Why does a GM 8 speed transmission shake?
The plaintiffs claim the automaker knew the 8-speed transmissions were wearing out early and causing metal shavings to build up in the transmission pans. This is allegedly reflected in TSB 16-NA-175 entitled, “ Shake and/or Shudder During Light Throttle Acceleration, Between 48 and 104 KM/H (30 and 65 MPH) at a Steady State .”
What’s the problem with my GMC Sierra truck?
The second problem is that the fuel pump will not always shut off when the truck is shut off and runs the battery down if I dont dis-connect it each night. Any help would be appreciated, thanks R.R. I am having the same problem with my 2001 Sierra.
What kind of transmission does a GM car have?
The GM vehicles are equipped with GM 8L45 or 8L90 automatic transmissions that allegedly hesitate when drivers accelerate or decelerate. Drivers claim the transmissions can shift so hard it feels like being hit by another vehicle.
Why does my Chevy Silverado Trans not move?
I’m looking for a little info on my 4L80E trans that will not move when switched to reverse, there was a slight squealing noise when going from drive to reverse and then it stopped moving. All drive gears work fine, I read a page from alldata that it could be the sun gear coming out of the sun case. I would appreciate some kind of info.
What kind of transmission does a GMC Sierra 1500 have?
355-horsepower 5.3L V8 8-speed shiftable automatic 4WD w/low range Transmission was shuddering at highway speeds under light throttle application. The dealer seemed to know of this problem. The transmission fluid was drained and flushed, the filter changed, and a new transmission fluid added.
Why does my GM transmission shake and shake?
It is believed that the shuddering and jerking problem is related to issues within the transmission and possibly the torque converter. According to the class action lawsuit, these internal issues can cause “undue friction” and result in the hydraulic systems and gears not functioning properly.
What to do if your GMC Sierra has transmission problems?
The transmission fluid was drained and flushed, the filter changed, and a new transmission fluid added. Was told to drive for 300 miles and if problem returns, I would need a new torque converter. The truck is fine so far (but I have only had it back from the dealer 2 days).
What kind of trans fluid does GM use?
As of July 8 th, 2019, GM began using a new type of Mobil 1 automatic transmission fluid for the troublesome transmissions. Customers that complain of shuddering and harsh shifting characteristics in the 8-speed GM transmissions are recommended for a trans fluid flush.