Chevrolet Silverado 1500 2019–2023 — technical service bulletin
Bulletin PIT5819A · NHTSA communication 10231625 · issued Jan 5, 2023
Technical service bulletin
communication type
Engine and Engine Cooling
component
2019–2023
model years
10
vehicle entries
Official summary
This Preliminary information communicates in temperatures below freezing, it may be noticed that exhaust is only exiting from the right hand exhaust tailpipe. The cause of this condition is a low point in left side tailpipe which results in condensation building up at the low point in the tailpipe. In low temperatures the condensation can freeze and form ice limiting the flow of exhaust out of the left tailpipe. Dealers are to drill a small hole in the left tailpipe to allow condensation to drain.
Vehicles covered
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.