# Service bulletin PIT4745D

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: 10157021
- Published by NHTSA: 2019\-04\-08
- Manufacturer's number: PIT4745D
- Manufacturer's date: 2017\-09\-20
- NHTSA component: STRUCTURE:FRAME AND MEMBERS; STRUCTURE:BODY; WHEELS

## NHTSA's summary

This Preliminary Information communication provides information to the technician about vehicles that have raised dents or ripple appearance in the side outer panel of the cargo box around the perimeter of the wheel house opening. Technician should first access the rear of the inner wheelhouse area through the tail lamp cavity and the front of the wheelhouse from under the vehicle, and coat the inner hem of the wheel house to side outer panel with 3M Rust Fighter I. After allowing the 3M Rust Fighter I to dry then apply several coats of Nox Rust X\-121B undercoating.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2017/MC-10157021-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2017/MC-10157021-9999.pdf)

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

## Components

Body and frame, Wheels

## Vehicles listed

- 2017 CHEVROLET SILVERADO
- 2007 to 2011 CHEVROLET SILVERADO 1500
- 2014 CHEVROLET SILVERADO 1500
- 2012 CHEVROLET SILVERADO 2500
- 2015 to 2016 CHEVROLET SILVERADO 2500
- 2018 CHEVROLET SILVERADO 2500
- 2013 CHEVROLET SILVERADO 3500
- 2017 GMC SIERRA
- 2007 to 2010 GMC SIERRA 1500
- 2014 to 2016 GMC SIERRA 1500
- 2012 GMC SIERRA 2500
- 2011 GMC SIERRA 3500
- 2013 GMC SIERRA 3500
- 2018 GMC SIERRA 3500

## Other bulletins for the same vehicles and component

- [25\-NA\-156](/bulletins/11026104.md), 2025-12-04, Service bulletin: WHEELS. This service bulletin provides information on Tire Sidewall Irregularities.
- [25\-NA\-114](/bulletins/11022868.md), 2025-09-06, Service bulletin: STRUCTURE:BODY. This informational bulletin provides information on Anti\-Chip Coating Appearance.
- [08\-03\-10\-006I](/bulletins/11017016.md), 2025-04-15, Service bulletin: WHEELS. This service bulletin provides a procedure on how to clean and resurface aluminum wheel bead seats for vehicles that have the condition of Tire Slowly Goes Flat, Tire Air Loss, Low Tire Pressure Warning Light Illuminated, Aluminum Wheel Bead Seat Corrosion.
- [19\-NA\-255](/bulletins/11016944.md), 2025-04-10, Service bulletin: STRUCTURE:BODY. This service bulletin provides frame coating repair information to correct a customer concern of wax coating on frame peeling, metal shows corrosion/rusting \(U.S. and Canada Only\).
- [05\-03\-07\-009L](/bulletins/11015409.md), 2025-03-08, Service bulletin: SUSPENSION; WHEELS. This service bulletin provides information on Wheel Alignment Specifications, Requirements and Recommendations for GM Vehicles.
- [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.
- [21\-NA\-043](/bulletins/11014230.md), 2025-02-12, Service bulletin: VISIBILITY/WIPER; SERVICE BRAKES; ENGINE; ELECTRICAL SYSTEM; WHEELS. 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.
- [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.
- [17\-NA\-350](/bulletins/11013352.md), 2025-02-01, Service bulletin: STRUCTURE:BODY. This informational bulletin provides explanation of a normal condition of a loose fitting trailer hitch receiver in the gooseneck hitch ball.

JSON: [/v1/bulletins/10157021](/v1/bulletins/10157021)

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