No overdrive 4l60e

The 4L70E is a 4-speed automatic GM transmission with up to 5 gears, including reverse. The 4th gear of the 4L70E is a .70 overdrive. It also shares the same basic design - and case - with the 4L60E and the 4L65E. This 4-speed automatic transmission is designed with considerably lightened materials to support much better fuel efficiency ...

No overdrive in 4L80E until 200 degrees. Hello everyone. I'm a member of a few forums and feel that this one will help me solve my problem. My 94 Sierra crew dually with 6.5 TD has no overdrive until it reaches around 200 degrees on the temperature gauge and then it will engage O/D. After that I have O/D all day as long as the operating temp ...Re: i have a 95 silverado c1500 with 4l60e trans and it... Overdrive is the fourth gear.D1,D2,D3,D4 now drive truck at 80 kmh cruise at steady speed no fuel pedal movement, downshift from D4 to D3 you should feel RPM raise .. after push brake pedal a little you should see RPM raise 300 to 400 rpm. shift pattern is 1st gear ,second gear,3rd gear ...On a mildly chilly morning, my 95 c2500 6.5 TD (4L80E) reversed 2 feet and all of a sudden, felt like a fuse popped. No reverse now -not even a hint of reverse. All forward gears work perfectly. The fluid was brown and low. I drained the pan, replaced the filter, filled it back up. Still no reverse. Drove it for about 3 miles, pan was leaking.6L 80 · 6L 90. The 4L60E (and similar 4L65E) is a series of automatic transmissions from General Motors. Designed for longitudinal engine configurations, the series includes 4 forward gears and 1 reverse gear. The 4L60E is the electronically commanded evolution of the Turbo-Hydramatic 700R4, originally produced in 1982.Let us have a look at the systems and potential problems in a 4L60E that can cause a harsh 1-2 shift. 1-2 Shift Control Functions: Failsafe operation. Line pressure control problems. Accumulator valve system. Servo apply area. 1-2 accumulator piston and spring. #8 check ball, 2nd gear feed orifice. Servo cushion spring.4l60e clutch replacement..in this video shows how to reassemble parts and clutch of 4l60e automatic transmission #chevy#gm#tahoe.When driving it is like you have shifter in low. You have to let off the gas any let it go straight to 3rd. When your in 3rd and mat it and it downshifts it's like you when to netrual. You never feel the trans attemp to shift to 2nd or 4th. I've replaced both shift solenoids and check 2-4 servo.4L60E Bench Test & Flush all solenoids GMH GM Holden Commodore Omega 4L60E 4L65E Auto Trans Transmission Gearbox stuck in Limp Mode Limp Home Mode ( 3rd Gear...

Adam McCann, WalletHub Financial WriterMay 29, 2023 Adam McCann, WalletHub Financial WriterMay 29, 2023 #9 Hotel Rewards Program Opinions and ratings are our own. This review is no...4L60E Shifting Issues. I have a 2000 1500 w/ a 5.3 and a 4L60E. I had the transmission rebuilt 20k miles ago, about 400 miles post rebuild I ran into a 2-3 slip (same as before the rebuild), though mostly at low engine speed. The builder thought it was an electrical issue, I lived about 2 hours away and didn't drive it often (at the time), so I ...4L60E shift problems. With no previous transmission problems, I was on a recent trip and I noticed the rpm on my tach was running about 2500 rpm at 60mph in overdrive (normally runs in the 1700-1800 rpm range at this speed). I manually downshifted to 3rd gear then back to overdrive but rpm remained at 2500. I continued at this pace for about 6 ...242 posts · Joined 2003. #1 · Feb 4, 2016. I made a couple orders from a couple different venders and eBay for some parts to over haul our 4l60e. We have a 1994 Chevrolet Suburban. It is a 1500 so it has a 350 and a 4l60e. The truck was bought new by my dad and run for about 170k by him. He isnt fanatics about maintenance but it got taken ...Bad Sprag. 4L60 E Sprag. If you end up with a bad sprag, the 4L60E won’t be able to shift into 3rd or 4th gear. It provides a direct connection between the input housing and the input sun gear. Without being able to lock, it won’t be able to facilitate the transfer of energy to the upper gears and the transmission will remain in 2nd gear.

