depends on the plug you replace it with. IF you use AC delco stock, should be .040. Some of the other plugs require .060 A new spark plug has been released for use in the above vehicles. The new spark plug has an Iridium tip instead of the current Platinum tip. Due to the different tip design, the gap of the spark plug has also changed. The new spark plug, ACDelco Part Number 41-985 (12571164), is gapped to 1.01mm (0.040 inches) when the spark plug is made. The spark plug gap is set during manufacturing and should not Service bulletin BULLETIN: 03D-J-171 LINE: 41
,030"
0.060
I`M HAVING A HARD TIME REMOVING SPARK PLUG WIRES ON MY 2002 CHEVY SILVERADO 2500 6.0. ANY TIPS?
The 2004 Chevy Express 6.0 liter motor spark plug gap is .032. Most spark plugs will come pre-gapped from the spark plug manufacturer.
It is in the drivers side head by the front spark plug,
how do i change the spark plugs on a Chevy silverado 1500
ONE AT A TIME.
.060
spell check your answer
0.035
.40 gap
6