Open and read your owner's manual and you will find the answer. Also look under the hood for a placard with this information on it.
The recommended spark plug gap for a 2000 Chevy Monte Carlo 3.4 V6 is .060"
it is 37
.060"
0.060 Inch
0.060
.o44 and some are .043.
40
0.040 40 thousandths.
.40 gap
1998-2000 2.4L is 0.050
I have a 2000 Chevy S10 Extreme - 4 Cyl. The spark plug gap is .040. Althought when purchased, the spark plugs are pregapped. Always double check the gap.
Remove the spark plug wires from your 2000 Chevy Impala spark plugs. Remove the spark plugs with a 5/8 deep well socket by turning the socket to the left. Reverse the process to install the new spark plugs.