Workshop Repair and Service Manuals GMC SIERRA
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02-08-42-001F Headlamp Tail Lamp License Lamp or Fog Driving Lamp Damage - (Feb 10 2012) Lighting Exterior Lighting License Lamps - part 2

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This damage can also be caused by aftermarket shields thatare often tinted in color.

Notice:License lamps and headlamps damaged by chemicals, improper cleaning, or overheatingdue 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 acrylic headlamp lenses are very tough and will withstand normal stone strikeswithout damage. They are also tough enough to not show witness marks of impacts severeenough to damage the rear housing. This damage is often revealed through close visualinspection once the lamp is removed. Broken mountingtabs, rear housing fractures, and loose components inside the lamp assembly are evidenceif impact damage. When writing up these concerns never assume it will automaticallybe a warranty repair. Inspection of the lamp assembly, once removed from the vehicle,will be required to assess warrantability.

#02-08-42-001F: Headlamp, Tail Lamp, License Lamp or Fog/Driving Lamp Damage - (Feb 10, 2012) Lighting Exterior Lighting License Lamps

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.

#02-08-42-001F: Headlamp, Tail Lamp, License Lamp or Fog/Driving Lamp Damage - (Feb 10, 2012) Lighting Exterior Lighting License Lamps

This housing shows a broken upper mounting tab and a fracture in the rear housing.This lamp had no visible marks on the lens.

#02-08-42-001F: Headlamp, Tail Lamp, License Lamp or Fog/Driving Lamp Damage - (Feb 10, 2012) Lighting Exterior Lighting License Lamps

This lamp shows paint over spray along the lower edge where it would marry to thefront fascia. The lower mounting tabs were also all fractured at the housing due toimpact.

Notice:Headlamps damaged due to impact are not covered under the new vehicle warranty.

Non-GM Headlamp, Tail Lamp and Fog Lamp Assemblies

Many companies outside of General Motors are manufacturing lamp assemblies that lookvery similar to original equipment. They target high volume programs like, but notlimited to, Impala, Malibu, and Full Size Truck. These lamps are most often presentedby customers as holding moisture or for inoperative bulbs due to corroded electricalconnections. It appears these non OE lamps get installed on vehicles as part of acollision repair.Most likely the customer has no idea they are not original equipment, as the initialappearance 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.

#02-08-42-001F: Headlamp, Tail Lamp, License Lamp or Fog/Driving Lamp Damage - (Feb 10, 2012) Lighting Exterior Lighting License Lamps

This fog lamp was returned for retaining moisture. As you can see it is marked withthe 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 replacementservice part or a like vehicle. Many do have the application called out on the partwith the letters GM being present. Notice that they almost never underscore it, asthat would be a trademark violation. They often use substandard wiring, sockets, ventpatches and unsealed connectors.

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 thanthe original equipment. Because the bulb output is higher, the operating temperatureis also higher. This excessive heat can melt the socket, housing, or lens.

Retained Accessory Power Description and Operation Accessory Outlets     Retained Accessory Power (RAP) The retained accessory power (RAP) system allows specificvehicle functions to operate for a specific amount of time afterthe ignition switch is turned OFF. The BCM monitors the ignitionswitch...
Headlamp Replacement (GMC) Lighting Exterior Lighting Head Lamp     Headlamp Replacement Callout Component Name Preliminary ProceduresRemove the radiator grille. Refer toFront Grille Replacement.Loosen only, do not remove, the lower outside hidden headlampbolt-(2).Depress the housing...
04-08-48-001D Rear Window Defogger - Broken Heating Grid Detection Method - (Apr 17 2012) Defoggers Rear Glass     Subject: Rear Window Defogger – Broken Heating Grid Detection Method Models:  2013 and Prior GM Passenger Cars and Light Duty Trucks     This bulletin is being revised to add the 2013 model year and change...
Replacement Bulbs Lighting Bulbs     Exterior Lamp Bulb Number Back-up Lamp 3047K Back-up Lamp* 1156 Cargo Lamp and Center High-Mounted Stoplamp (CHMSL) 912LL Fender Marker Lamp (If Equipped) W5WLL Front Turn Signal Lamp...
Interior Lighting Systems Description and Operation Lighting Interior Lighting     Interior Lamps The interior lighting consists of 2 groups. The first groupincludes lamps that may not be dimmed. Courtesy/illuminated entry lampsDome lampsMap lampsReading lampsVanity mirror lampsCourtesy/Illuminated Entry...
High Mount Stop Lamp Replacement (Regular Cab) Lighting Exterior Lighting Tail Lamp     High Mount Stop Lamp Replacement Callout Component Name 1 High Mounted Stop and Cargo Lamp Opening Cover Screw(Qty:-2) Caution:Refer toFastener Caution. Tighten 2.5-Y(22-lb-in) 2 High Mounted Stop and...