What is a G80 rear end?
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.
Are G80 rear end good?
Speaking from personal experience, the G80 works well at providing the extra traction needed to get through sticky situations. There’s been plenty of times the G80 in my personal vehicle has saved me from calling for a tow. The only real downside is the Eaton’s somewhat clunky operation at high-rpm engagement.
Are G80 differentials good?
“The G80 locking axle provides a greater traction advantage than limited-slip differentials in most situations, while its automatic engagement requires no driver involvement, unlike some competitors’ electronic lockers, which require driver activation,” said Jeff Luke, executive chief engineer.
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 |
Is the G80 differential limited slip?
“G80” is a GM order code for the limited slip diff; originally named “Positraction” by GM. . It’s been the same order code for 40 years or more.
What kind of differential is a G80?
With technology by Eaton, the G80 performs as an open differential until excessive slip in one wheel automatically triggers the locking mechanism, ensuring the rear wheels turn at the same speed.
What is the G80 locking differential?
During normal driving conditions, the MLocker (G80) functions as a light-bias limited slip differential. When a low-traction situation occurs that causes a wheel speed difference greater than 100 RPM, a flyweight mechanism opens to engage a latching bracket.
Does the g80 work in reverse?
Yes, the G80 works in reverse.
How does A G80 differential work?
Unlike high-tech electronic lockers, the G80 differential detects wheel slip through some flyweight-type governor. When slip is detected by the mechanism, a self-energized clutch system forces a camp plate ramp against a side gear, compressing a disc pack. This action causes both rear axle shafts to rotate at the same speed.
What kind of rear differential does a GMC have?
General Motors has been offering an automatic locking rear differential in its Chevy and GMC trucks for more than 40 years. Today, its prevalence has grown to include every body-on-frame, rear-drive vehicle in GM’s lineup – from the Colorado WT up through the leather-lined Cadillac Escalade.
What is the 2015 Chevy Colorado G80 locking differential?
The G80 is an optional extra on the 2015 Colorado WT and LT models. Furthermore, full-size SUVs such as the Chevrolet Tahoe and Suburban also benefit from the G80 locking differential’s prowess. If you got lost somewhere in between these lines, the demo video below should clear things up.
What type of gear Lube for a G80?
The G80 calls for syn. GL-5, 75W-90 gear lube. (You can also use 75W-90 in the front diff.) The reason GM says don’t add LS additive on a G80 is because, most ALL GL-5 gear lubes (the G80 uses a GL-5 syn gear lube) contain some amount of LS/FM additive, thats pre-mixed in each bottle.