This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP
P0679: P0679: Engine Control Module (ECM) Output Circuit Malfunction
on 2020 Chevrolet SILVERADO 1500 PICKUP
Important for 2020 Chevrolet SILVERADO 1500 PICKUP Owners
Before starting repairs, verify which engine your 2020 Chevrolet SILVERADO 1500 PICKUP has. Check your VIN or engine code to ensure you order the correct parts.
📖 What Does P0679 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?
Symptoms
- • Rough engine idle
- • poor engine performance
- • decreased fuel efficiency
- • and potentially a check engine light.
Common Causes
- • Faulty ECM output circuit
- • damaged or corroded wiring
- • or a malfunctioning ECM.
How to Fix P0679 on 2020 Chevrolet SILVERADO 1500 PICKUP
1. Check the wiring and connectors for damage or corrosion and repair or replace as needed. 2. Inspect the ECM for any signs of physical damage or malfunction and replace if necessary. 3. Use a scan tool to clear any trouble codes and test the engine to ensure proper operation.
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Shop Scanners ↗Related Diagnostic Codes
Other codes that may appear with P0679
P0677: Computer Output Circuit Malfunction
P0678: Engine Control Module (ECM) Output Circuit Malfunction
P0680: Engine Control Module (ECM) Output Circuit Malfunction
P0681: Engine Control Module (ECM) Output Circuit Malfunction
💡 Why These Codes Are Related:
- • Similar Issues: Same root cause or component failure
- • Related Problems: Often occur together due to system interactions
- • Sequential Codes: Progressive failure stages or multiple sensors
- • Same System: Components within the same automotive system