The 4l60e torque converter is designed to lock up primarily in 4th gear (can also be enabled to lock up in 3rd gear as well), so when it doesn’t lock, it’s quite noticeable. When a converter locks, it lowers the RPMs and usually feels like going into another gear. When it doesn’t lock however, RPMs will keep climbing in 4th gear.Slips into 3rd, no 4th. I have a 2009 chevy silverado with the 4l60e trans, 4wd. I have been having problems with it not wanting to shift into 4th. I recently smoothed out the 1st to 2nd shift from changing out the trans fluid, which was a little bit dirty, but not bad. I also have 3rd gear now, but it slips into 3rd. No 4th gear though.Valve Body Issues- A bad valve body can make the reverse gear not work in the 4L60E. If the valve body ends up warped, or if the gasket fails, it’s entirely possible that the gear won’t engage. Booster Valve- A bad booster valve can leave you without reverse in a hurry. Sun Shell- A broken sun shell will cause the 4L60E to lose reverse.Tranny on my 2000 GMC C3500 would work fine until worm, at which point I'd lose overdrive (4th gear) and would get a jerky shift from 1 to 2nd and 2nd to 3rd...New London, MO. I have a 1994 Chevy K1500 5.7/ 4L60E. trans was rebuilt 12000 miles ago with all new raysbestos clutches, electronics, and even an aftermarket cooler half the size of my radiator. Since the rebuil the trans has worked flawlessly. i havent pulled anything in OD just in 3rd. But to the point i was driving down the road and the ...

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The 4L60E has a 3.06 ratio in first gear, which is 20% lower than most transmissions. The 30% overdrive will give a 30 to 40% increase in gas mileage on the road when compared to a 3-speed transmission. The 4L60E is a popular transmission swap for muscle car restorations to add the overdrive option & to update to a modern transmission.Is 4L60E 3 or 4 speed? Usually found in GM rear-wheel drive vehicles, the 4L60-E is renowned as a reliable and strong transmission.It has been used throughout many generations of General Motors vehicles and has become an iconic part of automotive engineering. This amazing piece of technology combines a four speed overdrive automatic transmission with electronic controls to provide crisp shifts ...Three of the most common problems of a 4L60E transmissionYou had an injury or disease in your digestive system and needed surgery called an ileostomy. The surgery changed the way your body gets rid of waste (feces). You had an injury or ...

I have 95 sierra. 5.7/4l60e Bought it with No 1st or 4th gear thinkingit was a solenoid,. Ive replaced the solenoid with no luck as well as the ignition switch, transmission, and all the external sensors on the engine and trans. Ecu is reading 12v in park, and 12v in 1st. I can ground the shift solenoid A wire to the body get get 1st back.The 3rd accumulator checkball is open in 2nd gear and allows the 2nd servo to move and engage the 2-4 band. When the unit shifts to 3rd gear, pressure is applied to the release side, or 3rd accumulator side of the 2nd servo. This closes the 3rd accumulator checkball and forces the servo back releasing the 2-4 band.The 4L60E is one of General Motors' most versatile and durable 4-speed transmissions. It was formerly known as Turbo-Hydramatic 700R4 and is currently the electronic version that is popular today: 4L60E. General Motors manufactures the remarkable 4L60E in Romulus, Michigan, and Toledo, Ohio. In 1982, General Motors initially conceptualized ...Slips into 3rd, no 4th. I have a 2009 chevy silverado with the 4l60e trans, 4wd. I have been having problems with it not wanting to shift into 4th. I recently smoothed out the 1st to 2nd shift from changing out the trans fluid, which was a little bit dirty, but not bad. I also have 3rd gear now, but it slips into 3rd. No 4th gear though.Also any connector not seated properly can cause a no shift condition. A scanner would be real helpful as this trans is shifted by the computer and you need to see what the computer is doing or not doing. No VSS, a mis-adjusted MLP, a pinched wire harness in the bell housing, a blown fuse can all cause this problem. Jim. 2004 SILVERADO 2500HD LS.This is actually a fairly common problem with the 700R4/4L60E overdrive transmissions but luckily the solution is also relatively easy. You didn’t mention what vehicle this is in, but the solution is still the same. It sounds like the torque converter clutch solenoid has stuck or failed in the open position.Make It Better: 4L60E Swap For 1967-1972 Chevrolet C10s. Phillip Thomas WriterOct 11, 2017. See All 30 Photos. The GM overdrive transmission swap has been covered ad nauseam, and to be fair, it ...The 4L60e is a smaller transmission, with a total weight of around 135 pounds and dimensions of 30 inches in length, 11 inches in width, and 14 inches in height. In comparison, the 6L80 transmission is smaller and lighter, with a weight of around 160 pounds and dimensions of 30 inches in length, inches in width, and 10.5 inches in height.No TCC Lockup - 4L60e. This trans is in a LS2 powered Blazer running a 2007 TrailBlazer SS E67 ECM. I have tried everything I can think of and read about to make this thing lock but, it won't! I can force lockup using a scanner - …Maintenance/Repairs. transmissions, s-10, chevrolet. Garry_B May 15, 2010, 1:12pm 1. Had transmission rebuilt. since then the truck will drop in and out of overdrive around 40. this is only after 30 min of driveing on warm days and when very slightly accelerating, like keeping up with traffic on a slight incline. if I hold the gas pedel steady ...4l60e no third or drive. 1 & 2 work fine- in overdrive the engine revs going to 3rd-let off gas & it shifts, but no 4th gear. Will not shift to third in drive at all. I changed the shift solenoids (both) and the VSS- still not shifting properly. No metal in the pan when I dropped it- fluid at bottom of pan was thick and sludgy.

