2017 Cadillac CTS and CTS-V Spark plugs

Depends on your version. Choose yours, or compare them here.

  • 2.0L L4 Engine (LTG) 0.75–0.90 mm (0.030–0.035 in) gap
  • 3.6L V6 Engine (LGX) 0.80–0.90 mm (0.031–0.035 in) gap

2017 Cadillac CTS and CTS-V Owner's Manual, PDF page 364

0.75–0.90 mm (0.030–0.035 in)Open the manual at this page ↗Added Oct 16, 2026 · Updated
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Spark plugs (gap) · 2.0L L4 Engine (LTG) · PDF page 364

0.75–0.90 mm (0.030–0.035 in)

Spark plugs (gap) · 3.6L V6 Engine (LGX) · PDF page 364

0.80–0.90 mm (0.031–0.035 in)

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All versions

2 values
Applies toValueManual saysPage
2.0L L4 Engine (LTG) 0.75–0.90 mm (0.030–0.035 in)gap “0.75–0.90 mm (0.030–0.035 in)” PDF page 364 ↗
3.6L V6 Engine (LGX) 0.80–0.90 mm (0.031–0.035 in)gap “0.80–0.90 mm (0.031–0.035 in)” PDF page 364 ↗

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