rpm at 65mph

What should the rpm be for a 09 DC LB automatic in 5th gear at 65mph?

 

around 2k

 

That is what I thought and swore that what it has been but driving home today it stayed at 2,500 rpm on flat road and even downhill. I think it is staying in 4th gear.

Is there a overdrive button hidden somewhere or another reason for it to not go into 5th? I did not have a load nor towing anything.

 

d is the overdrive

 

When you have it in (D) it should go into 5th gear. If you move the lever to the left it will stay in 4th gear. RPM on mine is right around 2000 at 65.

 

sometimes when the truck is not warmed up yet, itll keep higher rpms, its the computer doin its work, supposed to warm up the engine quicker

 

bingo! my wife bumped the lever to the left. Is there any dash indicator when this happens? the light in the dash had "4" lighted.

 

Thats is the indicator, if put in D it will have the D lit up.

 

that makes sense. thanks!