No doubt about it, one of the biggest and most-important upgrades offered by the all-new 2021 Chevrolet Suburban and 2021 Chevrolet Tahoe is the integration of a new independent rear suspension (IRS). Now, it’s looking like this significant design change may be applied to the Chevrolet Silverado and GMC Sierra, as well.
The news comes courtesy of a recent report from Road Show, which cites comments made by chief engineer Tim Asoklis that seem to suggest the Chevrolet Silverado and GMC Sierra pickup trucks may be on the list of future IRS recipients.
During the Road Show interview, Asoklis described the “incredible” durability of the new Suburban and Tahoe’s IRS setup, saying, “These vehicles will have over four million miles of … additional road exposure compared to just doing the durability [testing].”
“And once we’re done, we take these vehicles and we completely dissect them,” Asoklis added. “We look for any and all issues.”
Asoklis was then asked if the IRS design was durable enough for use in General Motors’ pickup trucks, withstanding activities like towing, hauling, and off-roading – the sort of thing frequently associated with the Chevrolet Silverado and GMC Sierra.
“Oh, absolutely,” Asoklis answered.
While Asoklis did not go so far as to confirm that the Chevrolet Silverado and GMC Sierra would definitely get a new IRS setup in the future, he did indicate that the design would need a complete reevaluation for such an application, given the different demands of a pickup truck versus a full-size SUV.
Regardless, the prospect of adding an IRS to the Chevrolet Silverado and GMC Sierra is rather exciting. Not only does it open the opportunity for new suspension options, such as the Magnetic Ride Control and Air Ride Suspension options offered by the new Suburban and Tahoe, but it should also provide enhanced ride quality and handling.
For now, both the Chevrolet Silverado 1500 and GMC Sierra are equipped with solid rear axles with semi-elliptic, variable-rate, two-stage multileaf springs. Both models are also based on the GM T1 vehicle platform, the same architecture that underpins the new Suburban and Tahoe.
Source: Road Show