Buick Riviera Engine Low Power

Put New Battery, No Power Shows At All. No Lights, Sounds, Ect. What Could Be The Issue?

I Have A 1995 Buick Riviera, 3.8l Supercharged, That Has Suddenly Lost Power And Won't Accelerate Past About 35 Mph. It Will Only Do About...

To Whom It May Concern: Not Surre If My Issue Is Engine Control/electrical Or Transmission Issue. Bellow Is A Discription Of My Problem...

My Buick Riviera Quit Running About A Week Ago. We Replaced Fuel Pump, And It Ran Fine. Now, A Week Later, It's Doing The Same Thing....