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Service bulletin PIT5662F

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10201321
Published by NHTSA2021-09-13
Manufacturer's numberPIT5662F
Manufacturer's date2021-08-19
NHTSA componentELECTRICAL SYSTEM:ADAS:PARKING ASSIST:WARNING; PARKING BRAKE

NHTSA's summary

This Preliminary information communicates information to diagnose DTC C056D or C056E.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Brakes, Driver assistance, Electrical system, Parking brake

Trouble codes named

C056D, C056E

Vehicles listed
BUICK ENCLAVE2018, 2019, 2020, 2021, 2022
CADILLAC XT52017, 2018, 2019, 2020, 2021, 2022
CADILLAC XT62020, 2021, 2022
CHEVROLET BLAZER2019, 2020, 2021, 2022
CHEVROLET SILVERADO 15002019, 2020, 2021, 2022 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO 25002020, 2021, 2022 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO 35002020, 2021, 2022 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET TRAVERSE2018, 2019, 2020, 2021, 2022
GMC ACADIA2017, 2018, 2019, 2020, 2021, 2022
GMC SIERRA 15002019, 2020, 2021, 2022 (the catalog's model; the bulletin names a series or trim of it)
GMC SIERRA 25002019, 2020, 2021, 2022 (the catalog's model; the bulletin names a series or trim of it)
GMC SIERRA 35002019, 2020, 2021, 2022 (the catalog's model; the bulletin names a series or trim of it)

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
PIP5865B2024-04-15. Service bulletin. This Preliminary information communicates the possibility of DTC P30BF failing on low mile vehicles due to the possibility of the cylinder 1/2 sliding barrel binding on intake camshaft.
PIT5843B2023-06-13. Service bulletin. This Preliminary information communicates that a vehicle may come to the dealer with concerns of various warning messages, possibly the door locks cycling, passive entry inoperative or other concerns. The technician is instructed to inspect G401 for loose or missing terminals and to inspect G405.
PIT5873G2023-03-13. Service bulletin. This Preliminary information communicates an issue when remote start is used the engine may stall when the push to start button is pressed. On certain models, dealerships are to reprogram the BCM to correct the issue. The remaining models engineering is working on a fix.
PIT5873F2023-03-13. Service bulletin. This Preliminary information communicates an issue when remote start is used the engine may stall when the push to start button is pressed. On certain models, dealerships are to reprogram the BCM to correct the issue. The remaining models engineering is working on a fix.
PIT5873E2023-03-13. Service bulletin. This Preliminary information communicates an issue when remote start is used the engine may stall when the push to start button is pressed. Engineering is working on a fix.
PIT5662G2022-04-18. Service bulletin. This Preliminary information communicates information to diagnose DTC C056D or C056E.
22-NA-0512022-03-30. Service bulletin. This informational bulletin provides information for dealers/technicians on Changes to Park Assist and Reverse Automatic Braking for Certain 2022 Passenger Car, Crossover, SUV, and Truck Models Equipped with RPO 00Y and/or 00Z.
20-NA-2072022-03-16. Service bulletin. This service bulletin informs the technician to inspect for a possible electrical concern at the ECM X2 electrical connector to correct a customer concern of Malfunction Indicator Lamp (MIL) Illuminated - DTC P0333 Set.
21NA2522021-12-27. Service bulletin. This technical bulletin provides repair information to correct a customer concern of Electronic Park Brake Applying Intermittently After Vehicle Shutdown without DTC?s.
PIT5849D2021-12-13. Service bulletin. This Preliminary information communicates an issue with the rear tail / parking lights staying on and do not time out after exiting the vehicle and passive locking the vehicle. This condition can lead to a dead battery. GM Engineering has released a fix and dealers are to reprogram the BCM per Customer Satisfaction Program N212344990.