GM depending more on truck sales this year.

For the 2010 model year, General Motors will depend slightly more on light trucks than it does now.

That could be a problem if gasoline prices continue to rise. On Monday, June 15, the U.S. average for regular fuel was $2.67, up 5 cents from the previous week.

Light trucks will account for 23 of GM’s 35 nameplates, or 66 percent. For the 2009 model year, 30 light trucks account for 59 percent of the lineup.

Meanwhile, the Toyota, Lexus and Scion brands combined will field 16 car nameplates for the 2010 model year — outnumbering GM for the first time. GM will have 12 car nameplates for the U.S. market.

GM has slimmed down its 2010 lineup as it prepares to shed Saab, Saturn, Hummer and Pontiac in U.S. Bankruptcy Court.

GM has dropped all Hummer, Saab and Saturn models.

Only one Pontiac, the Vibe, has returned for the 2010 model year. In the United States, 2010 Vibes went on sale in March and will end in late August.

Cadillac has dropped the XLR, and Chevrolet has added a car, the Camaro, which already is on sale.

Meanwhile, as gasoline prices rise and buyers search for fuel-efficient vehicles, GM will field 10 nameplates with four-cylinder engines — 29 percent of all 2010 nameplates. That is down from 31 percent in the 2009 model year — 16 of 51 nameplates.