Fix what? You want a locker?
Why don't you just swap a G80 axle from another van into yours?

 

Yes, I want a locker. I explain why early in the thread.

But what would a used axle cost? And why would I go to the trouble of searching out a junkyard axle to replace, what is otherwise is a perfectly good, still under warranty axle? It's a two year old van. If I've ID'd the diff correctly, the locker I'm looking at is $470.00. I doubt seriously that I can find one easily, here in a Washington D.C. suburb, that would be that affordable, and not be an unknown as far as condition. Besides, a G80, while it is referred to as locking, is a limited slip.

 

The G80 provides full mechanical lockup. Don't get too hung up on marketing lingo. It's just fine for on-street use.

$470 is just the parts cost. Installing differential carriers is not a job for shadetree mechanics. If you hire someone , you could be doubling that price, or more.

If your van is still under warranty, are you sure you want to start messing with the drivetrain? How much snow do you get? Did you try the old trick of applying a bit of brake along with the gas?

 

It was one lousy inch of snow. And while I may be "shade tree like", my circle of friends aren't.

Admittedly, this is a bit of perception issue. I just got out of my second AWD Astro in getting this van last July. Had you read the first page or so of this thread, you'd know this is seen by me as a slap in the face, going from AWD to 1 wheel drive. On Memorial Day weekend, I'll be using a private boat ramp that is fairly slimey. My Astro handled it. A buddy's Nissan didn't until he kicked in the 4WD. My Express surely won't unless I do something. It's sad that a van, known for towing capacity, doesn't have the right stuff. I won't take my boat to this event unless I can fix this.

 

So, let me try and get this train back on track.

Given the chart and picture i posted in post #73, and my revelation in post #80, is it the opinion of the court that I indeed have a GM 9.5 differential? The chart shows that the two 14 bolt diff's , and the ring gear is on opposite sides, of the two. The 9.5 and mine have that gear on the left, the drivers side. The confusing part is that my diff has a fill port, neither pics of the two 14 bolt diff's have that.

 

I have been told the g80 is a bit light duty, and a detroit tru track is better....

 

I hear ya, buddy. My previous vehicle was an AWD Astro. I loved it, and I would still be driving it if it hadn't been hit. It was a BEAST in the snow. That's why I knew I had to get a Savana with AWD.

Anyway, as someone said the service guys at your dealership will have your answer. If you don't want to talk to them, I guess you could just open up the diff and see for yourself. It should be a 2 to 3 beer job.

But I'm surprised your traction control didn't kick in to help with the wheel spin.

 

It is more than enough for the boat ramp. If you don't hammer the throttle like a redneck, it will last as long as the vehicle.

 

STAN you sure have been busy since I have not been around... lol
can you please explain that for me again.... LMAO.

 

I worry about you, Ron.

But at last I have the answer. A dude over at Vandweller works at a Chevy dealer, and offered to run my VIN, and my suspicions were correct, I have a GM 9.5 diff.