The spark plug gap in your 1999 Chevrolet suburban is dependent upon the type of engine. The standard engine spark plug gap is .011.
The standard spark plug gap for a 99 Plymouth Breeze is between 0.035 and 0.040 inches. The specific gap varies based on the type of size of plug used.
the specified gap for a 99 for explorer is (.054). If you set it a little closer the spark plug will last longer. exp.(.045).
Br9eix
.40
.060
.060
What's the gap size for a 1.6 Mazda
between 50 and 57
0.044
.052-.056
i have a 98 dakota, my gap is .035. Any model between 97 and 99 has the same gap.