AutoCodes – GMC – B270A GMC

B270A GMC Code - Park Lock Solenoid Control Circuit

Quick Answer

The Body Control Module (BCM) controls the transmission shift lock control solenoid actuator by providing a battery positive voltage to the solenoid when the brake pedal is applied. Common causes include Faulty Transmission Shift Lock Control Solenoid Actuator, Transmission Shift Lock Control Solenoid Actuator harness is open or shorted, Transmission Shift Lock Control Solenoid Actuator 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: B270A GMC indicates Park Lock Solenoid Control Circuit.
Common causes: Common causes include Faulty Transmission Shift Lock Control Solenoid Actuator, Transmission Shift Lock Control Solenoid Actuator harness is open or shorted, Transmission Shift Lock Control Solenoid Actuator 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 1,127

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 26, 2020

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code B270A GMC Description

OBDII Code B270A GMC - Park Lock Solenoid Control Circuit - AutoCodes.com — B270A GMC Code - Park Lock Solenoid Control Circuit

What does this mean?

What are the Possible Causes of the DTC B270A GMC?

Faulty Transmission Shift Lock Control Solenoid Actuator
Transmission Shift Lock Control Solenoid Actuator harness is open or shorted
Transmission Shift Lock Control Solenoid Actuator circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC B270A 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 does this mean?

Code Tech Notes

B270A 01 Park Lock Solenoid Control Circuit Short to Battery
B270A 02 Park Lock Solenoid Control Circuit Short to Ground
B270A 04 Park Lock Solenoid Control Circuit Open

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B270A 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 B270A GMC code?

Need more information on how to fix the B270A GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B270A GMC code diagnosed by a professional: Find a repair shop in your area

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 B270A GMC Code

1. What are the common symptoms of OBDII code B270A GMC (Park Lock Solenoid Control Circuit)?

The common symptoms include difficulty shifting out of park, inability to shift into park, and the gear shifter getting stuck.

2. What are the possible causes of OBDII code B270A GMC?

Possible causes include a faulty park lock solenoid, wiring issues in the solenoid circuit, blown fuses, or a malfunctioning brake light switch.

3. How can I diagnose the issue related to OBDII code B270A GMC?

You can diagnose the issue by checking the condition of the park lock solenoid, inspecting the wiring for any damage, testing the brake light switch, and scanning the vehicle's computer for fault codes.

4. Can I still drive my vehicle with OBDII code B270A GMC present?

It is not recommended to drive the vehicle with this code present, as it can lead to safety hazards due to potential issues with shifting gears.

5. How can I repair OBDII code B270A GMC (Park Lock Solenoid Control Circuit)?

Repair options include replacing the faulty park lock solenoid, repairing any damaged wiring in the circuit, checking and replacing blown fuses, and fixing any issues with the brake light switch.

6. Is it necessary to reset the OBDII code B270A GMC after making repairs?

Yes, it is important to reset the code using an OBDII scanner after making repairs to clear the fault code from the vehicle's system.

7. Can a DIY enthusiast fix OBDII code B270A GMC, or should I take it to a professional mechanic?

Depending on your level of automotive expertise, you may be able to fix this issue yourself by following repair guides and using the necessary tools. However, if you are unsure, it is recommended to consult a professional mechanic.

8. How much does it typically cost to repair OBDII code B270A GMC at a repair shop?

The cost of repairing this code can vary depending on the exact cause of the issue, but it may range from $100 to $300 for parts and labor.

9. Are there any preventive measures to avoid OBDII code B270A GMC in the future?

Regular maintenance checks, such as inspecting the brake light switch and wiring, can help prevent issues that may trigger this OBDII code.

10. How long does it take to repair OBDII code B270A GMC?

The repair time can vary depending on the complexity of the issue and the availability of parts, but it may take a few hours to a full day to diagnose and fix the problem.