4l60e transmission cooler line came off, lost fluid, went limp, filled it back up, drove for a week and now it wont shift to third. 2004 trailblazer 350k miles. i do all my own work, but i have no idea what i am doing most of the time. i just research a great deal before i start anything and normally can solve all problems.

When this happens then the shifting valve returns. No electricity sent means no gear. The two shifting solenoids will engage like this: 1-2 energized for first gear. No solenoid for second gear 2-3 energized for third Both 1-2 and the 2-3 for 4th gear. Yes 4th gear. Problems with no overdrive can happen because faults associated with these two ...Location. New Jersey. I just finished rebuilding my 4l60e trans and am having issues. The truck is a 1996 K1500 and I am the original owner. A little history of the …Usually, when the 1-2 shift failure occurs on a 4L60E transmission, it is due to a malfunctioning throttle position sensor (TPS). To determine if the TPS is causing the issue, it should be tested for any abnormalities. During testing, there should be a linear electrical response throughout its range of motion.The 4L60E is one of General Motors’ most versatile and durable 4-speed transmissions. It was formerly known as Turbo-Hydramatic 700R4 and is currently the electronic version that is popular today: 4L60E. General Motors manufactures the remarkable 4L60E in Romulus, Michigan, and Toledo, Ohio. In 1982, General Motors initially conceptualized ...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. 700R4/4L60E’s have a low 3.06 first gear which is good for initial take off but this makes the transmission have the widest ratio … Continue …Dec 23, 2017 · 4l60e no third or drive. 1 & 2 work fine- in overdrive the engine revs going to 3rd-let off gas & it shifts, but no 4th gear. Will not shift to third in drive at all. I changed the shift solenoids (both) and the VSS- still not shifting properly. No metal in the pan when I dropped it- fluid at bottom of pan was thick and sludgy.6. No 3rd or 4th gear: "3-4" clutches are worn out. R&R. The car is safe to drive (in 2nd if you have no 3rd) until you can get it fixed. R&R = Remove & Repair (or Rebuild) = Transmission must be removed to fix the problem and may have to be rebuilt or replaced. S.The 4L60E is one of General Motors' most versatile and durable 4-speed transmissions. It was formerly known as Turbo-Hydramatic 700R4 and is currently the electronic version that is popular today: 4L60E. General Motors manufactures the remarkable 4L60E in Romulus, Michigan, and Toledo, Ohio. In 1982, General Motors initially conceptualized ...Maintenance/Repairs. transmissions, s-10, chevrolet. Garry_B May 15, 2010, 1:12pm 1. Had transmission rebuilt. since then the truck will drop in and out of overdrive around 40. this is only after 30 min of driveing on warm days and when very slightly accelerating, like keeping up with traffic on a slight incline. if I hold the gas pedel steady ...Whenever you experience problems with the 4L80-E check and readjust the throttle position sensor first, always first. Thirdly inspect the passthrough connector pins. No leaking, bent or pushed in pins. Fourth check the 1-2 and 2-3 shifting solenoids with a DVOM set on ohms.

