While some vehicles have specific features allowing them to be towed in four-down configuration (all four wheels on the ground), the 2003 Chevy Malibu LS does *not* have this capability.
To tow a 2003 Chevy Malibu LS behind a motorhome, you would need to use a car carrier or tow it on a trailer. This ensures the car's wheels are off the ground and protects the drivetrain.