AutoCodes – GMC – P0826 2016 GMC Sierra

P0826 2016 GMC Sierra Code - Up And Down Shift Switch Circuit

Quick Answer

The Driver Shift Request (DSR) allows the driver to select the desired range of gears for current driving conditions. Common causes include Faulty Transmission Shift Lever, Transmission Shift Lever harness is open or shorted, Transmission Shift Lever 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: P0826 2016 GMC Sierra indicates Up And Down Shift Switch Circuit.
Common causes: Common causes include Faulty Transmission Shift Lever, Transmission Shift Lever harness is open or shorted, Transmission Shift Lever 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 227

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 02, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0826 2016 GMC Sierra Description

The Driver Shift Request (DSR) allows the driver to select the desired range of gears for current driving conditions. The DSR shift system is activated when the gear selector is in the manual position. The DSR system is deactivated in all other range positions. Pressing the plus (+) switch once will command the Body Control Module (BCM) to signal the Transmission Control Module (TCM) to upshift to the next high gear. Pressing the minus (−) switch once will command the BCM to signal the TCM to downshift to the next lowest or previous gear. The TCM will not allow a downshift if the transmission is compromised by over-speeding. The automatic transmission manual shift switch is comprised of three different resistor values in series and two switches. The BCM supplies a 12-volt circuit to the automatic transmission manual shift switch. The signal circuit varies the voltage back to the body control module depending on which switch is depressed. The Diagnostic Trouble Code (DTC) will be set when the BCM detects an invalid voltage on the TAP up/down signal circuit for 1 minute.

OBDII Code P0826 2016 GMC Sierra - Up And Down Shift Switch Circuit - AutoCodes.com — P0826 2016 GMC Sierra Code - Up And Down Shift Switch Circuit

What does this mean?

What are the Possible Causes of the DTC P0826 2016 GMC Sierra?

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

How to Fix the DTC P0826 2016 GMC Sierra?

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 P0826 2016 GMC Sierra 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 P0826 2016 GMC Sierra 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 P0826 2016 GMC Sierra Code

1. What are the common symptoms of OBDII code P0826 in a 2016 GMC Sierra?

- Common symptoms include issues with the up and down shift functions, difficulty shifting gears, and potential illumination of the Check Engine Light.

2. What does the OBDII code P0826 in a 2016 GMC Sierra indicate?

- This code indicates a problem with the up and down shift switch circuit in the vehicle's transmission control module.

3. What are the possible causes of OBDII code P0826 in a 2016 GMC Sierra?

- Possible causes include a faulty up and down shift switch, damaged wiring or connectors in the shift switch circuit, or issues with the transmission control module.

4. How can I diagnose the OBDII code P0826 in my 2016 GMC Sierra?

- Diagnosis typically involves using a scan tool to retrieve the trouble codes, checking the up and down shift switch for proper operation, and inspecting the wiring and connectors for any damage.

5. Can I continue driving my 2016 GMC Sierra with OBDII code P0826?

- It is not recommended to continue driving the vehicle with this code present, as it can lead to potential transmission issues and further damage if left unresolved.

6. How can I repair OBDII code P0826 in my 2016 GMC Sierra?

- Repair options may include replacing the faulty up and down shift switch, repairing or replacing damaged wiring or connectors, or reprogramming the transmission control module.

7. Is it possible to reset the OBDII code P0826 in a 2016 GMC Sierra without repairs?

- While clearing the code with a scan tool may temporarily turn off the Check Engine Light, the underlying issue causing the code will need to be addressed to prevent it from reoccurring.

8. How much does it typically cost to repair OBDII code P0826 in a 2016 GMC Sierra?

- The cost of repair can vary depending on the exact cause of the issue, but it may range from a few hundred to a few thousand dollars, including parts and labor.

9. Can a DIY enthusiast fix OBDII code P0826 in a 2016 GMC Sierra?

- While some simple repairs like checking and replacing the up and down shift switch may be possible for DIY enthusiasts, more complex issues with wiring or the transmission control module may require professional assistance.

10. How long does it take to repair OBDII code P0826 in a 2016 GMC Sierra?

- The repair time can vary depending on the exact cause of the issue and the extent of repairs needed, but it may take anywhere from a few hours to a full day to address the problem effectively.