Service bulletin 17456
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 | 10137162 |
| Published by NHTSA | 2018-05-21 |
| Manufacturer's number | 17456 |
| Manufacturer's date | 2018-01-29 |
| NHTSA component | WHEELS:HUB |
NHTSA's summary
17456 - Customer Satisfaction Program. Certain vehicles may have a condition in which the rear wheel hub nut could become loose due to the rear wheel hub nut retainer not being formed properly. If the hub nut loosens, the StabiliTrak message may be displayed in the driver information center (DIC) and the traction control indicator may illuminate, axle fluid may leak from the axle seal area, and rear axle housing damage could occur. Replace the hub nut retainer. Inspect the axle tube threads for damage and repair if necessary.
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
Wheels, Wheel bearing
| CHEVROLET SILVERADO | 2017 |
|---|---|
| CHEVROLET SILVERADO 2500 | 2018 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET SUBURBAN | 2017 |
| GMC SIERRA | 2017 |
| GMC SIERRA DENALI | 2018 (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.
| PIP5248C | 2017-08-15. Service bulletin. This Preliminary Information communication provides information to the technician on the steps need to diagnose and repair vehicles that may have stalling shudder and/or hard shifting into 1st gear or reverse vibration on launch (with excessive crankshaft end play). Technician will test to determine if the crank shaft end play is within specification 0.0015–0.0086 inch. If end play is found to be out of specification, remove engine and inspect for possible crankshaft thrust bearing and/or crankshaft for wear. Inspect thrust bearing for wear on one side and crankshaft on that “mating” surface. If the thrust bearing has three vertical channels worn off replace connecting rod bearings, main bearings, thrust bearing and crankshaft. If working on a Corvette the oil tank with lines and oil cooler are both required to be replaced if equipped. |
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