2003 Trailblazer 37.000 miles and changing gear

[Salacak]

Seems like specially when engine is cold doesn't change gear easily.At last I feel that way. It is 4WD but I always use it on 2WD and in the morning when engine is cold engine gets laud before changing gear first to second and same second to third, if you listening the engine should change it before gets laud like that.
But when engine warm doesn't seem that way and changing gears are easy the way suppouse to be.
Any idea this is normal or not, maybe some TB owner has same feelings like mine.
Thanks guys this is a great forum.

[rodeo02]

Sounds like the clutch fan is roaring (over spinning) when cold. Very common for clutch fans. As long as it stops (quiets down) after a few minutes, it's OK. The roar noise makes the engine sound like its over-reving between gears. As far as 4x4 goes, you should exersize the system 1-2 times per month. Turn 4x4 on drive a few hundred feet and turn it off.

G/luck
Joel

[Salacak]

Thank you I will try to use 4x4 like you said.
I never used 4x4

[plinder]

Originally Posted by Salacak

Thank you I will try to use 4x4 like you said.
I never used 4x4

Yes excersising the 4 wheel drive is a great tip. I replaced the converter drive twice on my s10 blazer before I got smart to that trick.

[Salacak]

I just put on 4X4Hi and car acted like emergency break was on than got better, I drove like mile or so and switched to 2WDHi, should I try 4X4LO and A4WD too or this was enough?
Thanks again

[edbrycem]

Originally Posted by Salacak

I just put on 4X4Hi and car acted like emergency break was on than got better, I drove like mile or so and switched to 2WDHi, should I try 4X4LO and A4WD too or this was enough?
Thanks again

You shoudn't feel the 4x4 engage, its pretty smooth, in fact unless you turn really sharp or look at the indicator light you wouldn't know its in 4wd. I dont know why it did what it did unless it went into 4x4lo but i thought u had to be stopped to go into low range. i would try it again in 4HI if it goes smooth then try 4 LO. A4Wd you'll need a slippery surface(gravel road etc.) and see if it engages you'll notice it, it'l spin for a second then the front will grab and off you go. if that all works i would say ok. if u never used the 4wd then i would check the fluid levels in the transfer and front dif.

[rodeo02]

If your tires are not all exactly the same diameter, one or more worn more than the rest, you will feel some sluggishness/binding in 4x4 mode. Not real good for the drivetrain, but fine for short bursts.

G/luck
Joel

[edbrycem]

wouldn't it take more then a "worn" tire to bind. Depending on the kind of tire he has, if he has factory open trail tires there isn't really enuf tread on the tires that if he were to burn off one tire I wouldn't think it would make a difference.........would it? I know different size tires would but I would think that tire wear would be taking in account when designing the gearing. But of course those are the peolple that see it on paper and say "yup it'll work perfect". lol

[rodeo02]

It could, especially if the worn tire(s) is underinflated compared to the less worn tires. You are right about mixed matched tires. That's the more likely cause. I've seen threads where people came home from the tire shop to find one odd-ball new tire on their 4x4! That will cause some hellacious binding.

G/luck
Joel

[edbrycem]

Oh ya, I forgot about the underinflation being a factor. That'll do it.

[balboasdelight]

Originally Posted by edbrycem

A4Wd you'll need a slippery surface(gravel road etc.)

This is important. Never engage 4WD-LO on pavement (unless it's covered with snow).

.

[rodeo02]

4lo really isn't intended for driving at all. It more or less for crawling along a trail or getting you up a boat launch, etc.. You can engage 4lo (for testing) on pavement for a short burst without issue. Just make sure it's a straight away.

G/luck
Joel

[Salacak]

When I put 4Lo yellow light flashes but nothing happens, I just tried all others and switched fine but 4Lo always flashes? is this because I was on the road instead of snow covered place or something?

[maxwedge]

Originally Posted by Salacak

When I put 4Lo yellow light flashes but nothing happens, I just tried all others and switched fine but 4Lo always flashes? is this because I was on the road instead of snow covered place or something?

Owner's manual says: engage in neutral at a standstill only.

[Salacak]

Thats when I tried to switched 4LO I was stopped and put in on park then switched to 4LO and it does flashing and nothing happens.
All other 4HI AWD were fine.
Am I doing it wrong or something is wrong? (Not that I need 4LO too bad or anything but just wondering)
Thanks guys