Flywheel / flexplate bolt
Tightening procedure
- Torque 15 lb-ft · 20 N·m
- Torque 37 lb-ft · 50 N·m
- Torque 74 lb-ft · 100 N·m
Complete the passes in the order shown. Angle passes are turn-of-the-nut steps measured with an angle gauge after the preceding torque pass.
Tools
- socket
Notes
count_total corrected 8 to 6 on 2026-06-03 (GM SI tightens flywheel bolts 1-6; parts catalog lists 6 per engine). Three progressive torque passes. GM table corroborates the first pass (15 lbft). Catalog PN: GM 11569956 per figure 1Y00-083 callouts 133 and 151 — "BOLT,FLYWHL(M11X1.5X23.5 W/SEALER) — Required: 06 per engine, Y 6.2W(LS3) (2008-2011). M11x1.5 thread, 23.5mm long, pre-applied sealer (typically Loctite 271 equivalent). Used for both manual flywheel and automatic flexplate." Socket: not separately specified by GM; left unspecified pending confirmation.
Sources
- GM Fastener Tightening Specifications (6.2L LS3), Document ID 2296270
- 2011 Chevrolet Corvette Parts Catalog (GM Professional, Dec-11 supersedes May-11)
Values are cited as facts. We do not reproduce the manufacturer's prose, table layout, or diagrams.