.060 in per chiltons manual
The spark plug gap for a 1998 Chevy Lumina (with 3.1L or 3.8L engine) is .060".
.045.
The 1998 Chevrolet Silverado V-8 engine spark plug gap is .031. Most spark plugs come pre-gapped from the spark plug manufacturer.
Need to know what engine you have.
Listed under the hood on a placard and in your owner's manual.
0.06
Need to know what engine it has to answer that one.
ACDelco 41-601
.050
1998-2000 2.4L is 0.050
.060 in inches.
It don't have 1. You MUST remove the transmission pan to drain the fluid.