Only if there the same size and the hookups are the same, trany lines, oil lines, radiator hoses, and temperature sending units ports.
unlikely a direct fit.....the LeSabre had a 3800 v6 and the Lumina had a 3.1 or 3.4 but not a 3800, so the hose size and location most likely are different. The Monte Carlo, Cutlass, and Grand Prix will have the same radiator.
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