Tranmsission issue possibly?

[509Tahoe]

ive got a 2011 tahoe LT. it was a border patrol rig before i bought it
leveled on 285/70r17 tires
when im driving a lot of the times ill be doing 30 mph and itll have me in 4th gear
makes for a very sluggish drive
anyone else having this issue??
trans fluid and filter were replaced about 10k ago
shifts just fine--no slipping or popping

 

[Big Mama]

Welcome from Virginia. I’m not much help on this one but others will chime in.

 

[OR VietVet]

Maybe @Rockola1971 can chime in to help.

 

[kbuskill]

It is probably just the way the factory programs the transmission from the factory. They want you in the highest gear possible to try and save fuel.

Get a custom tune from @BlackBearPerf or buy a Diablo Sport tuner and have Diablew do a custom tune for you. It will make a very noticeable difference in driveability.

If your truck has the tow/haul button on the end of the shifter then try putting it in tow/haul mode and see if you notice any difference.

 

[509Tahoe]

It is probably just the way the factory programs the transmission from the factory. They want you in the highest gear possible to try and save fuel.

Get a custom tune from @BlackBearPerf or buy a Diablo Sport tuner and have Diablew do a custom tune for you. It will make a very noticeable difference in driveability.

If your truck has the tow/haul button on the end of the shifter then try putting it in tow/haul mode and see if you notice any difference.

ill look into those tunes and try the tow button and see what that does

 

[kbuskill]

ill look into those tunes and try the tow button and see what that does

The tow button should hold the gears longer and it will definitely lock out 6th gear and disable AFM, if I'm not mistaken.

 

[509Tahoe]

The tow button should hold the gears longer and it will definitely lock out 6th gear and disable AFM, if I'm not mistaken.

im not very worried about it holding gears for longer and i want to keep 6th gear
the issue is being in such a high gear at such a low speed

 

[kbuskill]

im not very worried about it holding gears for longer and i want to keep 6th gear
the issue is being in such a high gear at such a low speed

I understand... my point in stating that it holds the gears longer was to say that it probably won't shift into 4th gear at lower speeds as early.

 

[xx_ED_xx]

if your tires are much bigger then stock then you need a trans tune

 

[wjburken]

The tow button should hold the gears longer and it will definitely lock out 6th gear and disable AFM, if I'm not mistaken.

FYI-Tow/Haul does not disable AFM.