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AutoCodes – GMC – P0758 GMC

P0758 GMC Code - 2-3 Shift Solenoid Circuit Electrical

Quick Answer

The 2-3 Shift Solenoid (SS) valve controls the fluid flow acting on the 2-3 shift valves. Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty 2-3 Shift Solenoid Valve. 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
P0758 GMC indicates 2-3 Shift Solenoid Circuit Electrical.
Common causes
Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty 2-3 Shift Solenoid Valve.
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 12,871
How popular is this code, among other codes? Low
What is this?
Table of contents Created and updated by William Orellana on Jun 26, 2020
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Code P0758 GMC Description

The 2-3 Shift Solenoid (SS) valve controls the fluid flow acting on the 2-3 shift valves. The 2-3 SS valve is a normally-open exhaust valve that is used with the 1-2 SS valve in order to allow four different shifting combinations. The solenoid attaches to the control valve body within the transmission. The Powertrain Control Module (PCM) controls the solenoid by providing the ground path. When the Powertrain Control Module (PCM) detects a continuous open, short to ground or short to power in the 2-3 Shift Solenoid (SS) valve circuit, then Diagnostic Trouble Code (DTC) P0758 sets.
OBDII Code P0758 GMC - 2-3 Shift Solenoid Circuit Electrical - AutoCodes.com
P0758 GMC Code - 2-3 Shift Solenoid Circuit Electrical
What does this mean?

What are the Possible Causes of the DTC P0758 GMC?

  • Low transmission fluid level
  • Dirty transmission fluid
  • Faulty 2-3 Shift Solenoid Valve
  • 2-3 Shift Solenoid Valve harness or connectors
  • 2-3 Shift Solenoid Valve circuit is open or shorted

How to Fix the DTC P0758 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 P0758 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 P0758 GMC code?

Need more information on how to fix the P0758 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 P0758 GMC Code

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