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Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13566622) - 2020 - CRC - 4/15/19
398 Technical Data
Engine Specifications
Engine VIN Code Spark Plug Gap
5.3L V8 (L83) C 0.95–1.10mm (0.037–
0.043 in)
6.2L V8 (L86) J 0.95–1.10mm (0.037–
0.043 in)
Spark plug gaps are preset by the manufacturer. Re-gapping the spark plug is not recommended and can damage
the spark plug.
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