Chrysler LLC will stop issuing new car and truck leases next week through its financial arm and instead turn its resources to financing loans for customers, it told surprised dealers on Friday. Leases will no longer be an option Aug. 1.

The decision comes as the value plummets for gas-thirsty trucks and SUVs — leaving manufacturers with vehicles with poor value at auction once the leases expire.

On Thursday, the Ford Motor Company took a $2.1 billion write-down in the second quarter, part of an $8.7 billion loss for Ford over all, related to unprofitable leases held by its finance arm, the Ford Motor Credit Company.

Chrysler’s latest sales figures showed a 36% decline in June, with car sales slumping 49% and truck sales down 30%. In the same time period, GM’s car sales declined 21.1% while truck sales slid 16%.

Both automakers have recently cut plants and jobs, and GM’s Hummer brand is currently for sale.

James E. Press, a co-president of Chrysler, said the carmaker would divert money it had been spending to subsidize leases toward offers that make traditional financing more affordable. He said Chrysler would offer discounts so that many customers who financed a vehicle would end up with about the same monthly payment that they would have had in a lease.

A shift from leasing to financing may be a sensible decision for Chrysler, and could set aside big losses due to the fall in resale values.