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2001 GMC YUKON XL 2500
6.0L V8 Vortec•4WD•AUTOMATIC•gas
9 active safety recalls on this vehicle — view recalls
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Repairs0Labor492Torque1427Fluid10DTC1767Battery1Maintenance0Recalls9
P0793moderate severityPowertrain

Intermediate Shaft Speed Sensor Circuit No Signal

on 2001 GMC Yukon XL 2500 6.0L V8 Vortec · 4WD

What this code means

No signal is being received from the intermediate shaft speed sensor. The transmission cannot properly determine shaft speed.

Symptoms

  • No or delayed shifting
  • Transmission stuck in limp mode
  • Warning light illuminated

Common causes

  • Failed intermediate shaft speed sensor
  • Open circuit in sensor wiring
  • Corroded or disconnected connector
  • Faulty transmission control module

Diagnostic steps

  1. Scan for no-signal fault confirmation
  2. Check connector for power and ground
  3. Test wiring continuity to TCM
  4. Replace sensor if signal absent
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