There should be a positive post in between the washer fluid tank and the relay box. It came with a stock red plastic cover with a "+" on it but this may have been removed by a former owner. Hook your hot or red jumper to that and you can ground the black jumper on any unpainted metal under the hood...like a motor mount bolt.
The battery on the Monte Carlo is under the hood. It is under the washer fluid bottle, which has to be removed to reach the battery.
Underneath the battery, underneath the battery tray.
In engine compartment
It's under the washer bottle.
The battery posts are located in the lower right hand corner as you face the engine. It is under the windshield fluid container.. on the side of the battery!
You have to unscrew the bar that sits over it to get to the battery. a real pain
it is located in the drivers fender well, just behind your battery. Betty
If it fits in the battery compartment and can be secured, and the battery posts are both the same orientation then it will work.
Remove the cables from the 2001 Monte Carlo, then take out the battery hold down. Lift the battery out and put the new one in. Install the hold down, then connect the cables back.
Dead or weak battery? Alternator not charging battery properly?
If the alternator is good then the battery is bad.
As I understand it, the windshield washer tank has to be removed. The battery is under it.