WenmarOpen by Wenmar Pro

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.

By type

By component

By trouble code

By topic

Bulletins, newest first
16NA3832019-07-01. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. This informational bulletin advises of a new fuel injection kit used for decarbonizing the intake valves, and explains how toptier fuels should be used to reduce carbon build up.
16NA1192019-07-01. Service bulletin. EQUIPMENT. This warranty administration bulletin provide policy information to cover GM's policy on performing GM covered vehicle services and maintenance on vehicles originating/sold in Canada.
19NA1112019-07-01. Service bulletin. EQUIPMENT. This technical bulletin provides repair information to correct a customer concern of hearing a ticking noise coming from upper B-pillar area.
080089014E2019-07-01. Service bulletin. EQUIPMENT. This informational bulletin provides information for dealers/technicians on Use of Dealer Case Management (DCM) and Being Prepared for Contacting U.S. Technical Assistance (TAC).
000310006N2019-07-01. Service bulletin. TIRES. This informational bulletin provides information for dealers/technicians on Tire Radial Force Variation (RFV).
19NA1112019-07-01. Service bulletin. EQUIPMENT. This technical bulletin provides repair information to correct a customer concern of hearing a ticking noise coming from upper B-pillar area.
19NA0922019-07-01. Service bulletin. BACK OVER PREVENTION; LANE DEPARTURE. This technical bulletin provides repair information to correct a customer concern of Rear Park Assist Inoperable.
18NA2792019-07-01. Service bulletin. STRUCTURE:BODY:DOOR; LATCHES/LOCKS/LINKAGES; STRUCTURE. This informational bulletin provides information for dealers/technicians on the process to disable and enable passive unlocking.
N192214590 012019-06-24. Service bulletin. ENGINE AND ENGINE COOLING. Service Update - Revised to add Traverse. Certain vehicles may not have the snow/ice mode calibration enabled. This missing calibration results in the selection of snow/ice mode (knob selector) not having a change in the accelerator pedal response. Reprogram the engine control module (ECM).
PIC63652019-06-10. Service bulletin. EQUIPMENT. This Preliminary information communicates information to dealers advising certain Over the air updates and USB updates have been temporarily suspended.
PIT5655B2019-06-10. Service bulletin. EQUIPMENT. This Preliminary information communicates that a customer may complain of when a Bluetooth call is received the ringing will be continuous for the rest of the drive cycle . It may be noted that this only seems to occur when using an Android device on OS 9.0. This may be caused by a software concern in the phone. The dealer is instructed that the phone manufacturer is working on a software update to resolve the concern.
PIT56842019-06-10. Service bulletin. ELECTRICAL SYSTEM. This Preliminary information communicates information for terminal concerns at X203
PIT5662B2019-06-10. Service bulletin. PARKING BRAKE. This Preliminary information communicates information to diagnose DTC C056D or C056E.
PIT56792019-06-10. Service bulletin. ELECTRICAL SYSTEM. This Preliminary information communicates that a vehicle may be encountered with a "service park assist system" message or a rear lift gate that will not open passively. The technician is instructed to inspect connector X400 for evidence of water intrusion. The technician is instructed to replace the harness and terminals in the body side connector as needed if water intrusion or corrosion is found.
PIT56732019-06-03. Service bulletin. EXTERIOR LIGHTING. This Preliminary information communicates information for Intellibeam headlamp inoperative and to inspect the low speed data line.
PIT56702019-06-03. Service bulletin. ELECTRICAL SYSTEM. This Preliminary information communicates that a vehicle may come to the dealer with a "service driver assist system" message. The technician may find codes B101D and or B390C. If this condition is found the technician is instructed to check the Long Range Radar Module (LRRM) bracket for being loose. Tech is instructed to attempt to move the LRRM by hand and if movement is felt he is instructed to adjust the LRRM mounting bracket, properly tighten the bolts and perform a LRRM learn procedure.
PIT5659B2019-06-03. 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.
19NA0762019-05-28. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM; BACK OVER PREVENTION: SENSING SYSTEM: CAMERA; EQUIPMENT ADAPTIVE/MOBILITY. This technical bulletin provides repair information to correct a customer concern of Blue Screen and Service Rear Vision System Message on Radio Display.
19NA0702019-05-28. Service bulletin. SUSPENSION. This technical bulletin provides repair information to correct a customer concern of hearing a squeaking/creaking noise coming from the rear suspension when driving on rough roads or over bumps.
PIE0520A2019-05-20. Service bulletin. VISIBILITY:SUN/MOON ROOF ASSEMBLY. This engineering informational bulletin is requesting information to notify the dealership personnel not to relearn the sunroof module and to contact the engineer for further instructions. This revision removes the Breakpoint information.
PIE05202019-05-20. Service bulletin. VISIBILITY:SUN/MOON ROOF ASSEMBLY. This engineering informational bulletin is requesting information to notify the dealership personnel not to relearn the sunroof module and to contact the engineer for further instructions.
1008110001H2019-05-20. Service bulletin. EQUIPMENT. This informational bulletin provides information on proper use of floor mats.
030729004L2019-05-20. Service bulletin. POWER TRAIN:MANUAL TRANSMISSION; EQUIPMENT. This informational bulletin provides normal operating characteristics and diagnostic information on Manual transmissions.
030603004Y2019-05-20. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. This warranty administration bulletin provides policy information on the requirements for battery testing and warranty replacements.
N1922145902019-05-20. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. Service Update. Certain vehicles may not have the snow/ice mode calibration enabled. This missing calibration results in the selection of snow/ice mode (knob selector) not having a change in the accelerator pedal response. Reprogram the engine control module (ECM).

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.