Auto Stop-Start Removed From Full-Size 2021 GM SUVs
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Earlier this week, GM Authority reported that automatic engine stop-start would be removed from some 2021 Chevy Silverado 1500 and 2021 GMC Sierra 1500 pickup trucks. Now, we’re here to report that the feature will also be removed from the line of GM SUVs. The removal of the automatic engine stop-start feature from the full-size GM SUVs lineup stems from the ongoing global microchip shortage.
Affected vehicles include the Chevy Tahoe, Chevy Suburban, GMC Yukon, and Cadillac Escalade. The change affects models equipped with either the naturally aspirated 5.3L V8 L84 or the 6.2L V8 L87, mated to the GM 10-speed automatic transmission, which essentially means all trim levels across all model lines are effected. The change does not apply to models equipped with the 3.0L I6 LM2 turbodiesel Duramax.
As a reminder, the naturally aspirated 5.3L V8 L84 produces 355 horsepower at 5,600 rpm and 383 pound-feet of torque at 4,100 rpm, while the naturally aspirated 6.2L V8 L87 produces 420 horsepower at 5,600 rpm and 460 pound-feet of torque at 4,100 rpm.
According to a statement from Senior Manager, Product and Brand Communications for Chevrolet, Kevin M. Kelly, the change will enable General Motors to continue production of the popular full-size GM SUVs during the continued recovery from the global microchip shortage. The affected vehicles are expected to experience a small fuel economy reduction, while customers will receive a $50 credit on the vehicle MSRP.
“Our supply chain organization continues to make strides working with our supply base to mitigate the near-term impacts of the semiconductor situation,” the statement continues. “GM continues to leverage every available semiconductor to build and ship our most popular and in-demand products, including our highly profitable full-size trucks and SUVs for our customers. However, the semiconductor situation continues to remain fluid globally.”
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