Service bulletin PIP5228

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	10135313
Published by NHTSA	2018-05-07
Manufacturer's number	PIP5228
Manufacturer's date	2014-10-06
NHTSA component	ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE

NHTSA's summary

This Preliminary Information communication provides information to the technician about vehicles that have a vibration that is felt between 1200 ? 1400 engine revolutions per minute when in active fuel management V4 mode. Technician will need to use J?38792-A Electronic Vibration Analyzer 2 or CH?51450-NVH Pico Oscilloscope Diagnostic Kit to measure the frequency of the vibration. Technician will need to remove and replace the exhaust muffler clamp that joins the three-way catalytic converter assembly to the pipe of the muffler assembly.

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

Engine, Exhaust and emissions, Exhaust manifold, pipes and muffler

Vehicles listed
CHEVROLET SILVERADO 1500	2014 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO 2500	2014, 2015 (the catalog's model; the bulletin names a series or trim of it)
GMC SIERRA 1500	2014 (the catalog's model; the bulletin names a series or trim of it)
GMC SIERRA 2500	2014, 2015 (the catalog's model; the bulletin names a series or trim of it)
GMC SIERRA DENALI	2015 (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
16NA380	2020-11-30. Service bulletin. This informational bulletin provides a procedure on how to perform a quick test to check if the DPF is the cause of excessive soot from the tailpipe.
16NA380	2020-08-10. Service bulletin. This informational bulletin provides a procedure on how to perform a quick test to check if the DPF is the cause of excessive soot from the tailpipe.
16NA380	2019-09-23. Service bulletin. This informational bulletin provides a procedure on how to perform a quick test to check if the DPF is the cause of excessive soot from the tailpipe.
16NA380	2019-07-01. Service bulletin. This informational bulletin provides a procedure on how to perform a quick test to check if the DPF is the cause of excessive soot from the tailpipe.
18236	2018-11-13. Service bulletin. 18236 - Special Coverage - On some vehicles, equipped with the LML (DURAMAX 6.6L V8 TURBO Diesel) engine, the exhaust turbocharger outlet pipe may have a bad weld. Smoke may be noticed from under the hood at a stop or while driving. The customer may also smell exhaust gas. Dealers are to replace the exhaust turbocharger outlet pipe. The repairs will be made at no charge to the customer.
PI1275	2018-06-11. Service bulletin. This preliminary information bulletin provides a procedure to install an air temperature sensor package kit, to correct the customer concern for reduced engine power and /or MIL illuminated.
16-NA-380	2018-05-21. Service bulletin. This Technical bulletin provides a procedure on how to perform a quick test to check if the DPF is the cause of excessive soot from the tailpipe.
PIP5335A	2018-05-21. Service bulletin. This Preliminary Information communication provides information to the technician about vehicles that have a Service Engine Soon Malfunction Indicator Lamp on. Technician will find Diagnostic Trouble Codes P0340 and P0341 setting at times. Technician should use normal published Service Information diagnostics. If normal Service Information diagnostics does not isolate the concern, inspect for corrosion in connector X154 located on the front cover next to the vacuum pump.
PI0235K	2018-05-21. Service bulletin. This preliminary informational bulletin provides repair information to correct customer concerns of an exhaust leak or vibration/rattle noise at approximately 900 RPM, fuel smell/white smoke noted intermittently (usually after coming to a stop), and/or an oily substance noted on exhaust downpipe.
PIP4112S	2018-05-21. Service bulletin. This Preliminary Information communication provides information to the technician of a complaint of a sag or hesitation when accelerating. The concern is present when coasting at low speeds of less than 15 miles per hour and then aggressively applying the throttle, or after making a hard stop followed by an aggressive throttle. This concern may also be present while crusing at highway speeds and then an aggressive increase in throttle.This is considered normal operation of the vehicle the throttle is delayed and opened slowly up to .7 seconds to help minimize driveline lash and clunking or will have approximately .5 seconds of zero torque to allow the transmission to shift to downshift.