GM changed its naming nomenclature into a universal standard across all of its product lines. The 4L60 is the latter model 700R4 transmission, only the name changed, if you think you may have a 700R4 look here to identify it.

The one-piece case 4L60E was produced from 1993 through 1997. 4L60E One Piece Case Identification: 93-97 The front of a 2005 4L60E Comparing pictures of 4L60E transmissions with and without the switch can assist in recognition. Neutral Safety Switch: The 4L60E transmission can also be identified by the presence or absence of a neutral safety switch. For example, the first digit signifies the year (e.g., 4 = 2004), the second digit denotes the model, and the sixth to seventh digits represent the Julian date or day of the year. These tags contain information such as the model year, assembly number, and production date. Observing this difference can help in identification.Ĭase Tags: Another useful method to identify a 4L60E transmission is by deciphering the case tags. The earlier versions (1993-1997) had a one-piece case, while later models (1998 and up) featured a two-piece case. Two-Piece Bellhousing: A primary distinguishing characteristic of the 4L60E is its bellhousing design. To correctly identify a 4L60E transmission, there are several key features to look for. The 4L60E transmission is a popular choice in many vehicles due to its versatility and performance. They all are shifted by the vehicles ECM.They can be purple or green, depending on the year ALL 4L60E transmissions have a 12-pin connector from the harness.Here are a few characteristics that all years share These eras are easy to identify from the outside of the transmission. The 4L60E bellhousing can bolt to either engine, although you may need an adapter to get a Gen III transmission to bolt to Gens I and II and vice versa.įor the purposes of easy identification, we have broken the 4L60E into four distinct eras. When it was introduced, the original small-block Chevy engine was still in production, and it was retained for the LS Gen III line of engines. The 4L80E was used for heavier-duty trucks. The 4L60E was utilized in cars and light-duty trucks. the “E” at the end of 4L60 indicates that it is electronically controlled.ĤL60E Identification can be quite a chore since the transmission has been in production for so long. The 4L60E transmission has been in production for over twenty years, even longer if you consider the fact that it came from the 4L60 (700R4).

If you’re looking to tell the 4L60E model year, read on… The most common simple DIY 4l60e upgrades that can be done with simple hand tools in your driveway without removing the transmission to tear apart are definitely transmission coolers, pans, and thermostat bypass.If you’re trying to figure out whether or not the transmission you are looking at is a 4L60E, this pan identification guide will be enough. When it comes to upgrading your 4l60e, besides adding better internals and hard parts, there are a few simple upgrades that you can make to keep transmission temps down. The correct torque spec for the 4l60e transmission pan bolts is 100 – 120 inch pounds. When reinstalling the transmission pan on your 4l60e, be sure to not over tighten the pan bolts. How many quarts does it take to do a fluid and filter change on a 4l60e trans? For a typical pan drop and fluid change, you will need about 5-7 quarts to do the job.Īs always, start with adding a few quarts of atf when you have the new filter and pan back on and shift through the gears to get fluid moving and warm, then keep checking and added until you have the right level. GMC Sierra 1500-2500 (2500 with 6 bolt axle pattern)Ĥl60e Transmission Fluid Type & Specs – What Transmission Fluid Does a 4l60e Take.Chevrolet Silverado 1500-2500 (2500 with 6 bolt axle pattern).Here is the complete list of 4l60e equipped cars and trucks. The 4l60e transmission was found in a many light and medium duty GM cars, trucks, and SUV’s from the mid-1990’s all the way up to the early 2010’s.

2003 4l60e servo assembly diagram