P0756: Shift Solenoid B Performance/Stuck Off
5 vehicles · 4 makes · $150-$6,500 repair
Most Reported On
P0756 is an OBD-II diagnostic trouble code meaning “Shift Solenoid B Performance/Stuck Off.” This code means the transmission control module commanded Shift Solenoid B (sometimes called Shift Solenoid 2) to operate, but the transmission did not respond as expected, with the solenoid behaving as if it is stuck in the 'off' position. Shift solenoids are electrically controlled valves that route transmission fluid pressure to engage the correct gears, so a stuck or weak solenoid can cause harsh, delayed, or missed shifts. The computer sets this code when the actual gear ratio or shift timing does not match what it commanded. It generally points to a hydraulic or electrical performance problem inside the automatic transmission rather than a simple wiring short. This code is most commonly reported on 2019-2024 Chevrolet Blazer, 2013-2016 Chevrolet Malibu, and 2008-2012 Buick Enclave, plus 2 other vehicles, with repair costs ranging from $150 to $6,500.
Common Causes
Typical Repair Cost
Based on 5 documented vehicle-specific issues. Actual cost depends on root cause and vehicle.
Diagnostic Tools
To diagnose P0756, you'll need an OBD-II scanner. Here are our recommendations at every price point.
ANCEL AD310 Classic OBD-II Scanner
by ANCEL
A simple, affordable code reader that reads and clears check engine codes. Great for quick diagnostics on any OBD-II vehicle (1996+).
- Read & clear engine codes
- View freeze frame data
- I/M readiness status
- No batteries or app needed
BlueDriver Pro Bluetooth Scanner
by BlueDriver
Bluetooth OBD-II scanner with a free companion app. Provides enhanced diagnostics, smog readiness, and repair reports sourced from a database of verified fixes.
- Enhanced diagnostics (ABS, SRS, transmission)
- Repair Reports with verified fixes
- Smog check readiness
- Free app (iOS & Android)
LAUNCH CRP123X OBD-II Scanner
by LAUNCH
A professional-grade handheld scanner that reads all four major systems (engine, transmission, ABS, SRS) with live data streaming and graphing.
- Engine, transmission, ABS, SRS diagnostics
- Live data stream & graphing
- AutoVIN for vehicle identification
- Free lifetime updates via Wi-Fi
Autel MaxiCOM MK808S Diagnostic Tool
by Autel
Shop-level diagnostic tablet with bi-directional control, active tests, and full system coverage. Ideal for serious DIYers and small shops.
- All-system diagnostics (25+ modules)
- Bi-directional control & active tests
- Oil reset, EPB, BMS, TPMS, injector coding
- 7-inch touchscreen with Android OS
As an Amazon Associate, we earn from qualifying purchases. Prices are approximate and may vary.
Vehicles Affected (5)
FAQ
What does P0756 mean?
P0756 stands for "Shift Solenoid B Performance/Stuck Off." This code means the transmission control module commanded Shift Solenoid B (sometimes called Shift Solenoid 2) to operate, but the transmission did not respond as expected, with the solenoid behaving as if it is stuck in the 'off' position. Shift solenoids are electrically controlled valves that route transmission fluid pressure to engage the correct gears, so a stuck or weak solenoid can cause harsh, delayed, or missed shifts. The computer sets this code when the actual gear ratio or shift timing does not match what it commanded. It generally points to a hydraulic or electrical performance problem inside the automatic transmission rather than a simple wiring short.
What are the most common causes of P0756?
The most common causes of P0756 are: Stuck or failed Shift Solenoid B, Low, dirty, or degraded transmission fluid, Clogged solenoid or valve body passages from debris, Worn or sticking valve body components, Wiring or connector fault to the solenoid, Internal transmission wear or mechanical damage, Faulty transmission control module. The specific cause varies by vehicle.
How much does it cost to fix P0756?
Repair costs for P0756 range from $150 to $6,500, depending on the vehicle and root cause.
Which vehicles are affected by P0756?
Au7o has documented P0756 across 5 vehicle models from 4 manufacturers: Buick, Chevrolet, Ford, Pontiac.
Sources (12)
- NHTSANHTSA Vehicle Complaints for 2019 Chevrolet Blazer
- ForumReddit r/MechanicAdvice thread discussing 2019 Chevy Blazer 9-speed transmission shudder
- video6T40 Transmission Shudder Fix - Chevrolet Malibu 2013-2016 by EricTheCarGuy
- articleBuick Enclave Transmission Problems: Known Failures and Fixes - Cherish Your Car
- articleBuick Enclave Transmission Problems & Cost (6T75E) - Transmission Repair Cost Guide
- ForumGeneral Info on the 6T75 Transmission - EnclaveForum.net
- TSBTSB - 8F35 Transmission Slipping/Harsh Engagement (Output Planet Carrier)
- TSB8F35 Transmission Shudder/Buck/Jerk While Driving Up To 35 MPH - PCM reprogram
- media8F35 Transmission - Shudder/Buck/Jerk - Ford Edge/Nautilus TSB detail
- mediaFord Maverick Transmission Problems: Failures, Recalls & Fixes
- articleTransmission Pressure Control Solenoid Failure May Cause Erratic Shifting - RepairPal
- Forum4T65E Hard Shift - Solution - Grand Prix Forums
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.