Service bulletins for the 2019 Chevrolet Blazer
A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.
848 on file from NHTSA, as of 2026-10-19.
About B3920 on the 2019 Chevrolet Blazer: what the code means, and the bulletins and recalls about the same components.
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By component
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Only bulletins with trouble code: B3920 are shown. Show all
| PIT5659C | 2019-07-08. Service bulletin. SEATS. This Preliminary information communicates that a vehicle may be brought to the dealer with a complaint that the driver's side power seat will not move at times. The dealer technician may find a code B3920. The technician is instructed to inspect the seat harness beneath the driver's seat for being pinched between the memory seat module bracket and the seat frame tube. If damage is found to the harness the technician is instructed to repair or replace the harness as needed and reroute it to avoid future damage to the harness. |
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| PIT5659B | 2019-06-03. Service bulletin. SEATS. This Preliminary information communicates that a vehicle may be brought to the dealer with a complaint that the driver's side power seat will not move at times. The dealer technician may find a code B3920. The technician is instructed to inspect the seat harness beneath the driver's seat for being pinched between the memory seat module bracket and the seat frame tube. If damage is found to the harness the technician is instructed to repair or replace the harness as needed and reroute it to avoid future damage to the harness. If the harness is found to be routed correctly the technician is instructed to inspect X500 for being not fully seated and allowing water intrusion into the connector. Technician is instructed to replace terminals as necessary if water damage is found in X500. |
| PIT5659 | 2019-04-08. Service bulletin. SEATS. This Preliminary information communicates that a vehicle may be brought to the dealer with a complaint that the driver's side power seat will not move at times. The dealer technician may find a code B3920. The technician is instructed to inspect the seat harness beneath the driver's seat for being pinched between the memory seat module bracket and the seat frame tube. If damage is found to the harness the technician is instructed to repair or replace the harness as needed and reroute it to avoid future damage to the harness. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.