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CarParts.com. Since you have the 4L60E computer, you might first make sure the computer is energizing the 2-3 solenoid when shifting into 3rd gear. That solenoid must be energized for fluid to flow to the third clutch. There could also be an issue with the direct clutch assembly, but it seems as though you would also have problems with 4th and ...Remodeling or renovating your home is always a learning experience, but sometimes what you need to learn is how to cover up your mistakes. Remodeling or renovating your house yours...Make It Better: 4L60E Swap For 1967–1972 Chevrolet C10s. Phillip Thomas WriterOct 11, 2017. See All 30 Photos. The GM overdrive transmission swap has been covered ad nauseam, and to be fair, it ...125. When you blow the trans fuse the trans will take off in 3rd gear.you need to drop the pan and ohm all the solenoids. I don't have all the specs in front of me but can get them for you tomorrow.most likely it will be a shift solenoid or the 3-2 control solenoid. Let me no if you need more info. Greg.Ed Lee. A 2006 Chevrolet Suburban C1500 was brought to a transmission shop. The vehicle was equipped with a 5.3L V8 gas engine and a 4L60-E transmission. The customer complaint was "slipping in reverse.". The vehicle had 128,967 miles on the odometer, so the customer was sold a complete rebuild, including a rebuilt torque converter.Wont shift into overdrive. And reverse wont work. - Chevrolet 1999 K1500 question. Search Fixya. Browse Categories Answer Questions ... 4l80e no overdrive 4l60e no 3 4 shift no reverse in 4L80E 4l60e rebuild ide failure failed clutch won overdrive ...History repeats itself when it comes to the four-speed 4L60E and 4L80E, except the gear ratio difference is even more dramatic. While the 4L80E uses a 2.48 First and 1.48 Second gear just like the ...Wouldn't it be great to see exactly how much space a kitchen island will take up before it's actually installed? Here's how to figure it out. Expert Advice On Improving Your Home V... ….

This video is for you to diagnose the problem with your 4L60 transmission when 3rd or 4th gear won't engage, we show the parts that typically are bad when yo...No matter what age your child is, it’s never too early to start teaching them the importance of financial literacy. No matter what age your child is, it’s never too early to start ...The 4L60E has a 3.06 ratio in first gear, which is 20% lower than most transmissions. The 30% overdrive will give a 30 to 40% increase in gas mileage on the road when compared to a 3-speed transmission. The 4L60E is a popular transmission swap for muscle car restorations to add the overdrive option & to update to a modern transmission.1332 posts · Joined 2003. #2 · Feb 9, 2012. c65shoebox said: Confused and there is really nothing I can do to fix this, I recently did a 4l60e for a friend. It had lost drive and overdrive. We went in, cleaned and replaced the components that are normally replaced in a 4l60E. Put in new clutches and steels, commercial 3/4 pack, converter, and ...I assumed it was just toast but then read about the many electrical, sensor, solenoid problems which could be a cause so decided to see if it was something simple before assuming a rebuild was required. Good news is I fixed a few things and shifts well in 1,2,3 but still can't get overdrive.The 4L60E is an automatic shift, four-speed overdrive transmission that has the reputation of being one of the best automatic transmissions ever made. Before the 4L60E was produced, there was another trans called the Turbo 700R4. This transmission was introduced in 1982, and the 4L60E transmission is a branch off this model.4l60e Shift Solenoid Locations. On a 4l60e, the shift solenoids are located on the rearward end of the transmission against where the pan bolts to the case. The image below shows how easily accessible the shift solenoids are once the pan and filter are removed. If you need to replace your shift solenoids, they are a pretty straightforward piece ...Recently did an ls swap and trans has no overdrive , it will throw an p1810 code , ... no 4th 4l60e codes p1810; Results 1 to 1 of 1 Thread: no 4th 4l60e codes p1810. Thread Tools. Show Printable Version; 09-08-2020 #1. TRUCK7MAN. View Profile View Forum Posts Private Message1997 GMC SIERRA. Rebuilt Trany 4L60E Scanner Code P1860 - will shift to overdrive sometimes need help with code to fix overdrive problem Joe rebuilt the transmission at work on 97 Sierra 4WDR 4L60E transmission. He drove it and it will shift to overdrive sometimes then sometimes it will not. Ran scanner test and the code comes back to P1860. No overdrive 4l60e, FIXED-4L60E loud grinding noise! Hi guys, its been a while since iv last been on here. well my truck and tranny have been running great up until yesterday. on my way out to camp all the sudden my truck starts making this awfull grinding noise. it only does it in drive once the truck reaches 10kph and immidiatly in reverse and it wont move in ..., M. moentte999 Discussion starter. 