AutoCodes – GMC – P184C GMC

P184C GMC Code - Transmission Cooling Fan Control Circuit

Quick Answer

The primary purpose of the transmission cooling fan is to control the air flow moving across the transmission heat exchangers. Common causes include Faulty Transmission Cooling Fan, Transmission Cooling Fan harness is open or shorted, Transmission Cooling Fan 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: P184C GMC indicates Transmission Cooling Fan Control Circuit.
Common causes: Common causes include Faulty Transmission Cooling Fan, Transmission Cooling Fan harness is open or shorted, Transmission Cooling Fan 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 1,122

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 Jan 30, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P184C GMC Description

The primary purpose of the transmission cooling fan is to control the air flow moving across the transmission heat exchangers. The transmission cooling fan control system resides in the Chassis Control Module. The chassis control module receives transmission oil temperature and vehicle speed data to control the Pulse Width Modulated (PWM) duty cycle of the cooling fan. The chassis control module communicates on the High Speed GM Local Area Network (HS-GMLAN) serial data bus.

OBDII Code P184C GMC - Transmission Cooling Fan Control Circuit - AutoCodes.com — P184C GMC Code - Transmission Cooling Fan Control Circuit

What does this mean?

What are the Possible Causes of the DTC P184C GMC?

Faulty Transmission Cooling Fan
Transmission Cooling Fan harness is open or shorted
Transmission Cooling Fan circuit poor electrical connection

How to Fix the DTC P184C 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 P184C 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.

Frequently Asked Questions about P184C GMC Code

1. What are the common symptoms of OBDII code P184C for GMC related to the Transmission Cooling Fan Control Circuit?

- Common symptoms include the transmission overheating, a malfunctioning cooling fan, and an illuminated check engine light.

2. What are the possible causes of OBDII code P184C GMC related to the Transmission Cooling Fan Control Circuit?

- Possible causes include a faulty transmission cooling fan, a damaged cooling fan relay, wiring issues, or a malfunctioning powertrain control module (PCM).

3. How can I diagnose OBDII code P184C GMC for the Transmission Cooling Fan Control Circuit?

- Diagnosis involves inspecting the transmission cooling fan and relay, checking the wiring for any damage or loose connections, and using a scan tool to monitor the PCM operation.

4. What should I do if I encounter OBDII code P184C GMC for the Transmission Cooling Fan Control Circuit?

- It is recommended to address the issue promptly to prevent transmission damage. Begin by inspecting the cooling fan components and related wiring for any faults.

5. Can I continue driving with OBDII code P184C GMC related to the Transmission Cooling Fan Control Circuit?

- It is not advisable to continue driving with this code active, as it can lead to transmission overheating and potential damage. Have the issue diagnosed and repaired as soon as possible.

6. How do I repair OBDII code P184C GMC for the Transmission Cooling Fan Control Circuit?

- Repair may involve replacing the faulty transmission cooling fan, repairing or replacing damaged wiring, checking and replacing the cooling fan relay if necessary, and clearing the trouble codes.

7. Are there any DIY tips for troubleshooting OBDII code P184C GMC related to the Transmission Cooling Fan Control Circuit?

- DIYers can start by visually inspecting the cooling fan and relay, checking for any visible damage or loose connections. However, for a more accurate diagnosis, it is recommended to seek professional help.

8. Can a malfunctioning transmission cooling fan cause OBDII code P184C GMC to trigger?

- Yes, a malfunctioning transmission cooling fan can cause the PCM to trigger code P184C due to the inability to properly control the cooling fan circuit.

9. Is it necessary to reset the PCM after repairing OBDII code P184C GMC for the Transmission Cooling Fan Control Circuit?

- It is recommended to reset the PCM after repairing the issue to clear the trouble code and ensure the system recognizes the repairs made.

10. How can I prevent OBDII code P184C GMC related to the Transmission Cooling Fan Control Circuit in the future?

- Regular maintenance of the transmission cooling system, including checking the fan, relay, and wiring, can help prevent the recurrence of this code.