The plug gap should be set at .045
for what motor? a 3.8 L would be 0.060
on a 3.1 it is 0.60
2005 Pontiac Grand Prix 3.8L SFI OHV 6cylThe Spark Plug Gap.060 (In thousandths of an inch) 2005 Pontiac Grand Prix 5.3L SFI 8cylThe Spark Plug Gap.040 (In thousandths of an inch)
they are already gapped when you buy them.
The spark plug gap for a 2007 Pontiac Grand Prix is .060. Most plugs come pregapped for your vehicle but it is always a good idea to check them.
i belive its 0.54 gap
.060 in
The 1993 Pontiac Grand Prix 3.4 liter engine spark plug gap should be .028. Most spark plugs come pre-gapped from the manufacturer.
0.035 inches.
Owners manual, or under the hood written on a placard. Also any parts store can tell you the proper gap.
0.060 - at least from plugs Napa sells. Other plugs may have different gap or have preset gapping
Spark plug gap is .060