Buick Regal Owner Manual (GMNA-Localizing-U.S./Canada-13557849) -
2020 - CRC - 6/25/19
338
Technical Data
Engine Specifications
Engine
VIN Code
Transmission
Spark Plug Gap
2.0L L4 Engine (LTG)
X
Automatic
0.75
–
0.90 mm
(0.030
–
0.035 in)
3.6L V6 Engine (LGX)
S
Automatic
0.80
–
0.90 mm
(0.031
–
0.035 in)
Spark plug gaps are preset by the manufacturer. Re-gapping the spark plug is not recommended and can damage
the spark plug.