4l60e accumulator spring location. 18. Performance Pack HP-4L60E-01 includes some components found in both valve bodies. Diagnosed as bad 1-2 shift accumulator. Remove the 1-2 accumulator cover and pin assembly (57). 700r4 and 4l60e :install the Sonnax valve body diagram for 4L60 (700-R4) units. 6. Does the valve body need to be removed to replace the 1-2 shift accumulator? Is this something a person with moderate auto repair skill can accomplish? Hi All, Since so many of us own at least one GMT400 or similar truck/SUV equipped with a 4L60E, I figured I'd start an all-encompassing transmission thread with videos, links and other information as it relates to the 4L60/65/70/75E transmissions. the best shift quality and elimination of coast down bang is to use the piston installed in the housing and the spring against the seperator plate. 3. if you have a 4l60e then install the white 700 accumulator spring in place of the 4l60e stuff. 1-2 Shift shudder at WOT; delayed or abnormal 1-2 shift; There's a problem ONLY on the 1-2 shift: 1-2 accumulator piston cracked or stuck cocked in the bore. Molded-Steel 3-4 Clutch Piston, If the unit has a Aluminum Piston. High Performance spring set. (Purple, Ovate) Block the piston travel such as with pin, sleeve or such a heavy spring it can’t move will create a very harsh shift in most cases because you’ve taken out the ability to accumulate. 3L V6 engine. TransGo shift kit "SK-4L60E" Follow all directions except for the 2nd Accumulator, 4th Accumulator, And leave the 2nd clutch orifice be. At Transmission Depot, we offer professionally remanufactured 4L60E, 4L65E, and 4L70E automatic transmissions built to OEM specifications and matched to your vehicle. It was released more broadly against the V8 engines in 1997 and was phased into full implementation at GM by 1998 in both RWD car platforms and trucks in both 2wd and 4wd configurations. If firmer 06 sierra with a 4L60E transmission with hard shift from 1st to 2nd. *Remove the Piston from the Housing & install GM# 24209794. Remove the spacer plate support (53). Use a small amount of Transjel® to keep it in the case (Figure4). Aug 9, 2025 · Looking to upgrade your vehicle’s transmission or need a replacement for your worn-out gearbox? The 4L60E has become one of the most popular choices for transmission swaps thanks to its widespread availability, electronic control capabilities, and solid reliability when properly maintained. Thinking about replacing it myself. Remove the spacer plate support bolts (77). Here is everything you need to know about the 4L60e transmission from General Motors. Travel in the 1-2 accumulator renders the inner spring <90% functionless. The 4L60E (and similar 4L65E) is a series of automatic transmissions from General Motors. Remove the spacer plate to valve body gasket (52), the valve body spacer plate (48) and the spacer plate to case gasket (47). @ $8 on Amazon. Replace the pistons and the springs with GM parts or use the Sonnax pinless accumulators (best option) for better seal. Due to its widespread use, this transmission is likely one of the most common transmission on the highways today. GM 4L60E automatic transmission specifications, gear ratios, model year changes, application information, and additional details on the long-lived transmission platform. Hardware torque specifications for GM's 4L60E automatic transmission. Bought a new pinned OEM GM assembly for the dual spring accumulator; staying with pinless at the remaining while considering mechanical functions/limitations, noting spring rate differences and reviewing the pneudraulic requirements of the kit pieces. Use a small am unt of Tran (Figure 4). Both GM053-HD and GM054-HD contain the line pressure booster kit, spacer and spring for the pump, the pinless forward accumulator piston, TCC regulator valve spring and the 1-2 and 3-4 accumulator springs for the case. Here you'll find information to help you with Proper 4L60E Transmission identification, as well as specs, gearing RPO Codes and more. Disassemble the 1-2 accumulator assembly (54, 56, 57, 104). Do not use it! And do not reuse a Molded-Steel Piston either. Looking for the best 4L60E transmission for your Chevy? We have a wide selection of remanufactured 4L60Es built for performance and reliability. listen up. Sonnax Forward & Reverse Abuse Valve plug "77754-21" You need 2. 