P2733 code meaning
Pressure Control Solenoid F Stuck On
Powertrain system Generic code P27xx codes Check engine light
What P2733 means
P2733 is the reverse case of P2732: valve F keeps pressure on its clutch after the TCM has commanded it off, so the off-going element still carries torque during the shift. GM checks this on its nine-speed units by watching C6 slip while shifting. If slip stays below 50 rpm for 0.8 s during power downshifts or 0.15 s on any other shift, one failure is counted; three of them give a Type A fault in one trip (18OBDG04, 20OBDG03A). GM shares the logic with P2731, which covers the same check in first gear. Bulletin 21-NA-169 for low-mileage 9T45/50/60 units lists P2731 to P2733 together and, with clean fluid, renews the solenoid assembly together with the valve body. Drivers notice tie-up, flare or harsh shifts.
P2733 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyWorkshop only
- Typical labor2 to 14 hours
- Clears after repairAfter a drive cycle
Symptoms of P2733
- Tie-up or bind-up feel during shifts
- Harsh shifts or engine flare
- MIL on and fail-safe gear
Common causes of P2733
- Most likelySolenoid F held open mechanically (solenoid body)
- PossibleDebris holding the regulator valve in the apply position
- Less likelyRestricted clutch exhaust passage
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Pressure control solenoid fValve body
What each part of P2733 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 2 | Generic code (second SAE range): it means the same on every make. |
| 7 | Area: transmission. |
| 33 | The exact fault in that area. |
What to do next
- Note P2733 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about P2733
What does P2733 mean?
P2733 means "Pressure Control Solenoid F Stuck On". P2733 is the reverse case of P2732: valve F keeps pressure on its clutch after the TCM has commanded it off, so the off-going element still carries torque during the shift. It is a generic code, so it means the same on every make.
Is it safe to drive with P2733?
Drive gently and only to a workshop. With P2733 the car can go into limp mode (reduced power) to protect itself.
Will P2733 fail an emissions test?
Yes, it can. P2733 is emissions-related, so most inspection programs fail a car while it is stored or while the check engine light is on.
How hard is P2733 to fix?
Difficulty: workshop only. A typical repair takes 2 to 14 hours of work. This is a job for a workshop.
Will P2733 clear itself after the repair?
After the repair the car has to complete a drive cycle (a mix of city and highway driving) before the test runs again. Until then the readiness monitor shows "not ready", which can fail an inspection.