The Lemon IndexThe main transmission pressure solenoid is stuck on, so shifts can be harsh. Full P0747 page
15 owner complaints · the #4 code GMC Sierra owners name · 7% of GMC Sierra complaints that name a code (every car: 0.4%)
2020–2024 GMC Sierra · most: 2023 (9), 2024 (2), 2022 (2)
GMC Sierra owners named P0747 in 15 complaints to the U.S. government (NHTSA), most often on the 2023, 2024 and 2022 model years. The part they name most is the valve body or shift solenoid (8 complaints). Complaints are owner reports, not proof of a defect.
GMC Sierra model years that report P0747
Owner complaints naming P0747, by model year. Raw counts: years that sold more get more complaints, so this is each model year's record, not a failure rate.
What owners say caused it or fixed it
The most-named part is the valve body or shift solenoid, in 8 of the 15 complaints (53%). 5 of those mention it being replaced or repaired, and 1 say the problem came back afterwards. Next: transmission computer (TCM) (2).
- Valve body or shift solenoid8 complaints5 mention a repair or replacement, 1 of them says the problem came back · what owners paid
- Transmission computer (TCM)2 complaintsnamed as the cause, no repair mentioned · what owners paid
6 complaints mention a recall and 3 mention a warranty.
Counted from the owners' own words: a part counts when a sentence names it with a cause or repair word. What owners wrote, not a diagnosis. A shop should confirm the cause before replacing parts.
Symptoms owners describe with P0747
53% of these complaints say the check engine light came on.
- Loses power or goes into limp mode60%9 of 15 complaints
- Transmission slips or shifts hard20%3 of 15 complaints
Share of the complaints naming P0747 whose text also describes each problem. A complaint can describe more than one.
Codes owners report with it
P0700 9
Other codes named in the same GMC Sierra complaints, and in how many.
Recalls on these GMC Sierra years
- Transmission & drivetrain · 2020, 2022 · issued 2026
The transmission control valve may fail and cause the rear wheels to lock up. NHTSA 26V083000 - Transmission & drivetrain · 2020, 2022 · issued 2024
The transmission control valve may fail and cause the rear wheels to lock-up. NHTSA 24V797000 - Transmission & drivetrain · 2020 · issued 2020
One of the driveshaft joints may not have been properly welded, causing the driveshaft to separate while the vehicle is moving. NHTSA 20V650000
3 recalls for the same systems (powertrain) on the GMC Sierra model years above. A recall for the same system isn't proof it's behind P0747. Recall work is free at any dealer: check a VIN at nhtsa.gov/recalls or with our VIN check.
Keep going
- P0747: meaning, causes and every car that reports it
- GMC Sierra reliability by year
- 2023 GMC Sierra problems and recalls
Other codes GMC Sierra owners report
P0747 on other cars
Chevrolet Silverado (27)
The details
How we count
We read every owner complaint in the NHTSA file whose text names this trouble code, and count the ones filed about this model (matched by the make, model and model year on the complaint). Mileage is what the owner entered on the form.
Parts: a complaint counts for a part when one of the owner's own sentences names that part together with a cause word (failed, bad, diagnosed, caused by, leaking ...) or a repair word (replaced, repaired, new, reprogrammed ...). "Came back" means the same complaint also says the problem returned or the repair didn't fix it. These are counts of what owners wrote, not a diagnosis, and one complaint can name several parts.
Complaints are reports, not proof of a defect, and most owners never file one. Popular models get more complaints, so the counts are not a failure rate. The code meaning is the standard SAE J2012 definition in our own words, or the carmaker's meaning where we verified it for that make.
What P0747 means
The main transmission pressure solenoid is stuck on, so shifts can be harsh.
Fix soon. Book a shop visit this week. Stop driving if the car slips, shakes, overheats or warns you.
- Stuck pressure control solenoid
- Dirty fluid
Check the complaints yourself
NHTSA complaint numbers (search them at nhtsa.gov): 11758664, 11753659, 11753509, 11748895, 11740403, 11725965, 11723417, 11711114, 11708577, 11668939, 11663303, 11651812 and 3 more.
Quick answers
What does P0747 mean on a GMC Sierra?
Pressure Control Solenoid A Stuck On. The main transmission pressure solenoid is stuck on, so shifts can be harsh.
Which GMC Sierra years have the most P0747 complaints?
In complaints to NHTSA, owners of the 2023 (9), 2024 (2), 2022 (2) GMC Sierra named P0747 most (15 complaints in all, 2020–2024). Raw counts, not a failure rate.
What fixes P0747 on a GMC Sierra?
Owners most often name the valve body or shift solenoid (8 of 15 complaints), then transmission computer (TCM). That's what owners wrote, not a diagnosis: have a shop confirm the cause with a scan and tests before replacing parts.
Can I drive my GMC Sierra with P0747?
Fix soon. Book a shop visit this week. Stop driving if the car slips, shakes, overheats or warns you.
Sources: NHTSA owner complaints that name P0747 on the GMC Sierra, counted by The Lemon Index; NHTSA recalls; repair bills owners named. Meanings: SAE J2012 in our own words. Owner reports, not a diagnosis or repair advice for your car.