If it is the new body style then it is between the battery and the engine in a black plastic box, just under the side of the battery.
If it is the old body style, then remove the inside of the glove box and it will be to the right side of it.
no ECM's in a 1981
What all does the ECM computer control on my 2006 Chevy k1500 Silverado
do you have link and program a 88 cilverado ecm when replacing
Short some where.
YES it is.
Need to know the year and model.
Not if it is a classic 1999 siverado.
Open the hood and look down the left side of the battery and you will see a black plastic box that will have the ECM inside of it.
Under hood on drivers side fuse box
The ECM on a 1999 Honda Accord is located under the hood. It is in front of the fuse and relay box.
where is my hood latch located on my 1999 Chevy silverado pickup
Disconnect the battry for one hour: then reconnect-That should do it.