4L60 4L60E 4L65E 4L70E Transmission Smart Tech Input Housing Clutch Pk MM. Then remove the hold down plate seen above to the right and then the 1-2 accumulator housing lower right and then remove the separator plate it will have 2 gaskets on it i will be replacing the plate and gaskets with new ones, then put all your bits in a bag, i taped the checkballs to the bag so i wont loose my balls and then and i know there Though I agree It does noticeably affect the 1-2 shift, But that is only because the 2nd Accumulator spring in the valve body is not matched to the servo size, Matching them together is rarely done because it requires removing the valve body (Trans-Go shift kits have you modify the valve body so it can be removed without messing with valve body The tension of the 1-2 accumulator piston springs and band apply orifice size are closely matched to the accumulator valve and spring in the valve body that we spoke of previously. the double spring will cause a bang on the 1/2 shift when inverted. Discard gaskets. Install Sonnax 3-4 accumulator spring into 4L60-E case after the OE accumulator piston and pin are installed (Figure 4). Jan 29, 2026 · The 4L60E brought GM into the electronic era of transmissions, replacing hydraulic controls with computer-driven precision. Please don't hesitate to contact us if you have any questions. The 4L60E (and similar 4L65E) is a series of automatic transmissions from General Motors. Install and align Sonnax separator plate and gaskets set onto the case using two 10mm headed bolts at noted holes in the separator plate (Figure 3). More Information. This is the Outer Spring for your Blazer. Designed for longitudinal engine configurations, the series includes 4 forward gears and 1 reverse gear. The 4L60E transmission family is widely used in GM trucks, SUVs, and performance vehicles. 4L60E transmission springs,4L60E accumulator springs,4L60E transmission clutch piston return springs Sonnax S This stronger spring provides crisper shifts and may also be used in the accumulator. Both the 1-2 and 3-4 accumulator pistons are worn in the center, and the 1-2 accumulator spring (the yellow one) is broken. 3l with 4l60e I've ordered a sonnax pinless 1-2 accumulator piston and a firmer 1-2 spring (77704s I think) Is the proper setup single spring towards separator plate, piston (cup facing spring) then accumulator housing? This should be setup for a firm shift Replace with a Sonnax wide bushing. . NOTE: This will provide a 'stock' shift feel for previously modified springs or relaxed OE springs. Check the yellow spring inside the accum housing for breakage. case next to the 3-4 accumulator piston. Buy a new one. Sometimes the 3-4 accumulator spring (purple) is broken too. 5. It is dyno tested and features a 13-pin wiring harness connector. View recommended parts for quality repairs of common transmission problems quickly and easily. Easy fix in the pan. Includes information on 4L65E and 4L70E models, which are based on the basic 4L60E transmission design. Also, if the accumulator housing walls are scored, the housing must be replaced. Oct 17, 2025 · The Performance Automatic Transmission is a GM 4L60E designed for 1999-2007 GM 4WD trucks with LS-series engines. Install Sonnax . Is the cheapest option at $11 on Amazon, It technically goes to a later model 4L60E that don't have the Outer Spring, So it only has the Inner Spring included. 2 days ago · 4L60E - high mile '08 Silverado - how much is too much? Jump to Latest 77 views 7 replies 4 participants last post by bk2life 58m ago C The 4L60E (and similar 4L65E) is a series of automatic transmissions from General Motors. 250" checkball into the location in the case next to the 3-4 accumulator piston. (Try this on 700R4/4L60E 3-4 accumulator, makes no . I'll get it going with videos covering tear I have a 2001 s10 blazer 2wd 4. 4L60E-3 Vacuum Modulator System Installation TransGo #4L60E-Boost Boost Bushing . 5 Per bag. It was released in 1996 behind the 4. com. Jan 26, 2026 · Key differences between the 700R4 and 4L60E automatic transmissions include their control mechanisms and the dates they served General Motors automobiles. Its design struck the perfect balance between everyday drivability and towing capability, earning a place across a wide range of vehicles. 500 dia. Get great transmission information and parts at GMTransmissionParts. *GM 2nd Accumulator Assembly, GM# 24227711. Nov 18, 2025 · The 4L60E is a 4 speed automatic electronically controlled transmission that is used widely across GM platforms, particularly on virtually all rear wheel drive applications. 19. (You cannot do this to band servo type accumulators) some units you can also simply block the feed holes into the accumulator, removing it from the shift. zfj5m, t7og, 8te1qw, 693u, uyjdkv, ltfdad, vfvl, gbki, 76nv, ks1rx,