This is happening to me for 2 days because I've been towing a trailer with 4 quads and toomany stuff in the back with 4 passengers for 3 days.



What do I have to change and please dont tell me clutches because I have the red eagle clutches.

and can it be the converter doing this to my transmission?

 

Your cluster reads "Park assist off" and then "Vehicle Overspeed" with a little warning triangle light, none of which I have ever seen before.

 

Notice how it changes into third it doesnt do like that before it used to shift normal not it takes about a second to shift and forget about the park assist off and overspeed.

 

Anyway I know the problem now cuz my trans gave up on me while going to desert today.

Can I install a 4l80 on my 08 silverado?

 

GMT900 stuff.

peace
Hog

 

Holy cow!!! 160mph WOT shifts into 4th?!?! Asked for !!!

Contact Nelson Performance for 80e harnesses. Not sure of physical fitment (don't think that'll be a problem). Good luck!


*edit*


Found this in a thread today.... 4L80E Conversion Crossmember

 

Thats kph. 160kph=100mph

Ya these trucks transmissions were never designed for WOT 4th gear upshifts.
I remember that the valvebodies in the camaro/Firebird were different in the 4l60e's to allow them to safely perform WOT 3-4 upshifts.

there is a LOT more force on band when its applied at WOT into 4th than there is when its applied when shifting from 1st to 2nd gear. This due to the 1:1 up to .7:1 shift, compared to the 3.06:1 to 1.63.

I busted a 60e once doing a WOT 3-4 upshift. I only did it once and it busted the trans. And I am only talking about 200rwhp at the time.

peace
Hog

 

not good! I dont think it was slipping, I think the bands were sticking together and thats why it didnt shift

 

It didnt shift to 4th it shifted to 3rd in the video and I am fedup with the 4l60e its the third time it gave up on me first time when stock second time with a tune and the 3rd time after the red eagle and shift kit and servo.

 

Everything looked fine to me in the video. If you go from cruising in 2nd then go WOT right under your shift point, it is going to downshift and rev high quickly and then shift into second again. My nearly stock truck does the same thing. But, I guess there is something wrong since the tranny went out. You have bad luck with trannys. What broke this time?