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What causes a rear end to lock up?
There are a few possible causes for the wheel to get locked. The most likely would be low differential fluid, differential side gears, a ring and pinion failure, or a failing limited slip unit. The first thing checked will be the level and condition of the differential fluid.
Do Chevy Silverados have locking differential?
In 2015, the G80 locking differential system became standard for all Chevrolet trucks. Before 2015, the system was only used in custom vehicles. However, all trucks labeled as Z71’s are equipped with the Eaton G80 locking differential system.
What is G80 code?
Often referred to as the G80 for its order code, the rear axle locks automatically if one wheel starts to spin, enabling both rear wheels to propel the truck. The added traction lets a 2WD pickup to go places traditionally thought of as 4×4 territory, and further enhances the capability of 4×4 pickups.
Does 2017 Silverado have locking differential?
The G80 automatic locking rear axle is available on most Silverado models, and is standard on LTZ and Z71 versions of the Silverado 1500 and all Silverado 2500 and 3500 HDs. Additionally, it is available on Colorado WT and LT models, and standard on Colorado Z71. It is also standard on Tahoe and Suburban.
What causes differential to lock up?
However, they can go bad overtime, due to normal wear and tear or if you regularly take the vehicle off-roading. If they wear out and you don’t address the issue, the wheels can lock up. You may need a new rear differential if you hear noises, there’s looseness, or your car has been damaged in an accident.
What happens when differential locks up?
During turns, a locking differential operates like an open differential – the wheels can rotate at different speeds. When locked, the wheel in the air doesn’t receive any torque because there is no traction and the wheel on the ground receives all the torque, allowing the vehicle to move.
How do I find the axle ratio on my Silverado?
Method 1: Count the number of teeth on the ring gear and the pinion. Divide the number of the ring gear’s teeth by the number of the pinion’s teeth. This will give you the axle ratio.
What gear ratio is a G80 rear end?
GM RPO Codes – Factory Identification Labels and Interpretation
| RPO Code | Description | Ratio |
|---|---|---|
| G76 | Positraction Rear | |
| G80 | Axle Positraction, Limited Slip | |
| G81 | Positraction Rear Axle | |
| G82 | Axle Rear | 4.56 |