GM’s 6.2-liter V-8 investigated for engine failure in SUVs, trucks

General Motors’ biggest vehicles equipped with the brand’s biggest engine may have a big problem. The NHTSA in January opened an investigation into the 6.2-liter V-8 engine offered on the top trims of everything from the Chevrolet Silverado 1500 and GMC Sierra pickup trucks to the Chevy Tahoe and Cadillac Escalade full-size SUVs. The safety agency…General Motors’ biggest vehicles equipped with the brand’s biggest engine may have a big problem. The NHTSA in January opened an investigation into the 6.2-liter V-8 engine offered on the top trims of everything from the Chevrolet Silverado 1500 and GMC Sierra pickup trucks to the Chevy Tahoe and Cadillac Escalade full-size SUVs. The safety agency…