Is the GM 6L80 / 90 the GM 4L60E?
Is the GM 6L80 / 90 the GM 4L60E?
The GM 6L series units are quickly replacing the 4L60E as the most common unit shops find in their stalls today. Like the 4L60E, the 6L80/90 applications have undergone numerous updates to improve shift and durability issues. A lot of updates have occurred to the parts to address the problems you may be experiencing.
Why is the transmission slipping on my Chevy Silverado?
The sunshell is damaged. The transmission needs to be replaced or repaired. The 2-4 band is slipping, or servo seals are leaking. Servo seals can be replaced without pulling transmission, or the transmission must be removed for band replacement. No 1st or 4th gear, and transmission shifts from 2nd to 3rd by itself:
What happens when clutch fails on GM 6L80 / 90?
If the sprag fails to hold, the vehicle will seem to drop into neutral, leading you to think the 1234 clutch failed. This type of failure is easy to overlook during inspection, so make sure you inspect the elements and the races closely (Figure 5).
Why is my GM 6L 45 gearbox not working?
Otherwise, malfunction of the valve body and its solenoid valves is most likely because of contamination by products of the wear. This is the main reason to repair 6L 45/6L 80 gearbox, which is caused by transmission overheating and oil starvation. Other valve body problems may occur at the mileage of 300 000 km.
What’s the most common transmission failure on a GM 6L80?
GM 6L80 and 6L90 units are now starting to reach their prime age in the repair cycle, and techs across the country are starting to see a consistent pattern of transmission failures with full-size 6L80, 6L90 vehicles. So what’s the most common failure that’s seen time and again with these?
Can a worn transmission pump cause transmission slippage?
Worn transmission pump: The transmission pump supplies pressurized hydraulic fluid to the transmission. A pump that is damaged or worn can result in a lack of internal pressure and transmission slippage. You may hear a whining noise, or notice a fluid leak. Solution: Typically, the transmission must be rebuilt or replaced when the pump fails.
Why is my Trans bad on my 4L60E?
Trans seems noisy when moving in 1st and Reverse, noise goes away instantly if you shift to N or the transmission goes into 3rd gear: Reaction planetary is worn out due to high miles or insufficient lubrication. Not a critical failure, but not a good sign either.
Can a GM 4L60 es have a clutch failure?
Over time, technicians start to see the same patterns of failures in different families of units. For instance, transmission techs with any time under their belts can tell you all about 3-4 clutch failure in GM 4L60-Es, intermediate stub shaft failure in Ford 4R70Ws and solenoid issues in Aisin AW 55-50s.
