The move is the latest sign that electric vehicle production and demand may not be as strong as forecast. GM had been set to begin production of the electric Chevrolet Silverado and GMC Sierra in late 2024 at the suburban Detroit plant. The company said the plan now is to start it in late 2025.

GM said the change will "manage capital investment better while aligning with evolving EV demand" but said the move does not impact its battery plant plans. GM said in July that battery production at the Ultium joint venture plant in Ohio has been hampered because "our automation equipment supplier is struggling with delivery issues."

The automaker in July reiterated a previous target of building 400,000 EVs from 2022 through the first half of 2024 and projected EV revenue of $50 billion in 2025. GM has said it targets production of roughly 100,000 EVs in the second half of 2023. Reuters reported in July that the US electric vehicle market is growing, but not quickly enough to prevent unsold EVs from stacking up at some automakers' dealerships.