What happens when the fuse blows on a 4L80E?
Whenever a 4L80E has blown its fuse, it can no longer get instruction from the TCM. So, when you put it in drive it’ll only run in third gear. You may manually shift it into second for taking off. It’s still not good for the torque converter though.
What does 4L80E stand for in Transmission Control Module?
That stands for transmission control module, which is what controls the transmission. When this fuse is blown the transmission automatically defaults to limp mode. Once you’ve located the 4L80E fuse location, you’re going to want to test it. There are two ways of going about testing the 4L80E fuse.
What happens when you shift into reverse transmission?
Stalls When Shifting Into Reverse – Transmission Going? Discussion in ‘ Transmission & Drive train ‘ started by Rebecca, Sep 26, 2011 . I’m new (just posted my intro in “New Member” section) and I am in need of some advise/guidance.
Where is the 4L80E fuse located on a Sierra Silverado?
Locating the 4L80E Fuse. The 4L80E fuse is located in the engine bay. You’re going to look for a giant fuse box. It’s covered in plastic and usually pretty close to the battery. On the Silverado, Tahoe, Sierra, Express etc, it’s located on the driver’s side above the fender. Once you’ve located the fuse box,…
What causes no 3rd or 4th gear on a 4L80E?
4L80E Problems: No 3rd or 4th gear. One of the most common (and most frustrating) problems that happens to the 4L80E is when it loses 3rd and 4th gear at the same time. This leaves you driving around a car or truck that screams down the road. So, what causes the no 3rd gear or 4th gear problem?
Are there any problems with the Honda 4L80E?
4L80E Problems: No 3rd or 4th gear. One of the most common (and most frustrating) problems that happens to the 4L80E is when it loses 3rd and 4th gear at the same time. This leaves you driving around a car or truck that screams down the road.
What to do if there is no reverse on a sonnax 4L80?
If “No Reverse” is still present during the test, the transmission must be removed for inspection to make sure that there is nothing in the direct clutch drum (remember, there are two separate apply areas for reverse versus 3rd and 4th gear in the direct clutch drum) and that the band is properly clamping on the drum to hold for reverse.
Can a bad clutch pack stop a 4L80E?
Your 4L80E has a set of clutches that work with both 3’rd and 4’th gear. It’s referred to as the 3-4 clutch pack. A bad 3-4 clutch pack can certainly cause the 3’rd and 4’th gear to stop working. In fact, once the transmission “shifts” into third, it’ll feel like you lost the whole thing. You can shift into second to get yourself home.