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Home/DTC Codes/GMC/Envoy/2002-2009 4.2L I6/P1350
P1350

Ignition Control System

2002-2009 GMC Envoy 4.2L I6

High SeverityPowertrain

Description

The PCM detected a general malfunction in the ignition control system. This code indicates the PCM is not receiving the expected feedback from the ignition module.

Symptoms

  • Check Engine Light
  • Engine misfires on multiple cylinders
  • Rough running
  • No start
  • Loss of power

Common Causes

  • Faulty ignition control module
  • Damaged ignition coil pack
  • Wiring issue between PCM and IC module
  • PCM failure
  • Poor ground connection

Diagnostic Steps

  1. Test ignition module output with scope
  2. Inspect ignition coils
  3. Check wiring between PCM and IC module
  4. Verify power and ground to IC module
  5. Test each coil primary circuit

Repair Notes

Replace ignition control module or coil assembly. Check power, grounds, and wiring.

Related Codes

P1351Ignition Control Circuit High VoltageP1351IDM Input Circuit MalfunctionP1351Ignition Control Circuit High VoltageP1351Ignition Control Circuit High VoltageP1351Ignition Control Circuit High VoltageP1351Misfire Cylinder 7 With Fuel Cut-OffP1351Misfire Cylinder 7 With Fuel Cut-OffP1351Ignition Diagnostic Monitor Signal LostP1351Ignition Control Circuit High VoltageP1351IDM Input Circuit MalfunctionP1351IDM Input Circuit MalfunctionP1351Ignition Control Circuit High VoltageP1351Ignition Control Circuit High VoltageP1351Ignition Control Circuit High VoltageP1361TDC Sensor 1 Intermittent InterruptionP1361Ignition Control Circuit Low VoltageP1361Ignition Control Circuit Low VoltageP1361Ignition Control Circuit Low VoltageP1361Ignition Control Circuit Low VoltageP1361Ignition Control Circuit Low VoltageP1361Ignition Control Circuit Low VoltageP1361Ignition Control Circuit Low VoltageP1361Ignition Control Circuit Low VoltageP1361TDC Sensor 1 Intermittent Interruption

Other Powertrain Codes

P1350 on Other Vehicles

GMC Acadia

2017-2024 2.5L I4

GMC Acadia

2017-2024 3.6L V6

GMC Canyon

2004-2012 2.8L I4

GMC Canyon

2004-2012 3.5L I5

GMC Canyon

2007-2012 2.9L I4

GMC Canyon

2007-2012 3.7L I5

GMC Canyon

2015-2022 3.6L V6

GMC Canyon

2023-2024 2.7L I4 Turbo

Common Questions

What does code P1350 mean on a 2002-2009 GMC Envoy?

P1350 stands for "Ignition Control System". The PCM detected a general malfunction in the ignition control system. This code indicates the PCM is not receiving the expected feedback from the ignition module.

What are the symptoms of P1350 on a GMC Envoy?

Common symptoms of P1350 include: Check Engine Light, Engine misfires on multiple cylinders, Rough running, No start, Loss of power.

What causes P1350 on a 2002-2009 GMC Envoy?

Common causes of P1350 include: Faulty ignition control module, Damaged ignition coil pack, Wiring issue between PCM and IC module, PCM failure, Poor ground connection.

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