The future of General Motors’ full-size electric pickup trucks and SUVs is looking a little murkier.

Crain’s Detroit Business, via Automotive News, reports GM has indefinitely delayed its next-generation full-size electric vehicle (EV) program.

GM had reportedly been working on refreshed versions of its existing Chevrolet Silverado EV and GMC Sierra EV pickups, as well as the Cadillac Escalade IQ SUV and GMC Hummer EV pickup and SUV.

These models had a targeted start of production in 2028, three people with knowledge of the plan told the media outlet.

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GM was reportedly working on offering more affordable versions of these full-size EVs, which would continue to be produced at Factory Zero in Hamtramck, Michigan – a plant retooled to solely produce EVs.

Supplier executives told Crain’s Detroit Business they don’t expect to see new generations of these vehicles until 2030 or beyond.

That doesn’t necessarily mean GM won’t replace its existing fleet of full-size EVs, and the automaker could simply extend the current models’ lifecycles until it makes a decision on next-generation models.

GM invested heavily in the BT1 platform that underpins these vehicles. It announced in 2020 it was investing US$3 billion (A$4.19bn) in Factory Zero as well as supplier tooling and other projects related to the launch of the full-size EVs.