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2014 CHEVROLET SILVERADO 1500
5.3L V8 EcoTec3 L83•RWD•AUTOMATIC•gas
6 active safety recalls on this vehicle — view recalls
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Repairs421Labor498Torque4352Fluid8DTC1996Battery1Maintenance0Recalls6
P0881moderate severityPowertrain

TCM Power Input Signal Range/Performance

on 2014 Chevrolet Silverado 1500 5.3L V8 EcoTec3 L83 · RWD

What this code means

The TCM power input signal is out of its normal range or behaving erratically. Voltage is present but not steady or correct.

Symptoms

  • Intermittent shifting problems
  • Transmission warning light on
  • Occasional limp mode

Common causes

  • Loose or corroded power connections
  • Voltage drop in supply wiring
  • Weak battery or charging issue
  • Faulty transmission control module

Diagnostic steps

  1. Inspect and clean TCM power connectors
  2. Check battery and charging system voltage
  3. Monitor TCM supply voltage under load
  4. Repair any damaged supply wiring
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