Avalanche AWD trans issue?

[AVAXUV]

hey guys, i own a vy2 hsv avalanche xuv, and last night i was driving up the freeway when what seems, my trans had just let go on me, keep in mind the car has done 165,000 kms.
i tryed to put it in gear but there was nothing, no engaging, but the computer was saying systems ok.
i ended up having to get it towed and wait for the verdict tomorrow.

id hear a few people saying they've had problems with these AWD auto transmissions before.

i was just wondering if any of you guys had had any similar problems or know of any.

cheers guys, sean.

[XUV]

have you had the trans serviced in the last 50.000 kays ?

when is a trans service due on these rigs ?

maybe a computer glick with the AWD system .

[planetdavo]

id hear a few people saying they've had problems with these AWD auto transmissions before.

i was just wondering if any of you guys had had any similar problems or know of any.

cheers guys, sean.

We've replaced a couple in the workshop Sean, but we've also replaced several dozen regular Commodore ones as well, so I wouldn't say that AWD ones are worse off.

[TYREFRIAR]

Its about the right KM for issues with the auto in the AWD models, we have had afew now between the 150-170k km that have needed rebuild.

[Blown 454 AWD]

You'll only get torque issues with Holden AWD when you're blown

You don't make enough power until then.

1st 2nd band is the first to go with too much power.

(shit, did someone say too much power, wash their mouth out with Mainlube)

Cheers

Steve

[XUV]

so how do you prevent a rebuild ??

[planetdavo]

so how do you prevent a rebuild ??

$3000 worth of Mainlube should prevent a $3000 reconditioned trans being required...:1peek:

[XUV]

it's a bit like that ,
driving-driving , watching-watching , slipping-slipping , watching-watching , clunk-clunk-kaboom , watching rebuild .....

[Ganzer]

I blow 3rd and 4th in mine with 62 000 kay,
going a the hiway and over took a 4x4 doing 80 in 100 zone, the auto kicked back a gear and took off. Then pfft sound like a turbo blowoff valve and i then had a light spray of something on the windscreen, it smelt like beer. So i thought maybe the 4x4 through a beer at my car. But down the road a bit, it was reving really high while doing a 100km it was around 4000rpm so baby it to friends house and rang for tow truck.

as i said it was found 3rd and 4th gears were blown had it rebuilt and paid extra to strenghten it, but warranty pay for it all $3500.

down side was waiting for 4 week for it to be fixed

[Avalanche]

$3000 worth of Mainlube should prevent a $3000 reconditioned trans being required...:1peek:

I have just cracked 140,000 km, on mine & the auto is fine, & the fliud is clean as a whistle. But i have been servicing every 20-30,000km. A filter & 4 -5lt of castrol synthetic is small insurance to pay. I cant say mine has had an easy life either. (touch wood)

[AVAXUV]

hey guys, thanks for all the feedback!

car got looked at today and turns out i need a new trans and flywheel! i was surprised at the flywheel going!
so were hoping we can claim both on warranty with runs out in a very short time! lucky!!!

so just waiting in the mean time, i was told i still might have to pay a couple grand even with warranty? not sure what the go is

il post up more when i know more details

cheers guys, Seam

[Blown 454 AWD]

so how do you prevent a rebuild ??


Synthetic fluid

Steel servo shift kit

Bring line pressure up.

You must have clean changes when you bring up the kWasps.

When your blown, any kind of flaring when changing will burn the clutches and bands then its all over.

With my Craig's Automatics custom built AWD 4L80e (lots of grip) with no blower on (power down) changes like a sledge hammer, boosting the power smooths out the change but it still must be clean.

Some may of heard the change at the last Nats. changes like a paddle pop, change completes in around 3 tenths of a second, sounds so nice when its right.





Avalanche, 3rd -4th is unusual however, it'll only happen under WOT.

When the Whipple was on, we knackered 4 x 4L60e's in under 10,000 klms before we went 4L80e.

http://files.mainlube.com/files/LS1/Another%20Broken%204L60e.jpg

http://files.mainlube.com/files/LS1/Broken%204L60e.JPG

Cheers

Steve

[planetdavo]

so just waiting in the mean time, i was told i still might have to pay a couple grand even with warranty? not sure what the go is


Will depend on the wording of the extended or used car warranty.

[mickeyVX350]

Wow.. Scary...

I have the 6 - and with 220K it still shifts well... They are a different Trans though aren't they...

[XUV]

I blow 3rd and 4th in mine with 62 000 kay,
going a the hiway and over took a 4x4 doing 80 in 100 zone, the auto kicked back a gear and took off. Then pfft sound like a turbo blowoff valve and i then had a light spray of something on the windscreen, it smelt like beer. So i thought maybe the 4x4 through a beer at my car. But down the road a bit, it was reving really high while doing a 100km it was around 4000rpm so baby it to friends house and rang for tow truck.

as i said it was found 3rd and 4th gears were blown had it rebuilt and paid extra to strenghten it, but warranty pay for it all $3500.

down side was waiting for 4 week for it to be fixed

was your's the 4l60 or 4l65 ?

[XUV]

Synthetic fluid


what's it worth a litre ?

is the factory stuff not synthetic ?

[Ganzer]

was your's the 4l60 or 4l65 ?

From what i was told by hsv any avalanche with a cable throttle WILL HAVE a 4l60

where the ones with Fly by the wire WILL HAVE 4l65.

Even though in the sale booklet that was print in 2003 said they ALL came with 4l65, but hsv say it is a misprint.

[Blown 454 AWD]

what's it worth a litre ?

is the factory stuff not synthetic ?



No, Factory is not Synthetic.

One thing we have noticed with Dex VI is a cleaner firmer change. (better clutch additives)

Transmax Z is a Group 4 Synthetic (the only Fuel company ATF I would entertain) not sure its cost, around $18 per litre last I saw.

The Mainlube 160 ATF is a Group 3 (high quality mineral classed as a Synthetic because of its high spec's) and is also $18 per litre. Mainlube is Dex VI spec and will upgrade all GM Trannys.

I believe Mainlube has a better additive package however, group 4 will last about 20% longer than Group 3 (that's if you can get your tranny to last that long with the extra power anyway :) )

I put the Mainlube 160 in my armchair (Delicia 2.1 ton AWD Turbo Diesel Van) and a premium sponsor (from here) was it one day and commented, "shit this old bitch changes nice and crisp" my comment was .....Dexron VI :)




If you notice any type of flaring on change with your auto, have it serviced immediately (bands adjusted, bring line pressure up a little, flush until oil is bright red (or green if Transmax) FilterMag magnet on bottom of pan, extra cooler and cross your fingers as these are band aids, "the beginning of the end has started"

With careful maintenance you can certainly extend the autos life.

Best, if you know you beat it, is to put these measures in place before you have any flaring and you may win the battle.

Cheers

Steve