What should I upgrade on my 4L60E?

What should I upgrade on my 4L60E?

Highly recommended upgrades to the 4L60E transmission.

1. Rebuild manual.
2. Rebuild kit.
3. Shift kit.
4. Accumulator pistons.
5. Separator plate.
6. Torque converter.
7. Electronics.

How much torque will a 4L60E handle?

4L60E refers to a series of automatic transmissions from GM. They are designed for longitudinal engine configurations, and include 4 forward gears and 1 reverse gear. GM 4L60E transmissions are rated up to 450 horsepower and 425 ft/lb torque, and can be custom built by Gearstar.

How to turn off flares on a 4L60E?

With the key on and using a scanner with bi-directional controls, the next step is to command 3rd gear, which turns both “A” and “B” shift solenoids off on a 4L60-E.

Why does my sonnax 4L60E flare on 2-3 shift?

When the computer did not turn the “B” solenoid off cleanly, it would not exhaust its oil fast enough and the 2-3 shift valve would move gradually instead of moving crisply from one position to the other. This allowed the 2-4 band to come off momentarily before the 3-4 clutch applied, resulting in a 2-3 flare.

What causes a WoT Shudder on a 4L60E?

3. 1-2 Shift shudder at WOT (Wide Open Throttle); 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. Check the yellow spring inside the accum housing for breakage.

What kind of truck has flares on 2-3 shift?

This month’s problem vehicle is a 1998 GM truck with a flare on the 2-3 shift before and after overhaul, with no trouble codes. The shop installed a second valve body with all solenoids but it didn’t help. Line pressure was normal in all ranges as well as when the flare occurred. When a new computer was tried, the problem went away.

With the key on and using a scanner with bi-directional controls, the next step is to command 3rd gear, which turns both “A” and “B” shift solenoids off on a 4L60-E.

What causes a 4L60E to fail to downshift?

Failure to Downshift – The 4L60E will often fail to downshift if one or more of the shift solenoids are stuck open or closed. This is due to the fact that the transmission fluid cannot be rerouted to the part of the transmission that would be making the next move.

When the computer did not turn the “B” solenoid off cleanly, it would not exhaust its oil fast enough and the 2-3 shift valve would move gradually instead of moving crisply from one position to the other. This allowed the 2-4 band to come off momentarily before the 3-4 clutch applied, resulting in a 2-3 flare.

This month’s problem vehicle is a 1998 GM truck with a flare on the 2-3 shift before and after overhaul, with no trouble codes. The shop installed a second valve body with all solenoids but it didn’t help. Line pressure was normal in all ranges as well as when the flare occurred. When a new computer was tried, the problem went away.