Service bulletins for the 2021 Chevrolet Tahoe
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.
1477 on file from NHTSA, as of 2026-10-19.
By type
By component
By trouble code
By topic
| PIT5765 | 2021-02-16. Service bulletin. WHEELS; BACK OVER PREVENTION. This Preliminary information communicates that some customers may comment on a rattle, flutter, flapping, and/or wind type noise from the front end caused by either the left or right front inner wheel well liner having excessive movement. |
|---|---|
| PIT5773C | 2021-02-16. Service bulletin. SEATS:MID/REAR ASSEMBLY. 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. |
| PIT5799A | 2021-02-16. Service bulletin. ELECTRICAL SYSTEM. This Preliminary information communicates a cocnern where a flashing spot can intermittently show up on the radio display while in reverse. The PI advises that engineering is investigating the concern. |
| PIT5779E | 2021-02-16. Service bulletin. POWER TRAIN. 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 has released updated cals to correct this concern. |
| PIT5802 | 2021-02-16. Service bulletin. EQUIPMENT. This Preliminary information communicates an issue with the floor center console cooler being inoperative and engineering working on a root cause. |
| PIT5751C | 2021-02-16. Service bulletin. ELECTRICAL SYSTEM. This Preliminary information communicates and issue with the SES MIL on setting DTC's P0201/P0202/P0203/P0204/P0205/P0206/P0216 and instructing dealership to inspect the engine wiring harness for damage. |
| PIT5479D | 2021-02-16. Service bulletin. ENGINE AND ENGINE COOLING. This Preliminary Information communication provides information to the technician about fluid leaking from the brake caliper piston area found during a service of the vehicle. The substance is actually excess assembly grease from the caliper boot and piston installation. This grease can be cleaned off and the rest of the service completed. |
| PIP5764A | 2021-02-16. Service bulletin. EQUIPMENT. This Preliminary information communicates to the technician a possible cause of a P2B60 as terminal corrosiosn and provides a correction |
| PIP5748D | 2021-02-16. Service bulletin. BACK OVER PREVENTION. This Preliminary information communicates to the technition instructions to replace the particulate matter sensor for a P1488 and to use the special labor operation for tracking purposes. |
| PIT5779D | 2021-02-16. Service bulletin. POWER TRAIN. 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 has released updated cals to correct this concern. |
| PIT5779C | 2021-02-16. Service bulletin. POWER TRAIN. 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 has released updated cals to correct this concern. |
| PIC6423 | 2021-02-16. Service bulletin. ELECTRICAL SYSTEM. This Preliminary Information communication requests information from the technician about vehicles that may have Bluetooth or phone projection issues. Dealer should request as much information from the customer on the concern as possible and fill in the questionaire. |
| PIT5775A | 2021-02-16. Service bulletin. STEERING; SEAT BELTS. This Preliminary information communicates an issue with a service column lock message with DTC U3000 sym71,72 or 96 and engineering released updated software to correct this concern. |
| PIT5759J | 2021-02-16. Service bulletin. SEATS; AIR BAGS:FRONTAL. 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. |
| PIT5789A | 2021-02-16. Service bulletin. ELECTRICAL SYSTEM:BODY CONTROL MODULE/BCM. 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. |
| PIT5777A | 2021-02-16. Service bulletin. EXTERIOR LIGHTING; AIR BAGS. This Preliminary information communicates an issue with a Check Reverse Lamp message on the DIC, but the reverse light operate. Engineering has released updated cals to correct this concern. |
| PIT5776B | 2021-02-16. Service bulletin. POWER TRAIN. This Preliminary information communicates an issue with the power liftgate inoperative and engineering working on the issue. |
| PIT5779B | 2021-02-16. Service bulletin. POWER TRAIN. 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 has released updated cals to correct this concern. |
| PIT5787A | 2021-02-16. Service bulletin. POWER TRAIN. This Preliminary information communicates an issue with the 110 volt power outlets turning off during an Auto Stop event, which is normal operation. |
| PIE0601A | 2021-02-01. Service bulletin. ELECTRICAL SYSTEM; ENGINE. This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to the Service Engine Soon Lamp being illuminated. |
| PIE0599B | 2021-02-01. Service bulletin. AIR BAGS; ELECTRICAL SYSTEM. This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to the airbag lamp illuminated on the driver?s information center (DIC). |
| 090604026S | 2021-02-01. Service bulletin. EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY; ENGINE AND ENGINE COOLING. This bulletin provides information on identifying Non-GM Engine Calibrations for Gasoline Engines using the Tech 2 or GDS 2. |
| 040089015V | 2021-02-01. Service bulletin. EQUIPMENT. This bulletin provides information on Warranty Administration ? Required Operating Procedures - 8 Points (U.S. Only). |
| 010601011L | 2021-02-01. Service bulletin. ENGINE AND ENGINE COOLING; EQUIPMENT. This informational bulletin provides guidelines and diagnostic/repair information to technicians regarding vehicle engine oil consumption. |
| 20NA238 | 2021-02-01. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.; EQUIPMENT; ELECTRICAL SYSTEM:SOFTWARE. This service bulletin provides V153 radio software update information to correct customer concerns of various software issues. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.