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Service bulletins for the 2021 Chevrolet Suburban

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.

1440 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

By topic

Bulletins, newest first
16NA2222020-11-30. Service bulletin. ENGINE. This bulletin provides information on Engine Concerns that could result from lack of scheduled maintenance, improper service or aftermarket calibrations.
PIT5776A2020-11-16. Service bulletin. ELECTRICAL SYSTEM; STRUCTURE:BODY:HATCHBACK/LIFTGATE. This Preliminary information communicates an issue with the power liftgate inoperative and engineering working on the issue.
PIT57892020-11-16. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM:PUMP; ELECTRICAL SYSTEM:SOFTWARE. This Preliminary information communicates an issues with an SES MIL and DTC P2B87 setting. Engineering is working on releasing updated BCM cals to correct the concern.
PIP5752F2020-11-16. Service bulletin. ENGINE AND ENGINE COOLING. This Preliminary information communicates A Vehicle may have a concern of service engine light, misfire and engine noise with possible of DTC P0300 P0106 P0506, Possible valve spring concern
PIT57882020-11-16. Service bulletin. ELECTRICAL SYSTEM. This Preliminary information communicates an issue with a low or dead battery issue cause by the rear hvac door being jammed by an foreign object.
PIT5759H2020-11-16. Service bulletin. AIR BAGS. This Preliminary information communicates an issue with the SIR MIL turning on and DTC B14DC setting caused by high resistance at the F106DA Driver's front seat inboard air bag connector. Dealers are to replace the F106DA Driver's front seat inboard air bag connector pigtail.
PIP5752E2020-11-16. Service bulletin. ENGINE AND ENGINE COOLING. This Preliminary information communicates A Vehicle may have a concern of service engine light, misfire and engine noise with possible of DTC P0300 P0106 P0506, Possible valve spring concern
PIT5759G2020-11-16. Service bulletin. SEATS. This Preliminary information communicates an issue with the SIR MIL turning on and DTC B14DC setting caused by high resistance at the F106DA Driver's front seat inboard air bag connector. Dealers are to replace the F106DA Driver's front seat inboard air bag connector pigtail.
PIP5752D2020-11-16. Service bulletin. ENGINE AND ENGINE COOLING. This Preliminary information communicates A Vehicle may have a concern of service engine light, misfire and engine noise with possible of DTC P0300 P0106 P0506, Possible valve spring concern
PIP57592020-11-16. Service bulletin. ENGINE AND ENGINE COOLING. This Preliminary information communicates 6.2L engine restriction, Contact TAC
PIT57872020-11-16. Service bulletin. ELECTRICAL SYSTEM. This Preliminary information communicates an issue with the 110 volt power outlets turning off during an Auto Stop event, which is normal operation.
PIT57862020-11-16. Service bulletin. EQUIPMENT. This Preliminary information communicates how to enable the power retractable assist steps during PDI.
PIT5759F2020-11-16. Service bulletin. AIR BAGS. This Preliminary information communicates an issue with the SIR MIL turning on and DTC B14DC setting caused by high resistance at the F106DA Driver's front seat inboard air bag connector. Dealers are to replace the F106DA Driver's front seat inboard air bag connector pigtail.
PIP5752C2020-11-16. Service bulletin. ENGINE AND ENGINE COOLING. This Preliminary information communicates A Vehicle may have a concern of service engine light, misfire and engine noise with possible of DTC P0300 P0106 P0506, Possible valve spring concern
PIT5773B2020-11-16. Service bulletin. SEATS. This Preliminary information communicates an issue with the 3rd Row Seat Headrest not returning to the upright position after cycling the seat and to install a headrest repair kit.
PIP5752B2020-11-16. Service bulletin. ENGINE AND ENGINE COOLING. This Preliminary information communicates A Vehicle may have a concern of service engine light, misfire and engine noise with possible of DTC P0300 P0106 P0506, Possible valve spring concern
PIT57662020-11-16. Service bulletin. ELECTRICAL SYSTEM. This Preliminary information communicates there is a Part Restriction for the Automatic Leveling Control Module and to contact the PQC to order the part.
PIP5738A2020-11-16. Service bulletin. POWER TRAIN. This Preliminary information communicates to the dealer technician that the 10L80 transmission has been place on a part restriction. Dealers are to contact the Product Quality Center before replacing the transmission assembly.
PIT5779A2020-11-16. Service bulletin. EQUIPMENT:ELECTRICAL. This Preliminary information communicates an issue with the 110 volt power outlets not resetting if overloaded and causing the customer to take the vehicle to the dealership to have it reset. Engineering is working on a new cal.
PIT5551F2020-11-16. Service bulletin. FORWARD COLLISION AVOIDANCE. This Preliminary information communicates a "Forward Collision System Reduced" message displayed on the DIC when the Forward Automatic Braking has been set to the "Alert" setting. This is normal when the FAB has been set to "Alert".
PIT57842020-11-16. Service bulletin. EQUIPMENT. This Preliminary information communicates and issue with customers misunderstanding weather they need to bluetooth pair the factory provided headphones.
PIP57312020-11-16. Service bulletin. ELECTRICAL SYSTEM. This Preliminary information communicates During inspection of the vehicle for an unrelated concern the technician may notice that one or more of the following Cylinder Deactivation Performance DTC(s) P3498, P3499, P349A, P349B, P349C, P349D, P349E, or P349F may be set in history. and not requesting MIL. If any of these DTCs are requesting the MIL, please follow appropriate service information for diagnosis & repair. This condition may be caused by the ECM hardware disabling the cylinder deactivation outputs for an ignition cycle due to low voltage transient during crank & inadvertently causing one of the DTCs to set during an ignition cycle.
PIT5773A2020-11-16. Service bulletin. SEATS. This Preliminary information communicates an issue with the 3rd Row Seat Headrest not returning to the upright position after cycling the seat and to install a headrest repair kit.
PIP5733E2020-11-16. Service bulletin. ENGINE AND ENGINE COOLING. This Preliminary information communicates Possible Crank no start or extended crank with DTC p12A6 set current or history. Under Investigation
110089005P2020-10-26. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This Warranty Administration bulletin provides information on Dealer Empowerment for Goodwill, Customer Enthusiasm and Policy (U.S. Only).

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