General Motors has issued a serious safety recall and \u201cDo Not Drive\u201d warning affecting a small number of 4WD and AWD Cadillac, Chevrolet, and GMC vehicles after discovering a defect that could cause the front or rear wheels to lock up without warning while driving.<\/p>\n\n\n\n
The issue centers around defective transfer case assemblies that may have been built without a critical oil pickup tube \u2014 a component necessary to properly lubricate internal bearings inside the transfer case. Without lubrication, the transfer case can fail suddenly, potentially causing wheel lock-up and increasing the risk of a crash.<\/p>\n\n\n\n
The recall impacts certain:<\/p>\n\n\n\n
The recall also includes certain 2015\u20132020 model year:<\/p>\n\n\n\n
Only vehicles equipped with four-wheel drive (4WD) or all-wheel drive (AWD) are affected. Rear-wheel-drive-only vehicles do not use the same transfer case and are not included in the recall.<\/p>\n\n\n\n
According to GM\u2019s defect report, the issue stems from manufacturing errors at a supplier facility during assembly line process changes.<\/p>\n\n\n\n
GM says standardized assembly procedures and quality control protocols were not properly followed, allowing some transfer case assemblies to leave the factory without the oil pickup tube installed. Normally, built-in error-proofing systems would detect and reject incomplete assemblies, but those safeguards were bypassed.<\/p>\n\n\n\n
Without the oil pickup tube:<\/p>\n\n\n\n
GM says some drivers may notice a grinding sound before the wheels lock up. However, the wheel lock-up could also occur with little or no warning. A sudden wheel lock-up at highway speeds could result in loss of vehicle control and significantly increase the risk of a crash.<\/p>\n\n\n\n
The issue first came to light on April 14, 2026, when a GM engineer submitted a report through the company\u2019s Speak Up For Safety (SUFS) program after reviewing a failed transfer case from a 2026 Chevrolet Silverado 1500 that experienced wheel lock-up in a parking lot.<\/p>\n\n\n\n
A teardown inspection revealed the transfer case was missing the oil pickup tube entirely.<\/p>\n\n\n\n
GM officially opened a product investigation on April 17, 2026.<\/p>\n\n\n\n
Using supplier end-of-line torque testing data, GM identified:<\/p>\n\n\n\n
GM\u2019s investigation identified four field complaints potentially related to the defect. At this time, GM says it is not aware of any crashes or injuries linked to the issue. GM\u2019s Safety Field Action Decision Authority approved the recall on April 30, 2026.<\/p>\n\n\n\n
GM is urging affected owners not to drive their vehicles until the recall inspection and repair have been completed. Owner notification letters are expected to begin mailing on June 22, 2026.<\/p>\n\n\n\n
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General Motors has issued a serious safety recall and \u201cDo Not Drive\u201d warning affecting a small number of 4WD and AWD Cadillac, Chevrolet, and GMC vehicles after discovering a defect that could cause the front or rear wheels to lock up without warning while driving. The issue centers around defective transfer case assemblies that may… Continue reading