What kind of sub is a 4L80E diesel?

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.

Can a 4L80E truck shift to overdrive?

In OD, truck shifts smooth through First, second and third, just wont shift to overdrive. Fluid is clean, no metal shavings, no burnt appearance or smell. To be quite honest, the trans looks great inside the pan. The trans shop guy said the transmission was rebuild a few years ago, which is good, trucks got 208k on her.

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.

Can you put a 4L60E in a half ton Suburban?

I know they put 4L60E’s in half ton suburbans. According to my research, the look of the trans, and the shops ive taken it to, its a 4L80E, unless of course these trans shops are as shifty as they look. Also, It just plain doesnt work.

What causes OD on a 4L80 diesel?

Since your transmission has 200Ks on it the problem is likely that the valve sleeve bore has worn. When the Torque converter Solenoid strokes the piston the transmission fluid leaks past when hot. The hydraulic signal get so weak that it will no longer activate the control valve within the pump thus kicking in OD.

What do you need to know about GM 4L80E transmission?

Because the 4L80 transmissions are sometimes used in conversion applications with earlier, non-PCM controlled engines, GM and aftermarket control modules are required and used to control the operation of the transmission in these scenarios. The 4L80E transmission may feature two speed sensors, one for turbine input speed and one for output speed.

What kind of transmission does a Silverado 6.5 diesel have?

For Silverado and Sierra pickups, the engine was backed by either a 4L80E 4 speed automatic transmission (with overdrive) or the popular NV4500 5 speed manual transmission. Common problems with the 6.5 diesel include crankshaft, glow plug, and PMD failure.

Why do I have bad shifting on my 4L80E?

In addition to erratic shifting, the trans control program will default to backup shifting mode if you drive it long enough with this bad sensor, and as a result line pressure through the valve body will be boosted to maximum value, creating harsh shifting.