AutoCodes – GMC – P3073 GMC

P3073 GMC Code - Engine Coolant Pump Low Current

Quick Answer

The cooling system's function is to maintain an efficient engine operating temperature during all engine speeds and operating conditions. Common causes include Faulty Engine Coolant Pump, Engine Coolant Pump harness is open or shorted, Engine Coolant Pump circuit poor electrical connection. 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: P3073 GMC indicates Engine Coolant Pump Low Current.
Common causes: Common causes include Faulty Engine Coolant Pump, Engine Coolant Pump harness is open or shorted, Engine Coolant Pump circuit poor electrical connection.
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 270

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 19, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P3073 GMC Description

The cooling system's function is to maintain an efficient engine operating temperature during all engine speeds and operating conditions. The cooling system is designed to remove various amounts of the heat produced by the burning of the air-fuel mixture. When the engine is cold, the coolant does not flow to the radiator until the thermostat opens. This allows the engine to warm up quickly. The Diagnostic Trouble Code (DTC) will be set when the Engine Coolant Pump Current is not within a calibrated range for greater than 3 s.

OBDII Code P3073 GMC - Engine Coolant Pump Low Current - AutoCodes.com — P3073 GMC Code - Engine Coolant Pump Low Current

What does this mean?

What are the Possible Causes of the DTC P3073 GMC?

Faulty Engine Coolant Pump
Engine Coolant Pump harness is open or shorted
Engine Coolant Pump circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P3073 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 P3073 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.

Need more information about the P3073 GMC code?

Need more information on how to fix the P3073 GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

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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.

Frequently Asked Questions about P3073 GMC Code

1. What does the OBDII code P3073 mean on a GMC vehicle?

P3073 indicates that the engine control module (ECM) has detected low current in the engine coolant pump circuit, which may affect cooling system performance.

2. What are the common symptoms of code P3073 in a GMC?

Symptoms may include engine overheating, reduced cooling efficiency, illuminated check engine light, or unusual noises from the coolant pump.

3. What causes the P3073 code to appear?

Common causes include a failing electric coolant pump, wiring issues like damaged connectors or harnesses, or a malfunctioning ECM.

4. Can I drive my GMC with a P3073 code?

Driving with this code is not recommended, as it may lead to engine overheating and potential damage to engine components.

5. How do I diagnose the P3073 code on my GMC?

Start by inspecting the coolant pump, wiring, and connectors for damage. Use a multimeter to test for proper current in the pump circuit, and check for any related ECM faults.

6. How can I fix the P3073 code on a GMC?

Repairs may involve replacing the electric coolant pump, repairing or replacing damaged wiring, cleaning corroded connections, or updating the ECM software if needed.

7. How much does it cost to fix the P3073 code?

The cost varies depending on the issue, but replacing an electric coolant pump can range from $300 to $700, while wiring repairs may cost less.

8. Is the P3073 code specific to GMC vehicles?

While P3073 is common in GMC vehicles, it can appear in other makes and models with similar electric coolant pump systems.

9. Can a low coolant level trigger the P3073 code?

Low coolant level itself typically wonâ€™t trigger the P3073 code, but it can cause overheating, which might exacerbate pump or system issues.

10. Does the P3073 code require ECM reprogramming?

In some cases, an ECM software update may be needed if the issue is related to incorrect pump operation programming. A professional diagnosis can confirm this.