You have to buy a decoder that you plug into your car:)
just google impalass and go on the forum there all codes are ready and available or hit aBuick forum
What is the COMPRESSion for 1994 buick century
Buick didn't make a Rainier in 1994
where is the power steering hose on a 1994 buick century
Car not getting gas Buick century 1994?
Which relay is the starter relay on a 1994 buick lesabre
Where is the heater control valve on a 1994 Buick Regal
fuel pump relay location in 1994 buick lesabre
I need to know how do i replace a haeter core on a 1994 buick park avenue?
how do i resemble the upper engine to a 1994 Buick Century? with a 2.2 litter/ vin #1g4ag5544r6420018
Lt1
Disconnect the neg battery cabl;e for 30 seconds. If it comes back on, take it to auto zone and have the codes read for free.