P0701 GMC Code - Transmission Control System Performance
Quick Answer
The transmission fluid pressure switch, also known as the pressure switch manifold, is a multiple switch assembly made up of 3 normally open pressure switches and 1 normally closed pressure switch, which monitors the position of the 3 shift valves and manual selector valve. Common causes include Faulty Transmission Control Module (TCM), Transmission Control Module harness is open or shorted, Transmission Control Module 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
- P0701 GMC indicates Transmission Control System Performance.
- Common causes
- Common causes include Faulty Transmission Control Module (TCM), Transmission Control Module harness is open or shorted, Transmission Control Module 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.
Code P0701 GMC Description
What are the Possible Causes of the DTC P0701 GMC?
- Faulty Transmission Control Module (TCM)
- Transmission Control Module harness is open or shorted
- Transmission Control Module circuit poor electrical connection
- Faulty Transmission Fluid Pressure Switch
How to Fix the DTC P0701 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 P0701 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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Information for Specific GMC Models
- P0701 2014 GMC Sierra — Transmission Control System Performance
- P0701 2015 GMC Sierra — Transmission Control System Performance
- P0701 2016 GMC Sierra — Transmission Control System Performance
- P0701 2017 GMC Sierra — Transmission Control System Performance
- P0701 2018 GMC Sierra — Transmission Control System Performance
Frequently Asked Questions about P0701 GMC Code
1. What does the OBDII code P0701 mean on a GMC vehicle?
P0701 indicates a problem with the transmission control system's performance, meaning the system is operating outside of the expected parameters.
2. What are the common symptoms of a P0701 code in a GMC?
Symptoms may include the Check Engine Light turning on, erratic shifting, slipping transmission, reduced fuel efficiency, or the vehicle entering limp mode.
3. What causes a P0701 code on a GMC?
Common causes include low or dirty transmission fluid, a faulty transmission control module (TCM), damaged wiring or connectors, or internal transmission issues like a failing solenoid.
4. Can I still drive my GMC with a P0701 code?
Driving with a P0701 code is not recommended, as it may lead to further transmission damage or unsafe driving conditions.
5. How do I diagnose a P0701 code on my GMC?
Diagnosing a P0701 code involves using an OBDII scanner to check for related codes, inspecting transmission fluid levels and quality, and examining wiring and connectors in the transmission system.
6. What repairs can fix the P0701 code on a GMC?
Repairs may include replacing or refilling the transmission fluid, repairing or replacing damaged wiring, reprogramming or replacing the TCM, or addressing internal transmission issues.
7. How much does it cost to repair a P0701 code on a GMC vehicle?
Costs vary depending on the issue; minor fixes like fluid replacement may cost under $100, while TCM replacement or internal transmission repairs can exceed $1,000.
8. Can a dirty transmission filter cause a P0701 code?
Yes, a clogged or dirty transmission filter can restrict fluid flow and lead to transmission control system performance issues.
9. Does a P0701 code mean I need a new transmission?
Not necessarily. The issue may be minor, such as low fluid or a faulty sensor, but a thorough diagnosis is needed to rule out severe transmission damage.
10. Will clearing the P0701 code solve the problem?
Clearing the code won't fix the underlying issue. The cause of the code must be identified and repaired to prevent it from returning.
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