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2010 GMC TERRAIN
3.6L V6•FWD•AUTOMATIC•gas
3 active safety recalls on this vehicle — view recalls
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Repairs0Labor547Torque2319Fluid6DTC941Battery1Maintenance0Recalls3
P1370moderate severityPowertrain

IC Module 4X Reference Circuit Too Many Pulses

on 2010 GMC Terrain 3.6L V6 · FWD

What this code means

The PCM detected too many pulses from the 4X reference signal in the ignition control circuit. This can be caused by electrical noise or a failing component.

Symptoms

  • Check Engine Light
  • Engine misfires
  • Timing issues
  • Rough running

Common causes

  • Damaged crankshaft reluctor wheel (extra material)
  • Electrical noise in 4X circuit
  • Faulty ignition control module
  • Wiring interference

Diagnostic steps

  1. Scope 4X reference signal for extra pulses
  2. Inspect crankshaft reluctor wheel
  3. Check wiring for electromagnetic interference
  4. Test IC module

Repair notes

Inspect reluctor wheel for damage. Shield wiring from interference sources. Replace IC module if faulty.

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🔧 Database maintained under the daily editorial review of Chris Hackleman · Master Technician · 20+ years and Jeff Moore · Master Lexus & Toyota Mechanic · 20+ years. Spot an error? Use the Help link above — a human reads every report.
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