How many miles does a 4L80E transmission last?
How many miles does a 4L80E transmission last?
Mine has over 300,000 Kilometers on it and is still going strong. The 4L80E is commonly known as a fairly bulletproof tranny, so as long as it’s not abused they’ll commonly outlive most vehicles they’re in.
Why is my transmission sluggish?
The most common cause for slipping is low fluid levels. Low fluid levels can create a number of problems, such as overheating and not enough hydraulic pressure being produced to engage gears. The transmission fluid is in a closed system and should never be low; low levels could indicate a leak in the transmission.
Is the 4L80E transmission a good or bad transmission?
But while the 4L80E is a strong, heavy-duty transmission, during the first few years of production the 4L80E was not as durable as its design permitted due mainly to faulty parts. As such, most of the 1991-1992 454SS trucks came with 4L80E transmissions that had faulty parts from the factory.
What’s the problem with the 4L80-E no overdrive?
The most common problem facing the 4L80-E NO OVERDRIVE and how to deal with it. Not open for further replies. If the problem is electrical then chances are you can troubleshoot the problem yourself. The torque converter has a torque converter clutch. It is this clutch that provides the mechanical coupling from the engine to the transmission.
How does the clutch work on a 4L80?
It is this clutch that provides the mechanical coupling from the engine to the transmission. The Computer commands this clutch through the torque converter solenoid. The TCC solenoid actuates pilot pressure and sends it to the pump. The pump (in short) puts the pressure on this plate that some call a piston.
Why does my 4L80E not downshift to lower gear?
The problem with these are that the solenoid intake port has no screen, which means any debris floating around in the pan can get into the very small inlet hole and jam the solenoid open, forcing fluid flow, which prevents the plunger from sliding in the valve body and hence prevents a downshift to the next lower gear.
But while the 4L80E is a strong, heavy-duty transmission, during the first few years of production the 4L80E was not as durable as its design permitted due mainly to faulty parts. As such, most of the 1991-1992 454SS trucks came with 4L80E transmissions that had faulty parts from the factory.
What kind of sub is a 4L80E diesel?
I’m not sure you’ve got a 4l80e, most Subs had 4l60e. If it’s a diesel you might, but just make certain what it is before you order anything. I deff have a 4L80E. Its a 93 Suburban 4×4 8 lug 2500.
When did GM start using the 4L80E in trucks?
GM started using the 80E in 91 on the 3/4 and one ton trucks. Before that was the good ole TH400. 93 was the first year for the 4L60E. Sounds very doubtful that it is a major internal hard part.
The problem with these are that the solenoid intake port has no screen, which means any debris floating around in the pan can get into the very small inlet hole and jam the solenoid open, forcing fluid flow, which prevents the plunger from sliding in the valve body and hence prevents a downshift to the next lower gear.
