[bartonmd]

We have a 2.7:1 low range, IIRC... If you turn 2000rpm at 70, normally, you were turning ~5400rpm, correct?

In short, it's really hard on the drivetrain components to be in any kind of 4WD (4HI or 4LO) on dry pavement, and my old S-10 said you weren't supposed to run 4LO over 40mph, IIRC...

If it's still together, and not grenaded, you're probably alright... Just don't do it again... This could very well have been a classic case of something being slightly wrong, then driven on, which grenaded the whole T-case. I don't even know that my mom would do that...

How on earth did you know to shift into neutral to get it INTO 4LO, but not know to shift it into neutral to shift out of 4LO???

Mike

 

[bartonmd]

I hope I didn't ruin anything. Also, what is your opinion on using the Trailblazer for pulling up bushes?

Weird thing - it doesn't have to be in neutral to shift into 4-low (did it just like I shift into 4-high)... I don't get it. :weird:

I use the TB to pull up bushes, myself... Not a problem at all, as long as you don't get too crazy with it... Always use a chain or non-stretching "tow" strap. get 3-4' of slack, then "bump" against a tight chain... Breaks the roots easier than just pulling... I actually pulled out a small tree stump like this with my Caprice... bump it, and it isn't as hard on the drivetrain as just "pulling".

It should have to be... You can pull it off if you're going ~3-4mph at idle, and the shaft speeds line up (I do this sometimes in my S-10), but it shouldn't let you do it...

Mike

 

[bartonmd]

Plus I'd do an oil change now, I couldn't imagine how hard the engine must have been screaming at 70mph in 4-low, red line much? :crazy: On an old truck I had lost the high range in the transfer case, disconnected the front drive shaft but that was still a scary ride, couldn't go faster than 40mph without starting to overheat.

Nah... the oil life monitor will compensate for it, and tell him to change the oil somewhat sooner that it would have, to begin with... This is also a DOHC, 4-valve/cyl engine... They're MADE to spin... I'm not concerned about the engine at all...

Mike

 

[bartonmd]

Thank you so much - I just reposted to another board and changed the title. Thanks again!

Oh, don't do that! Just go back into your first post, do a full edit, and change the title... If that doesn't work, just PM a mod, and have them change your title... The mods, then, could move this thread over there! No sense in having the same conversation twice...

Mike