Sierra 2500 transmission valve body faults on 2023 and 2024 trucks

Owner reportTransmission

Symptoms: NHTSA complaint ODI 11759764, on a 2024 GMC Sierra 2500, says the control valve body failed, the truck went into limp mode at 34,000 miles, and the shop had many of the same year waiting on the same repair. Complaint ODI 11711040 says the transmission made a loud noise and speed dropped in traffic, the truck had to be towed, and the initial diagnosis was the valve body. On a Duramax forum list of 10L1000 failures, a 2023 Sierra 2500HD owner writes that the truck gave what the post calls a shutter from 5th to 6th and from 6th to 7th, set codes P0700 and P0747, downshifted to 5th, and would not leave 5th. The owner describes pavement miles and very light towing, at 34,000 miles, with a build date of January 14, 2023. A later post says the valve body arrived and the truck was fixed on July 23, 2025. The same list includes 2024 Chevrolet Silverado 2500HD and 3500 reports of limp mode and valve-body replacement, including one 2024 3500 that banged while towing a 24,000-pound RV. NHTSA complaints on the 2024 Silverado 2500, including ODI 11673856, describe a valve-body diagnosis while towing, with codes P0747 and P0700.
Likely causes: The Sierra complaints say the valve body failed or was the initial diagnosis. The 2023 forum post names codes P0700 and P0747 and a valve body on order. The posts do not include a measured reason the valve stuck. A reply on the forum guesses heat and heavy trailering, and another reply says the reports in view were not all from heavy towing.
Common fixes: The 2024 complaints describe the truck waiting on a valve body at a dealer. The 2023 Sierra owner wrote that the part arrived and the truck was repaired on July 23, 2025. Silverado complaints in the same discussion describe dealers installing a replacement valve body, including part 24065357. These are owner accounts of dealer work.
DIY difficulty: Not a DIY job in these sources. The reports describe a dealer replacing the valve body.
Parts needed: The Sierra complaints and the 2023 Sierra forum post say a valve body and do not give a part number. A 2024 Silverado complaint and a 2024 3500 forum post name part 24065357.
Warranty notes: The complaints describe dealer diagnosis and a parts wait. They do not identify a recall campaign. The 2023 forum post does not say who paid. A complaint is not a coverage decision for another Sierra. Chevrolet Silverado 2500 complaints from 2024 are on that model's page.

Sources

Official recalls for the 2023 GMC Sierra 2500

Owner reportTransmission

Symptoms

NHTSA complaint ODI 11759764, on a 2024 GMC Sierra 2500, says the control valve body failed, the truck went into limp mode at 34,000 miles, and the shop had many of the same year waiting on the same repair. Complaint ODI 11711040 says the transmission made a loud noise and speed dropped in traffic, the truck had to be towed, and the initial diagnosis was the valve body. On a Duramax forum list of 10L1000 failures, a 2023 Sierra 2500HD owner writes that the truck gave what the post calls a shutter from 5th to 6th and from 6th to 7th, set codes P0700 and P0747, downshifted to 5th, and would not leave 5th. The owner describes pavement miles and very light towing, at 34,000 miles, with a build date of January 14, 2023. A later post says the valve body arrived and the truck was fixed on July 23, 2025. The same list includes 2024 Chevrolet Silverado 2500HD and 3500 reports of limp mode and valve-body replacement, including one 2024 3500 that banged while towing a 24,000-pound RV. NHTSA complaints on the 2024 Silverado 2500, including ODI 11673856, describe a valve-body diagnosis while towing, with codes P0747 and P0700.

Likely causes

The Sierra complaints say the valve body failed or was the initial diagnosis. The 2023 forum post names codes P0700 and P0747 and a valve body on order. The posts do not include a measured reason the valve stuck. A reply on the forum guesses heat and heavy trailering, and another reply says the reports in view were not all from heavy towing.

Common fixes

The 2024 complaints describe the truck waiting on a valve body at a dealer. The 2023 Sierra owner wrote that the part arrived and the truck was repaired on July 23, 2025. Silverado complaints in the same discussion describe dealers installing a replacement valve body, including part 24065357. These are owner accounts of dealer work.

DIY difficulty

Not a DIY job in these sources. The reports describe a dealer replacing the valve body.

Parts needed

The Sierra complaints and the 2023 Sierra forum post say a valve body and do not give a part number. A 2024 Silverado complaint and a 2024 3500 forum post name part 24065357.

Warranty notes

The complaints describe dealer diagnosis and a parts wait. They do not identify a recall campaign. The 2023 forum post does not say who paid. A complaint is not a coverage decision for another Sierra. Chevrolet Silverado 2500 complaints from 2024 are on that model's page.

Sierra 2500 transmission valve body faults on 2023 and 2024 trucks

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Sierra 2500 transmission valve body faults on 2023 and 2024 trucks

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Related