Which Tranny

[jgeorg]

I recently had my tranny fluid, gasket and filtered changed on my '90 Custom LeSabre. The mechanic said I should replace the vacuum modulator soon. I checked with some parts stores and they asked which tranny is it? Anyone know how to identify the tranny?

[tman]

It may be the 4T60-E, but I'm not sure if that tranny was around in 1990, I know the 91 park avenues had it, but not sure about your 90 Lesabre.