Service bulletin PIT5677A

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)
Type	Service bulletin
NHTSA id	10164784
Published by NHTSA	2019-09-16
Manufacturer's number	PIT5677A
Manufacturer's date	2019-08-26
NHTSA component	ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING

NHTSA's summary

This Preliminary information communicates the following issues and directs dealership to inspect the engine harness for shorting. Some customers may comment on any of the following concerns: - SES MIL - No Start - No Crank - Engine runs rough - Reduced engine power - Erratic speedo - Blown Fuse(s): F46UA, F47UA, F51UA, F78UA, F85UA, F86UA, F87UA, and/or F90UA When checking for DTC's any combination may be found: C15AA P001A P2B00 P2B01 P2B03 P2B96 P001B P003D P0107 P018C P01E5 P01E6 P01E7 P0237 P0340 P0341 P0355 P0365 P037C P03F0 P0521 P0522 P0532 P0616 P077C P07BF P1101 P112F P146D P159F p16A0 p16A2 P2122 P26E5 P2812 P2814 P2B53 P2C05 P2C08 P2C09 P2C0C P2C0D P2C10 P2C12 P2C15 P2C16 P2C19 P305E P3084 P3089 P308E P3093 P3094 P3095 P3098 P30B0 P30B3 P30CF U0073 U0100 U0101 U0140 U0644 U0672

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

Electrical system, Engine

Trouble codes named

C15AA, P001A, P001B, P003D, P0107, P018C, P01E5, P01E6, P01E7, P0237, P0340, P0341, P0355, P0365, P037C, P03F0, P0521, P0522, P0532, P0616, P077C, P07BF, P1101, P112F, P146D, P159F, P2122, P26E5, P2812, P2814, P2B00, P2B01, P2B03, P2B53, P2B96, P2C05, P2C08, P2C09, P2C0C, P2C0D, P2C10, P2C12, P2C15, P2C16, P2C19, P305E, P3084, P3089, P308E, P3093, P3094, P3095, P3098, P30B0, P30B3, P30CF, U0073, U0100, U0101, U0140, U0644, U0672

Vehicles listed
CHEVROLET SILVERADO 1500	2019 (the catalog's model; the bulletin names a series or trim of it)
GMC SIERRA 1500	2019 (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.

Recalls for the same vehicles and component
21V346000	2021-05-13. ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM):SOFTWARE
2019631	2019-12-12. Electrical
19V888000	2019-12-12. ELECTRICAL SYSTEM:12V/24V/48V BATTERY:CABLES
19V328000	2019-04-25. ENGINE

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
N262576260	2026-10-15. Service campaign. General Motors has decided to conduct a Voluntary Emission Recall. Certain vehicles may have a condition that could cause a small exhaust leak at the catalytic converter inlet. Dealers are to replace the catalytic converter inlet clamp and to inspect the catalytic converter – replacing it if damage is observed. The repairs will be made at no charge to the customer.
N262548050	2026-04-24. Service bulletin. This message is to inform dealers that Special Coverage N262548050 is being temporarily suspended for the models above. Involved vehicles will be temporarily removed from IVH. Dealers will be notified when repairs can be resumed. We apologize for any inconvenience this situation may cause.
N262548050	2026-04-23. Service campaign. Certain vehicles, may have a condition that could cause the Catalytic Converter to fail. If this failure occurs, the Malfunction Indicator Light (Check Engine Light) will illuminate, and a diagnostic trouble code will set. Dealers are to replace the Catalytic Converter as necessary. The repairs will be made at no charge to the customer.
N252515590	2026-01-27. Service campaign. Certain vehicles listed above, may have a condition in which the body-to-chassis ground strap may be corroded. Dealers will replace the ground strap.
00-06-01-026R	2025-12-03. Service bulletin. This service bulletin provides information on replacing the intake manifold when the engine is replaced after severe internal engine damage.
23-NA-170	2025-10-25. Service bulletin. This bulletin advises the tech to inspect deeper into what may be to main cause of an engine failure.
23-NA-153	2025-10-25. Service bulletin. The service bulletin advises the tech of a normal transmission shift condition and the delay in throttle response when the throttle plate is opened rapidly and advises the customer that it is normal for the delay.
23-NA-201	2025-10-21. Service bulletin. This service bulletin advises the technician of a possible loose ground that may be causing customer concerns of Loss of Steering Assist and/or Loss of Brake Assist and Malfunction Indicator Lamp (MIL) Illuminated.
24-NA-241	2025-10-16. Service bulletin. This informational bulletin advises the technician of a part number change for long block engines used in the trucks noted.
22-NA-080	2025-10-16. Service bulletin. This technical bulletin provides a procedure to replace the camshaft actuator magnet to correct customer concerns of engine related shudder.