AutoCodes – GMC – P1683 GMC

P1683 GMC Code - Control Module Not Programmed

Quick Answer

This diagnostic applies to internal microprocessor integrity conditions within the Engine Control Module (ECM). Common causes include Engine Control Module (ECM) programming error, Wrong Engine Control Module, Faulty Engine Control Module. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P1683 GMC indicates Control Module Not Programmed.
Common causes: Common causes include Engine Control Module (ECM) programming error, Wrong Engine Control Module, Faulty Engine Control Module.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 10,777

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Aug 06, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
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Code P1683 GMC Description

This diagnostic applies to internal microprocessor integrity conditions within the Engine Control Module (ECM). This Diagnostic Trouble Code (DTC) also addresses if the ECM is not programmed.

OBDII Code P1683 GMC - Control Module Not Programmed - AutoCodes.com — P1683 GMC Code - Control Module Not Programmed

What does this mean?

What are the Possible Causes of the DTC P1683 GMC?

Engine Control Module (ECM) programming error
Wrong Engine Control Module
Faulty Engine Control Module

How to Fix the DTC P1683 GMC?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1683 GMC code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.