Bulletin No.: PI0564I
Date: Jul-2017

Subject:

Wax Coating on Frame Peeling, Metal Shows Corrosion/Rusting (U.S. and Canada Only)

Models:

2011-2017 Cadillac Escalade Models
2011-2013 Chevrolet Avalanche
2011-2017 Chevrolet Express, Silverado, Suburban, Tahoe
2011-2017 GMC Savana, Sierra Models, Yukon Models

This PI has been revised to add the 2017 Model Year. Please discard PI0564H.

Condition/Concern
Some customers may comment that areas of the frame wax coating are peeling off and rust/corrosion is visible on the metal in these areas. Several
examples of this condition are shown in each group of graphics below.

Truck Example Photos

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Van Example Photos

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Recommendation/Instructions
A combination of specialized metal coating products manufactured by Lloyds and Daubert have been found to be the most suitable products to
provide corrosion control and protection to address this type of repair. Our recommendation is to prep the metal surface using *Lloyd’s Pure Prep™
Metal Surface Preparation P/N 25418, then topcoat with both *Lloyds Kryptonite Metal Treatment P/N 36502 Life Long Rust Protection and *Daubert
Non-Rust® P/N X-121B One Coat Rust Preventative Coating. It is strongly recommended they be applied according to the manufacturer’s
procedures.
*We believe this source and their products to be reliable. There may be additional manufacturers of such products/materials. General Motors does
not endorse, indicate any preference for, or assume any responsibility for the products or material from this firm or for any such items that may be
available from other sources.
Important: To ensure proper coating performance, all of the manufacturer’s “Applications Guidelines” MUST be followed.
Prep the frame and apply the Lloyds and Daubert coatings following the steps below:

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Important: The pictures below show the bed and/or cab removed from the vehicle. These pictures are provided for reference only. Bed and/or Cab
removal are not necessary. Dealers should only repair the locations that show the condition. The following procedure should be utilized to return the
truck to a factory look.
1.

Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle in SI.

2.

If labels are in the area to be reworked, remove any of the visible white labels on the frame (usually one per side).

3.

Remove any components as required to gain access to the corroded component or area.
Important: Any corrosion damage noted to the extent of weakening the component will require component replacement.

4.

Determine a start and finish point on each side for the section/area of the frame to be repaired.

5.

Using a rag and wax/grease removing solvent, remove the wax coating and any grease, oil, or undercoating from the truck frame in the
affected repair area. The graphic above shows an example of a small portion of the wax coating removed.

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Important: Lloyds Kryptonite is designed to apply directly onto brown rust or clean surfaces; however any loose flakes/scale of rust need to
be removed prior to application.
6.

Any loose rust or loose flakes should be scraped, wire brushed or ground off.

7.

Remove any residual wax, oil or rust by wiping the frame down with a towel or Scotch-Brite™ (3M) pad soaked with wax/grease remover.

8.

Using Lloyd’s Pure Prep™ Metal Surface Preparation P/N 25418 (10 fluid ounce bottle), or equivalent, saturate a towel or Scotch-Brite™
(3M) pad with the pre-diluted solution and scrub the area well, rendering a foaming of the Pure Prep.™ This will greatly improve adhesion and
corrosion resistance in the repair areas.

Important: The frame must be dry and free of wax/oily substances prior to application of the new coating.
9.

Using a water dampened clean towel, remove any residue and dry the affected area. Dry the repair area completely using an air hose to blow
dry the frame.

10. Check the repair area for phosphate treatment by wiping it to see if any corrosion residue can be picked up. Correctly treated areas will not
have any residue on the surface.

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11. Apply a light flash-coat of Lloyds Kryptonite Metal Treatment P/N 36502 Life Long Rust Protection (14 ounce aerosol), or equivalent, to all
rusted and bare areas of the frame where the wax coating was removed. This first coat should flash in approximately 3-5 minutes.

12. Apply a second coat of Lloyds Kryptonite. This can be a heavy coat; double and triple passes with this product, over a light first coat, are not
a problem.
Note: Dried Lloyds Kryptonite will perform beautifully over time and actually get harder and more durable as it experiences heat.

13. We suggest top coating the Lloyds Kryptonite with Daubert Nox-Rust® P/N X-121B “One Coat Rust Preventative Coating” (aerosol), or
equivalent.
Note: As shown in the graphic below, besides adding a corrosion resistant layer, it dries to firm, wax-like film which will more closely
resemble the appearance of the unrepaired areas of the frame.

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14. Lower the vehicle and allow the final coat to dry as recommended by the manufacturer.

Parts Information
Dealers should obtain 25418 and 36502 by contacting Lloyds by e-mail at [email protected], or by calling 1-800-361-6766.
U.S. Dealers can obtain the X-121B topcoat by contacting the Daubert website at www.daubertchemical.com or inside the U.S. only, by calling 1800-914-0034.
Canadian dealers must contact the Daubert distributor in Canada, Corrosion Control Coatings Ltd, by faxing the form below to 1-800-563-8078.
Important: ONLY Canadian Dealers should use this form.

Warranty Information
For vehicles repaired under warranty, use Labor Operation below and include material cost.
Labor Operation

Description

Labor Time

1480098*

Remove Frame Wax, Apply Metal Coating

Up to 7.0 hrs

*This is a unique Labor Operation for Bulletin use only.

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GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these technicians of conditions
that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the
equipment, tools, safety instructions, and know-how to do a job properly and safely. If a condition is described, DO NOT assume that the bulletin
applies to your vehicle, or that your vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the
information.

WE SUPPORT VOLUNTARY TECHNICIAN CERTIFICATION
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