A 210-horsepower 5.7-liter V8 continued as standard, but a heavy-duty 190-horsepower version went into some 2500-series models. Diesel V8s departed, but a 7.4-liter gas V8 could be installed. A 4-speed automatic was the only transmission. Suburbans came with 2- or 4-wheel drive, in a 1500 series with half-ton payload, or as the 2500 series rated 3/4 ton. Each could be equipped to seat up to nine passengers. Part-time Insta-Trac 4WD had standard automatic-locking hubs. Antilock brakes now worked on all four wheels, in either 2WD or 4WD.