87 posts · Joined 2008. #2 · Feb 10, 2008. GM 4L60E no 4th gear.How to start root cause analyse. Dear Tranny People, I am Electric girl and need some help of mechanics to do a propper root cause analyse. My 97 Chevy Blazer 4.3L won't shift in 4th gear anymore. The engine light come on due to the no shift., 3 posts · Joined 2009. #1 · Nov 12, 2009. Just had leaking radiator repaired at local shop. replaced radiator and drove truck and noticed a brief shudder in 4th gear that is intermitten. when shift into 3rd gear manually the truck does not shudder. put back into 4th gear/overdrive will get intermitten shudder for 1-2 seconds at steady speed., FIXED-4L60E loud grinding noise! Hi guys, its been a while since iv last been on here. well my truck and tranny have been running great up until yesterday. on my way out to camp all the sudden my truck starts making this awfull grinding noise. it only does it in drive once the truck reaches 10kph and immidiatly in reverse and it wont move in ..., Opportunity Zone Funds are investments designed to stimulate growth in distressed communities. Read on to discover the ins and outs of these funds. Opportunity Zone Funds are inves..., I've got a 1994 K1500, 5.7, 4l60e. the transmission was rebuilt has power (12v). Poor take-off ( Feels like 2nd gear), wants to shift to 4th, overdrive at 20 mph, no power to the ground in D or OD. He … read more, I have a 1999 tahoe 4x4 with the 4l60e. Lost overdrive the other day, it will coast like its in OD but give it gas - Chevrolet 1999 Tahoe question. Search Fixya ... I have a 1999 dodge Durango 5.9 with no overdrive. Dodge Cars & Trucks; Open Questions: 0 answers. I need a service manual for free of a new process 246 cm transfer case for a 1999 ..., Performance Pack, Part No. HP-4L60E-01: Amazon: Skift Kits: TransGo: SK4L60E series L (1993-2002) Summit: Valve Body Mod "Special Pin" for Accumulator Bushing, allowing easier changes: TransGo: Valve Body Mod: Installed yellow spring on Low Overrun Valve: Yellow: TransGo: Valve Body Parts: Sonnax: Sonnax Heavy Duty 2-3 Shift Valve Part, No ..., C4 Tech/Performance - bad stumble in overdrive with 4L60E? - after driving to Chicago and being in stop and go traffic all day when the highway opened up so I could get up to 60 or so I was thrilled but we slowed to around 45-47 and the RPM were at 1000 and it bucked hard when given any gas. put it in D and no..., this video is a test drive showing how to check the 2nd and 4th gear, 1994 Pontiac Firebird Formula 5.7 LT1 4L60. Stays in third gear all the time and only lets me manually downshift to second. could both solenoids be bad or in limp mode. transmission was rebuilt 2 months ago. Fluid full and clean. New ignition switch., 4L60E Piston Overdrive Clutch. In the 4L60E transmission, the pistons work as part of the clutch pack, activating when fluid pressure is applied and locking the unit together so the wheels can be driven. When pressure ceases, the piston will disengage and the wheels will stop turning. The pistons that are provided each have a different location ..., This is a late model 4L60E also known as a 4L65E, compatible with LS style engines rated up to 500hp/450tq, identified by having a single bolt-hole at the very top of the bell-housing INCLUDED FREE - No Fault Warranty A 1-time no questions asked repair or replacement. ... The 30% overdrive will give a 30 to 40% increase in gas mileage on the ..., When this happens then the shifting valve returns. No electricity sent means no gear. The two shifting solenoids will engage like this: 1-2 energized for first gear. No solenoid for second gear 2-3 energized for third Both 1-2 and the 2-3 for 4th gear. Yes 4th gear. Problems with no overdrive can happen because faults associated with these two ..., My 2006 z71 was in limp home mode. changed 1 fuse fixed all the problems. BTSI fuse, The 4L80E is a descendent of the proven TH400 transmission design. It is very rugged, has much more potential for power capacity than any other overdrive transmission on the market. It has better power flow for big power applications, much more clutch capacity and apply area than the 4L60E. Simply put, from a design and engineering perspective ..., If you’re a book lover