Use to lock camshaft timing on: CHEVROLET Lumina 3.4L V6 Monte Carlo 3.4L V6 DAEWOO Lanos 1.6L Nubria 1.6L OLDSMOBILE Cutlass Supreme 3.4L V6 PONTIAC Grand AM 2.0L Lemans 2.0L Sunbird 2.0LGrand Prix 3.4L V6