Transmission shifting

Smoothburban · May 17, 2003

Ok this is my first post here....hello to everyone!....I have a '95 GMC Suburban that I bought used in January....the truck runs great....my last 3 tanks have been in the 15-16 mpg range....just have one thing that bugs me....when it shifts at part throttle, it seems to wait to long to do it!just easing on the peddle and 'grandma-ing' it, it will wait until about 2000 rpms to shift....the truck won't even really be accelerating anymore....it does this 1-2, and 2-3....When accelerating from a stop light, keeping pace with traffic, it'll rev up to 25-2900....this is the newest vehicle i've ever owned, but my 85 trans am(700r4) seemed to shift a lot better.

timk49 · May 17, 2003

Trans-Am and a Burb. There probably is a little difference in the shifting there.

Smoothburban · May 18, 2003

I understand that a Trans Am and Burban are completely different vehicles....I guess what i am asking is: should my truck be revving up as much before it shifts? All of my other truck i've ever owned had manual tranny's so I have nothing to compare it to but the TA since the tranny's are sorta the same. I'm just used to automatics pretty much pulling steady instead of the way this one does.

Wingnut · May 18, 2003

You bought it used...Do you know the last time it was serviced? Pull the dipstick, and see if the transmission fluid is brown...Or stinks (a burnt smell that is pretty obvious.)

It sounds like it needs new fluid, and a filter. Not a hard job, but messy. Hard to tell without being there.

Welcome to the forum, by the way.

Smoothburban · May 18, 2003

I have changed the filter and fluid twice already...first time at 99000 when the filter plugged up and again at 101300 when it plugged up again....would a flush be a good thing to do? how much does it usually cost?

SilveradoWV · May 18, 2003

Not to sound sarcastic but I wouldnt wait for too many more clogs before I got a flush. Two is NOT good at all, especially that close together in mileage.