That is your rear axle. It delivers the power to your tires.
The locking differential came on some of them. To determine if a particular Blazer has a locking differential you need to look for code "G80" on the RPO list. The RPO list is on a sticker in the glove compartment.
80w-90
Sure... you pull out the axle shafts, and its disconnected.
The differential on a 1986 Silverado can be replaced with any year differential from 1973 to 1987. The replacement differential must be either a 2-wheel drive or a 4-wheel drive, depending on the type that needs to be replaced.
I have a 97 blazer and I had to go to a GM dealer to get the differential shift cable that connects the 4wd actuator to the vacuum actuator switch. Apparently a dealer is the only place you can purchase this part. Hope this helps.
The 04 requires a 75/90 Synthetic and the 96 users an 80/90 GL5. Using 80/90 GL5 on gears that require synthetic lubricants will ruin them. Your answer is no. Iron
Go to www.autozone.com they have do it yourself repair manuals online.
Yes you can. There the same. Just take the parts / sending unit out of the 1987 tank and install them in the 1986 tank.
No.
I have a 2002 Blazer with the 4.3L engine and 3.73 differential gear ratio, it gives me 17 mpg on average.
For a 1996 Chevrolet Blazer, the recommended weight for rear differential gear oil is typically 75W-90. If the vehicle has a limited-slip differential, you may also need to add a friction modifier to ensure proper performance. Always check the owner's manual for specific recommendations and any manufacturer updates.
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