion low oem planets. 75:1 overdrive ratio. A 4L60 is a 700-R4. My goal is highway racing frequently and 1/4mile racing somtimes,the 4l80e kit is my best choice?. 4l80e transmission shifting problem, very hard shifting after exteneded periods of driving. It does not include the converter cut and clean, or hard parts. Without a valid speed signal from these sensors, the PCM will not be able to correctly control the shifting of gears within the transmission. Almost scary hard, depending on what rpm you hit it at. I replaced the 1-2 shift solenoid in my 88 Silverado because it was shifting hard, the spring was broke inside, I changed the fluid, there was almost no metal on the magnet so there was no internal wear, I also put a sealant in with the fluid. Finally we have our stage 3, this is our strongest 4L85E transmission available. Enjoy! This post has incorporated lots of pics and knowledge originally contributed by other members. I just put a 4L80E in my 67 Chevelle this weekend. 250") are made out of tough, wear-resistant imidized plastic. Need a little advice on a 4L80E repair. 4l80e Transmission Problems » this is images about 4l80e transmission problems posted by Maria Rodriquez in 4l80e category. However there is a bit of work to it, you need the adapter for a TH400 to NP205 as you know hard to find. Sine I have 3. Discussion in 'GM Powertrain' started by beyondhope, Apr 15, 2009. Someone may have to jump in and correct me. a and it will bolt right up, try to find them in a boneyard someplace. The 2WD 4L80E must have a 6-1/2" slip yoke output shaft. what i was able to do with mine in hp tuners which i loved was set it to tps position. Here's the weird part. Just started having problems after up to temp during 1-2. It has about 230000 miles on it and I just had the transmission rebuilt because the fluid was badly burnt and it was slipping in 3rd and 4th gears. It has a built PTC trans with a triple disc conv. Force motor malfunctioning. For any W Harness questions. After being on the highway in OD for 7-15mins almost always shifts hard from that point on, after it starts shift. Lets first talk about the difference between a 4L60, and a 700-R4. Level 2 adds a kick that's a bit too hard for everyday driving , but good for. Have a 2005 Silverado 2500HD 4x4 6. This type of valve body allows you to safely. so i would go to tps and from 0 to 25% i. Like, the whole truck would. Buffalo Engine Components Inc (BEC) is a multi-faceted family owned and operated corporation. If it sits for a couple hours it will shift normally. Long drawn out story but the short version is: I swapped my 60E to an 80E. what i was able to do with mine in hp tuners which i loved was set it to tps position. An automatic transmission is a hydraulic pressure driven system that can make different noises than manual transmission problems. ati, reviews, rossler, tci, transmission Which transmission trans wont shift at full throttle, bad summer for the cherrybomb ,( WTB - Transmission Control Unit for a 4l60e. I was having the hard shifts between 1st and 2nd, as many others have described. but 2 batteries , you can drive it for a week on 11. She took it to a shop where she said. I need to reach out to you guys to see if anyone else has ever experienced a pressure drop between the 1-2 shift on their 4L80e and found a solution. It has 105k miles. You have a 1991 Chevy pickup your problem is the transimission 4l80e its shifts into first gear feel hard A couple things can cause a computer controlled auto transmission to shift hard: 1. Everything You're Looking For, Right Here! Promoting an array of prices on Chevrolet Truck and other similar listings. plus i drove it almost 2 years with it banging every shift, so its a welcome change. Automatic transmissions use mainline, governor, and throttle pressure valves to control and lubricate the transmission. Finally we have our stage 3, this is our strongest 4L85E transmission available. Not even hard to get to- external mount about 2 o'clock position looking from the front. Your choice of shift lever (no cheap universal levers used here) 1 Piece Sfi 30. Other shifts are slightly harder than what has been normal, but the 1-2 bangs really hard. The GSM Push Button Shifter is an electronically controlled shifter that replaces the shift lever and offers precise, split-second shifting capability with the push of a button. For a firmer 1-2 shift, install a small spring on the inside of this valve. but 2 batteries , you can drive it for a week on 11. 2L kit with 2 GT3240 turbos and 980HP in dyno(1. these are not "race car" upgrades but ones that will work for your truck or street hot. Mine hits the 1-2 shift pretty darn hard. but thats pretty easy. Long drawn out story but the short version is: I swapped my 60E to an 80E. Find TransGo Performance Shift Kits 4L80E-3 and get Free Shipping on Orders Over $99 at Summit Racing! TransGo's Performance shift kits give you the hard-launching, tire-blazing shifts you want, after just a few hours' work with basic hand tools. It seemed that I needed to be above about 30mph for the 2-3 shift to kick in.