who is always on the lookout for new titles to devour, then you’ve probably heard of NYPL Overdrive. NYPL Overdrive is an innovative platform that allows lib..., Should Cape Cod become Cape Wind? The Atlantic’s powerful bluster twirls thousands of wind turbines off the coast of Europe, sending gigawatts of renewable energy coursing into the..., Don't go with a turbo 400. Do a well built 4l60e or a 4l80e. The th400 has a shorter first gear which will make it harder to get going on those 35's and to run 70 mph on those tires with that gear you'll be turning 3500rpm roughly compared to the 4l60e's 2200ish. oh and no converter lockup on the th400 either. Feb 6, 2018., 95 GMC Jimmy 4L60E no 2nd or OD 4L60E. 95 GMC Jimmy. 4.3w engine, Mid size SUV. Has 1st and 3rd and reverse. Strong in these gears but no 2nd or OD. Replaced shift solenoids but same problem. Seems to lock up converter in D when on highway. Have run this truck a year with only 1st and 3rd, towing everything imaginable without any problems ..., 4L60E transmission slipped out of overdrive while driving but continued to drive. When put into park, transmission has no foreward gears. It does go into reverse. ... 1994 Chevrolet silverado 1/2 tonXXXXXextra cab with a 5.7 litr. and a 4l60e auto trans. It has no forward gears, ..., 4l60e overdrive shudder. So, I recently replaced my old worn out 5.0 in my 1993 K1500. In doing this I "upgraded" to a 5.7 and replaced all of the contributing parts that I could find would be connected in some way to this upgrade. I have changed out the ECM to one out of a 1993 K1500 that had the 5.7 and 4l60e just as my truck does now., The GM 4L60E transmission, also known as the 4L60E Automatic Overdrive Transmission, is a popular transmission model used in many General Motors vehicles. It is a four-speed automatic transmission that was first introduced in the early 1990s. This transmission is known for its durability, smooth shifting, and versatility., 4l60e no overdrive, It means something is wrong with the fluid or maybe the clutch system in the transmission. The transmission goes mad, the speedometer reads zero. This is a problem with some sensors like VSS, for example. Its readings are superbly important for the proper work of the transmission. 3rd and 4th gears are missing., This is a good example of why we focus on pattern failures and address the problem accordingly., Splitting the Circuits. When dealing with 4L80E transmission and no reverse, start by hydraulically splitting the circuits. Check the line pressure, especially during individual shift failures, to see if it’s out of specification. Perform the pressure test in the specific gear where the issue is present., Chevy Mechanic: PabloH108. No problem, you can ignore the phone call prompt is automatic from the system. What you want to do is check the level using the transmission dipstick while the engine is running and its hot. If there is no dipstick then usually they have a level plug., The corvette servo will give your 4l60e 50% more apply pressure, meaning it will allow for a much firmer shift. This helps prevent the transmission from slipping under heavy load, such as racing or towing, and is highly recommended for any high performance application. The servo upgrade will be qui te noticeable with faster 1-2 and the ..., Intermittent drive and overdrive in 4L60E. I had a tranny rebuild done a year ago, and rear end build 2 months ago. Everything was working fine and had been for 6 weeks. Even a couple of fun runs down and 1/8 mile drag strip. Everything worked fine even after that. All of a sudden, i lost drive and overdrive. First thing i did was checked fluid., Common failures on 4L60E, problems any possible repair Problem Symptoms Possible repair Slow, slipping or no reverse "lo-reverse" clutches are worn out, fluid leak in the reverse apply circuit, or broken sunshell.. May also have worn boost valve. It is possible to remedy a fluid..., Overview of GM's Stronger 4L65E Transmission. The 4L65E transmission is built for Chevrolet, as an improved iteration of the 4L60E, and a successor to the 700R4. Unlike its predecessors, the 4L60E and later 4L65E is an electronic automatic transmission, with a five-pinion gearset, overdrive, and a stock torque limit of about 380 ft.-lbs. torque., 1 post · Joined 2012. #1 · Jan 18, 2012. 2004 SUBURBAN c1500 4L60e will not shift automatically while in drive or overdrive, starts out fine but will not shift at shift points and just keeps revving no shift almost seem as it is in low (1st) gear changed VSS, no help... thinking about changing TPS but found out it can not be changed by itself ...