Chevrolet Suburban 1500 2025 — technical service bulletin
Bulletin PIT6267 · NHTSA communication 11011473 · issued Oct 28, 2024
Technical service bulletin
communication type
Suspension
component
2025
model years
4
vehicle entries
Official summary
This Preliminary information communicates a false DTC U0422 set in the K5 Automatic Level Control Module and dealership should ignore and clear the DTC. This does not cause any customer complaints, warning messages or warning indicators.
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.