Questions About Factory Options

[BlazerGuy]

On the sticker that's on the fender, it says that it is a Sequoia Special. What's a Sequoia Special? Also it says that I have a locking diff. What kind of "locker" do I have, I thinks its the Gov-Loc, right? Thanks for your advice.

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[84k5]

Mine says I have a locker too, but I think its really a limited slip. They just called it that for some reason. I may be wrong...

Brian

 

[BlazerGuy]

Yeah, I figured it was a posi rather than a real locker. By the way is there any kind of posi additive I should put in the oil?

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[Mikee]

No clue about the sequoia package, but the locker is most likely a eaton limited slip made for GM, unless it is a military truck which is then a Lockight LOCKER.

"Got stuck once, hung up on top of a Jeep!"

 

[Brian 89KBlazer]

Only time I've heard of a "Sequoia Edition" was a special edition of the Toyota ForeRunner. Don't know if it's just a sticker someone else thought was cool?

Brian
89KBlazer

 

[Executioner]

This is a new one on me, can you offer some prove, on the Lockight LOCKER..............
Thanks alot

 

[90K5]

The posi uses the same fluid as a diff w/o the posi. I think its 80w-90

 

[BlazerGuy]

Nope, its the factory sticker that lists all the options on it.

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[bablazer73]

gm has an additive that must be used when fluid is changed. regular gear oil is ok, but the additve MUST be used.

your right. I don't understand the jeep thing!

 

[6.2Blazer]

The factory option limited slip diff was called the "Gov-Lok" by GM, or listed as a locking differential on the option sheet. I really wouldn't consider it a true locker as it definitely not in the same class as the Detroit Locker or Lock-Rite. The Gov-Lok has a reputation for failing and being rather ineffective, though some people have had good luck with them.
The factory owner's manual states that a limited slip additive should be added to the standard 80w-90 gear oil. The additive contains a friction modifier that is supposed to make the clutches operate smoother and more effectively.
Concerning the Lock-Rite, I have never heard of them being used in military trucks. The mid-80's GM military pickups had a Detroit Locker installed in the rear 14-bolt axle, and I believe the military Blazers (CUCV's) used the standard Gov-Lok in the rear 12-bolt axle.

 

[Executioner]

Your factory owner's manual is wrong, or my 77,78,and 79 factory owner's manual is wrong !
I think i have read on the Eaton web site that one of the main reasons GM asked them to design the Gov-lock
was to eliminate the need for friction modifier . My three list 80w-90, that meet a GM spec. no mention of
any additive.
care to explain ?