02-08-42-001H

Bulletin No.: 02-08-42-001H
Date: Apr-2015
Subject:
Headlamp, Tail Lamp, License Lamp or Fog/Driving Lamp Damage
Models:
2016 and Prior GM Passenger Cars and Trucks
Attention:
This Bulletin also applies to any of the above models that may be Export vehicles.
This Bulletin has been revised add the 2016 Model Year and add graphics under Non-Warrantable Conditions. Please
discard Corporate Bulletin Number 02-08-42-001G.
Warranty Submission Guidelines
When submitting a warranty claim for a headlamp, tail lamp, license lamp or fog lamp replacement under warranty, please be aware of the following statement
as printed in the General Motor New Vehicle Warranty.
”Lights, lenses, mirrors, paint, grill, moldings and trim are not covered for cracks, chips, scratches, dents, dings and punctures or tears as a result of impact
with other objects or road hazards."
Non-Warrantable Conditions
This bulletin is being published to assist with the identification of issues that are not considered warrantable.
All Lamp Assemblies
Chemical Damage to exterior polycarbonate headlamp and license lamp lenses. Note that most late model vehicle headlamps and some license lamps have this
type of lens. This material is used because of its temperature and high impact resistance.
A variety of chemicals can cause crazing or cracking of the polycarbonate lens. Headlamp and other exterior lenses are very sensitive. Care should be
exercised to avoid contact with all exterior lenses when treating a vehicle with any type of chemical, such as those recommended for rail dust removal. Also
rubbing compound, grease/tar/oil removers, tire cleaners, prep solvents for pin stripping, cleaner/waxes, undiluted washer solvent, alcohol and even car wash
soaps in too high a concentration may also damage the lens. The use of these products on the lens can result in the need to replace the entire headlamp
assembly.
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The headlamps above show glazing caused by spray-on vehicle cleaner.
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The license lamp above exhibits a separation of the bond of the lens and housing, and a clouding of the polycarbonate lens. This condition was the result
of applying chrome cleaner to the rear bumper and license lamp.
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This lamp shows some effects of chemical damage. Notice the milky color along the edge and the fracture. This was caused by a solvent used to prep the
body for pin striping.
Warning: Use only lukewarm or cold water, a soft cloth and a car washing soap to clean exterior lamps and lenses.
Overheating damage is most often presented as imperfections in the lens surface. Crazing or deformations of the lens may occur if a shop mat or fender cover
is draped over the fender and covers a portion or all of the headlamp assembly while the DRL or headlamps are on. Covering the lamps restricts the amount of
heat dissipated by the headlamps.
Warning: Care should be taken to not cover headlamps with shop mats or fender covers if the vehicle is being serviced while the headlamps or
DRLs are illuminated. Covering an illuminated lamp can cause excessive heat buildup and crazing/deformation of the lens may occur. The
degradation of the lens can be unnoticeable at first and eventually become hairline cracks in the lens. In extreme cases, it could cause the lens to
deform. This damage can also be caused by aftermarket shields that are often tinted in color.
Notice: License lamps and headlamps damaged by chemicals, improper cleaning, or overheating due to being covered are not covered under the new vehicle
warranty.
Impact Damage is most often presented as the assembly is holding moisture, is inoperative, or blemished. Today’s polycarbonate headlamp lenses are very
tough and will withstand normal stone strikes without damage. They are also tough enough to not show witness marks of impacts severe enough to damage the
rear housing. This damage is often revealed through close visual inspection once the lamp is removed. Broken mounting tabs, rear housing fractures, and
loose components inside the lamp assembly are evidence if impact damage. When writing up these concerns never assume it will automatically be a warranty
repair. Inspection of the lamp assembly, once removed from the vehicle, will be required to assess warrantability.
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This housing is cracked across the top of the housing just below the mounting tab. Not shown is the dent at the upper edge of the lens where it impacted an
object.
This housing shows a broken upper mounting tab and a fracture in the rear housing. This lamp had no visible marks on the lens.
This lamp shows paint over spray along the lower edge where it would marry to the front fascia. The lower mounting tabs were also all fractured at the housing
due to impact.
Notice: Headlamps damaged due to impact, or altered to accept an accessory modification, are not covered under the new vehicle warranty.
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This lamp shows impact damage and internal cracking of the lens.
This housing shows a hole which was drilled in the lamp to accept an accessory modification.
Non-GM Headlamp, Tail Lamp and Fog Lamp Assemblies
Many companies outside of General Motors are manufacturing lamp assemblies that look very similar to original equipment. They target high volume programs
like, but not limited to, Impala, Malibu, and Full Size Truck. These lamps are most often presented by customers as holding moisture or for inoperative bulbs due
to corroded electrical connections. It appears these non OE lamps get installed on vehicles as part of a collision repair. Most likely the customer has no idea
they are not original equipment, as the initial appearance is generally good. Obviously, these parts are not covered by warranty. Some of the common company
names seen on these lamps are Eagle Eyes and Depo.
This fog lamp was returned for retaining moisture. As you can see it is marked with the Depo brand (it is also called out on the front lens).
The most reliable way to identify a non OE part is to compare it to the replacement service part or a like vehicle. Many do have the application called out on the
part with the letters GM being present. Notice that they almost never underscore it, as that would be a trademark violation. They often use substandard wiring,
sockets, vent patches and unsealed connectors.
Examples of GM Trademarks
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Note: The graphics below are examples of GM Trademarks that may appear on lamp assemblies. Not all lamp assemblies currently have the
trademark, however future assemblies will contain the trademark on a label affixed to the assembly.
2014 Cadillac XTS
2014 Chevrolet Silverado
Heat Damaged Fog and Head Lamp Assemblies Caused By High Output Bulbs
Another trend being seen is the installation of bulbs that have a higher output than the original equipment. Because the bulb output is higher, the operating
temperature is also higher. This excessive heat can melt the socket, housing, or lens. Because these bulbs burn hotter and brighter, they also have a reduced
service life. These bulbs are different in appearance than the original equipment. Some have blue tint on the bulb and others are clear. If in doubt, the bulb
number should match the GM service part.
Notice: When servicing any exterior lighting assembly, be sure to transfer any electrical connection seals to the new part. They are often on the body side of
the harness connection, but may have stayed on the part being replaced. If not transferred to the new part, the connection may corrode due to water entry.
Notice: Headlamps or fog lamps damaged by the use of high output bulbs are not covered under the new vehicle warranty.
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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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