Finding someone to answer my ?

Year: 2000 Chevy TRACKER Rear Axle


• w/o ABS AT (4.88 ratio)
• ABS MT 1.6L (5.12 ratio)
• w/o ABS MT 1.6L (5.12 ratio)
• ABS MT 2.0L (4.62 ratio)
• ABS AT (4.88 ratio)
• w/o ABS MT 2.0L (4.62 ratio) limited information generic answer the Suzuki Sidekick and Vitara are sisters to the tracker ---you could have it rebuilt or junkyard and can ask junkyard for cross reference for one your not going to find a new one trackers became popular with rock crawlers can check with their groups /forum or shop online their are many companies that sell the rears

You might want to research Ford 4x4 Clubs or Bronco Clubs and things like Off-roading publications. Ford use to have performance displays at some Dealerships. There are some specialty shops which can shorten rear axles.and narrow rear ends. One thing to remember is that both the front and rear differentials need matching gear ratios. So whatever you do, think of pairs.

The code R6 refers to Limited slip 8.8" with 3.73 ratio

Hey they come with a variety of ratios so you have to look at the sheet of paper that lists the build of the vehicle. Also if you take the serial number to a dealer they should be able to tell you

If the axles are from the same size vehicles the answer is PROBABLY yes.
Differential ratio can be calculated by counting the number of teeth on the crown gear and on the pinion gear. Divide the big number by the small number, that's your ratio (to 1)

reading forums on this reveals that the h9 is a 3.55 limited slip diff mainly used in f150 fords. However all that is immaterial as what you are looking for is a diff centre that is 3.55 ratio that will fit in your housing . The same housing will use the both LSD and normal diffs as the LSD was an option offered for off road vehicles or vehicles operating in bad road conditions

Depending on which rear axle assembly your 1990 F150 has....

Please indicate which is most applicable to your vehicles current axle assmembly.


ABS, 2.73 ratio
ABS, 3.08 ratio
ABS, 3.55 ratio
ABS, 4.10 ratio
w/o ABS; (Canada mkt), 2.73 ratio
w/o ABS; (Canada mkt), 3.08 ratio
w/o ABS; (Canada mkt), 3.55 ratio
w/o ABS; (Canada mkt), 4.10 ratio

they are for rear wheel antilock brakes if your truck doesnt have this then just cut off the wires

It is possible, you just have to know what gear ratio you have in your Sierra. I had issues with my son's rear differential and did the Salvage Yard and picked one up for $250.00 with less then 45,000 miles. Remember new cars end up at Salvage Yards also.

Here are the Pro code for the rear ends to your Sierra and you can match one up at a Salvage Yard.
GQ1 -- AXLE REAR, STD RATIO
GT4 -- AXLE REAR, 3.73 RATIO
GT5 -- AXLE REAR, 4.10 RATIO
GU4 -- AXLE REAR, 3.08 RATIO
GU5 -- AXLE REAR, 3.23 RATIO
GU6 -- AXLE REAR, 3.42 RATIO
G80 -- AXLE REAR, LIMITED SLIP (POSI TRACTION)

HC4 -- AXLE REAR, 4.56 RATIO

Open Your glove box and look inside it. Should be a list of codes on the bottom.
Example: GU6 G80 According to that, you'll have a 3.42 posi

Good luck and keep me posted and call around Salvage Yards, there prices will differ from one to the next salvage yard and don't ask them for a posi rear end. The cost will you more, just search all the SUV's and look at the pro codes in the glove box. Hunt, most awd system SUV will have the G80 rear end.

Good luck and keep me posted.

look on the door jamb sticker for the axle code and compare it to the chart. please rate as solved if this helps.



The front and rear axle codes are as follows:

• Rear axle ratio codes (A) are:
  • 18 — 3.08.
  • 19 — 3.55.
  • 26 — 3.73.
  • 27 — 3.31.
  • H9 — 3.55 Limited slip.
  • B6 — 3.73 Limited Slip.
• Front axle (B) code.