Question about 1991 Buick Park Avenue
There is a wire that runs down the steering column from the key switch that is a part of the VAT. But make sure that the chip is good in the key first and that all grounds from the battery and ignition is clean and grounding propertly first. The wires will be DK Blue, Yel, Brn. The Dk blue goes to the PCM, so you want to test that one (which should carry 5 volts when attempting to start) if it has 5 volts make sure that the pin at the PCM isn't backed out or corroded.
Posted on Aug 15, 2010
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Posted on Jan 02, 2017
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