In this work, we identify driving and spectator phonon modes in pentacene exciton transport. Here, we define a driving mode as one that, when selectively amplified, modifies the overall exciton transport dynamics as compared to the dynamics with no selective phonon mode amplification. Spectator modes are defined as modes that do not modify exciton transport dynamics when selectively amplified. We use double pulse SOFSRS to amplify individual lattice vibrations and measure the resulting exciton transport dynamics with micron spatial resolution and femtosecond temporal resolution. By comparing the excited state dynamics with selective amplification of each phonon mode, we pinpoint the functional role of each lattice vibration in driving or hindering exciton transport. We demonstrate the multimodal contributions of phonon vibrations in mediating exciton transport in pentacene crystals. This study provides new insights into the role of crystal packing motif and leads the way for informing the design of organic semiconductors with increased exciton diffusion efficiencies to improve the overall solar cell performance.