A rotationally resolved infrared spectrum of the pure OD overtone band of the CH4-OD reactant complex has been observed at 5165.68(1)cm-(1), shifted -9.03(l) cm-1 from the infrared overtone transition of 01). The spectrum exhibits homogeneous line broadening, which is estimated to have a zero power line width of 0.10(1)cm(-1), corresponding to a lifetime for CH4-OD (2v(OD)) of 53(5) ps. The OD (v = 1) product distribution from vibrational predissociation of the complex favors high rotor levels, indicating that the correlated CH4 fragment is produced with one quantum of bending excitation. The CH4-OD results are compared with previous studies in this laboratory of the CH4-OH complex, and reveal significant changes in lifetime and vibrational predissociation mechanism upon deuteration.