1990 Buick Reatta - Trouble starting

i cant start the car i get a signal from the key to the vat but no signal from vat to computer can some one please help me

Joe

By your very limited explanation, I’d say the vat failed. Good luck finding one for this 30 year old car.

http://thealdensorg.dyndns.org/vehicle/1995BuickLeSabre/Repairs/BypassVATS_201412/95LeSabre_BypassVATS.pdf

Tester

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