# Service bulletin PIC6416A

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.

- Type: Service bulletin
- NHTSA id: 10176328
- Published by NHTSA: 2020\-06\-15
- Manufacturer's number: PIC6416A
- Manufacturer's date: 2020\-05\-21
- NHTSA component: STRUCTURE

## NHTSA's summary

This Preliminary information communicates to the dealer that if the service AWD \(All\-Wheel Drive\) or AWD \(All\-Wheel Drive\) Off messages are on and there is a history DTC of C15C9 SYM02 set then no repairs are to be made at this time, a software issue was found and Engineering is working on a permanent solution. If the DTC is setting current then published diagnosis needs to be followed.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2020/MC-10176328-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2020/MC-10176328-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Body and frame

## Trouble codes named

C15C9

## Vehicles listed

- 2020 BUICK ENCORE
- 2021 CHEVROLET TRAILBLAZER

## Other bulletins for the same vehicles and component

- [05\-08\-51\-001L](/bulletins/11015382.md), 2025-03-08, Service bulletin: STRUCTURE:BODY. This informational bulletin provides a procedure on how to remove the paint stain that may present itself under the shipping film.
- [22\-NA\-244](/bulletins/11014238.md), 2025-02-12, Service bulletin: UNKNOWN OR OTHER; STRUCTURE:BODY. This warranty administration service bulletin provides information about GM Accessories \- Dealer\-Installed, Repaired or Replaced During Warranty Coverage Period.
- [10\-08\-110\-001L](/bulletins/11014171.md), 2025-02-11, Service bulletin: STRUCTURE:BODY; VEHICLE SPEED CONTROL. This service bulletin provides information on proper use of floor mats.
- [24\-NA\-239](/bulletins/11013269.md), 2025-01-30, Service bulletin: ELECTRICAL SYSTEM; SEATS; STRUCTURE:BODY; STEERING; ENGINE. This informational bulletin provides a guide on how to diagnose and test for vibrations utilizing the PicoScope.
- [21\-NA\-043](/bulletins/11011709.md), 2024-12-10, Service bulletin: STRUCTURE:BODY; WHEELS; ENGINE; SERVICE BRAKES; UNKNOWN OR OTHER. This bulletin advises the dealers to maintain the vehicle stock on hand by doing a full inspection on the vehicles before being sold \(prepping\) to the customer.
- [22\-NA\-244](/bulletins/11010493.md), 2024-11-13, Service bulletin: UNKNOWN OR OTHER; STRUCTURE:BODY. This warranty administration service bulletin provides information about GM Accessories \- Dealer\-Installed, Repaired or Replaced During Warranty Coverage Period.
- [23\-NA\-219](/bulletins/11009764.md), 2024-11-05, Service bulletin: UNKNOWN OR OTHER; STRUCTURE:BODY. This service bulletin provides information on Concerns or Questions Regarding Installation of Dealer Installed Accessories.
- [22\-NA\-244](/bulletins/11000550.md), 2024-05-30, Warranty extension: ELECTRICAL SYSTEM; EXTERIOR LIGHTING; STRUCTURE:BODY; UNKNOWN OR OTHER; SERVICE BRAKES. This service bulletin provides information about GM Accessories \- Dealer\-Installed, Repaired or Replaced During Warranty Coverage Period.
- [20\-NA\-121](/bulletins/10251350.md), 2024-03-06, Service bulletin: EQUIPMENT; STRUCTURE; ELECTRICAL SYSTEM; SERVICE BRAKES, HYDRAULIC; WHEELS. This service bulletin provides a procedure to locate and fix a possible leak in the roof area due to missing sealant to correct customer concerns of Various Electrical Issues, No Start, Stall, Brake Lamp Not Off, Radio Inoperative, Remote Key Inoperative, Malfunction Indicator Lamp \(MIL\) Illuminated with Possible DTCs.
- [PI0281K](/bulletins/10250244.md), 2024-02-14, Service bulletin: STRUCTURE. This preliminary informational \(PI\) bulletin provides information to dealership personnel which may be helpful when addressing underbody component corrosion with customers.

JSON: [/v1/bulletins/10176328](/v1/bulletins/10176328)

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