2000 GMC Safari axle may be broken

Tiny
JSINGS42
  • MEMBER
  • 2000 GMC SAFARI
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 140,000 MILES
I opened the Differential and observed that all the gears inside turn when the van is placed in reverse or drive. I can hear noise from the left wheel. Does that mean it could be a broken axle or does it still indicate the spider gear?
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Monday, January 7th, 2008 AT 10:26 PM

9 Replies

Tiny
MHPAUTOS
  • EXPERT
Hi there,

What is actually your problem? If you have a standard diff and you have a broken axle, you will have no drive at all, if a limited slip diff or a load sensing diff you will still have drive at one wheel. Easy way to test is to jack up car, and turn one wheel, if standard diff other wheel will rotate in opposite direction if axle ok, LSD diff will turn in same direction, and you will not be able to hold wheel when other is rotated. If you have the cover plate off you will be able to to rotate the crown wheel and view the spider gears in the diff centre.

Mark (mhpautos)
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Tuesday, January 8th, 2008 AT 1:33 AM
Tiny
JSINGS42
  • MEMBER
The problem is that when I put the van in gear (drive or reverse) it does not move. The drive shaft turns. The universal joint turns. The gears inside the differential turn. The wheels do not. I suspect that the rip-off brake repair shop that shall "Just" remain nameless did something to my rear brakes on that side when I told them that I would not be paying them $750 for a routine brake job and to just put everything back together. This was the day before I got to a customer's house and put it in reverse for the last time before it had to be towed home.
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Wednesday, January 9th, 2008 AT 1:16 AM
Tiny
MHPAUTOS
  • EXPERT
Hi there,

Identify which axle has failed and remove, you will have to wash all the oil oil out as well as there will be a fair amount of metal suspended in it, Depending on where the axle has failed, will govern how easy it will be to remove.

Mark (mhpautos)
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Wednesday, January 9th, 2008 AT 1:36 AM
Tiny
JSINGS42
  • MEMBER
When standing next to the left wheel I hear a noise there
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Wednesday, January 9th, 2008 AT 1:40 AM
Tiny
JSINGS42
  • MEMBER
I also drained the differential and there was no suspended metal in the oil.
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Wednesday, January 9th, 2008 AT 1:41 AM
Tiny
MHPAUTOS
  • EXPERT
Is the car fitted with an LSD or standard diff.

Mark (mhpautos)
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Wednesday, January 9th, 2008 AT 2:09 AM
Tiny
JSINGS42
  • MEMBER
I will be able to check for sure later today but since it is a service van with nothing else fancy going on my assumption would be for a standard one
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Wednesday, January 9th, 2008 AT 9:35 AM
Tiny
JSINGS42
  • MEMBER
I just got the wheels off the ground and here is what I found:
(1) if I put the van in drive, without the engine running, the small gears inside the differential turn along with me turning the right wheel (but not the large gear)
(2) if I put the van in drive, without the engine running, the large gear inside the differential turns along with me turning the drive shaft (but not the small gears)
(3) with the van in park, without the engine running, nothing else turns along with me turning the right wheel (not the even the other wheel) but I can see the end of the shaft turning inside the differential
(4) with the van in park, without the engine running, nothing else turns along with me turning the left wheel (not the even the other wheel) but I hear a scraping sound and I can see the end of the shaft turning inside the differential
(1) when I start the engine and put the van in drive The drive shaft, all the wheels inside the differential and the "right" wheel turn (but not the left).
What does that all tell me.
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Saturday, January 12th, 2008 AT 2:45 PM
Tiny
MASTERTECHTIM
  • MEMBER
It tells you that the axle either broke or its stripped inside the side gear. Its very simple to remove the axle. Remove suspect wheel, remove drum, now on the center chuck of the rear end, (where the big gears are) there will be a 5/16 bolt going side ways into the center piece. Remove that bolt, when you do the large pin will slide out, ok. Now push the suspect axle in to the center chuck, now a c shaped clip will fall out, (this holds the axle in) now pull the axle out. See if the splines look stripped or the axle may in fact be broken. If axle looks ok, than you need spider gears. Dont get scared, your almost there and you saved yourself a lot of money because the spider gears and or axle are relatively in expensive. Let us know how you make out.
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Saturday, January 12th, 2008 AT 3:45 PM

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