Going up mountain and transmission problems?

[Benny Kearns 2]

Hello all,



Going up a mountain today and the truck was not shifting into a lower gear. At times a whole high pitch whine. Suddenly a big jolt. Was this transmission slip? I've never experienced this before. Although, I have noticed the high pitch whine before when going up the mountain. Once on flat road, o issues.



Any ideas?



Thanks in advance

 

[RedRanger 7]

Fluid level? :driving:

 

[Scott Tanner]

a whine in the lower gears (1st & 2nd) is a normal sound. as for the jolt, he goveror might have thrown it into 3rd

 

[Dean Hedin]

Does your column shifter feel loose or vague? Or Does it feel tight and hard to move?

 

[EddieS'04]

Sometimes, the high pitch whine can be the rear. Like maybe the pinion bearing. Just a thought.

 

[Benny Kearns 2]

Hello and and thanks for the replies.



To be clear, the whine is really more of a screech. I am familiar with the whine these trucks make whilst in lower gears. Sorry for the misinformation.



Fluid level is OK.



Shifter seems to feel normal.



As mentioned, flat road, no issues.

 

[marlon giese]

Was this in 4wd, offroad, what speed? The screech and jolt has me stumped without more details I am going to say keep it on the flat roads.

 

[Benny Kearns 2]

Not 4wd. Not off-road. Would not go over 60mph with pedal to floor

 

[Vic Sorlie]

How many miles on your 2003? It could be that your 5R55 is nearing end of life. Search internet and YouTube for typical problems and you'll find a bunch.

 

[Benny Kearns 2]

Around 172k