passenger side, usually behind glovebox. other wise in engine compartment on passenger side.
In a 1988 Chevy pickup the ECM is located behind the glovebox.
replace the ecm
NO.
The ecm is the engine control module. I'm not sure what a ecu is.
Inside the dashboard, to the right of the glove box.
Behind the passenger side kick panel.
Behind the passenger side kick panel.
You need to check the voltage output of the magnetic pickup that goes from the distributor to the ecm. This is the reference voltage that tells the ecm that the engine is being cranked and to turn on the injectors.
Yes it will as long as the 99 is the old body style
There is no timing ajustment, Its controled by ECM- Computer.
Under the hood, on top of the passenger side inner fender.
You don't. The timing is adjusted thru the ECM.