Table 1 shows one common other fuel system related problems of the 2023 Buick Enclave.
| Problem Category | Number of Problems |
|---|---|
| Other Fuel System problems |
After purchasing this 2023 Buick Enclave July 26, 2026 two days later I heard a vibrating rattle coming from under the hood. I raised the hood and pinpointed the noise to be coming from under the motor cover. I could not remove that cover myself. I reported it to the dealership where I bought it and they said when I bring it in to have the paint and interior, protection to be applied that they would take a look for that rattle sound. After their inspection on 9/16/26 they called me back and said that it was the evap purge solenoid tube. And that the fix would be to put two rubber dampeners onto the purge tube line to isolate the vibrations and stop it from hitting other engine components. Then secure the dampeners with tie straps. They wanted to charge me $331 to do that. I said I’m not paying that so I proceeded to look up this information online and I found there’s an actual technical service bulletin. It’s not an official safety recall but gm is aware of it and the bulletin number is 21 – na – 023. So I spoke with my bumper-to-bumper warranty people and they said that if the actual purge valve piece was not broken, then it would be most likely at my expense. The noise is caused by fuel vapor pulsations vibrating through the evap purge solenoid tube. The symptom: drivers typically notice a rapid clicking or rattling sound under the hood, which can sometimes be mistaken for engine knock or failing engine mounts. Note on code: this specific bulletin is strictly a noise concern and does not trigger a check engine light or throw trouble codes like p0496 on its own. The notice from gm also states that if a vehicle is still covered under its factory, bumper-to-bumper or emissions warranty, the repair should be completed free of charge. If you are out of warranty, you may be subject to diagnostic fees or out-of-pocket cost for the fix. After speaking with the service department at that dealership, they said that they were not going to replace the purge valve.
The transmission hesitates and momentarily loses propulsion when accelerating out a low speed right hand turn, creating a risk of a rear - end collision. It also shudders at low speeds when accelerating up hill, or when passing vehicles on the highway. After the transmission has reached operating temperature and has been driven for a while, it starts to shift harsh and erratically in the lower gears, at lower speeds. There is a service bulletin out for this issue on my vehicle and the first step of the bulletin was performed and has failed. It has been in the shop several times for this intermittent and ongoing issue. The service bulletin # 23-na-072. I have repair invoices for each time it was in the shop. It is currently back in the shop and has been for almost 2 weeks. The problem was reproduced the first time at the time of the initial start of repairs, but they haven't duplicated it since. There has never been any warning lights, messages or codes that have appeared in my vehicle when this issue arises. The issue first appeared within 4 days of me purchasing it in July of this year, 2026 and was communicated promptly.
Vehicle lost power and stalled on interstate hwy 07/29/2023. Gm dealer heartland chevy in liberty mo. Repaired replacing fuel tank and sensor due to failed sensor in tank. 08/08/2023 vehicle again for 2nd time rough idling and staling out several times on hwy. Currently at dealer who diagnosed with fuel sensor issue and still at dealer. Vehicle has approx. 20,000 miles 2023 Buick Enclave.