Suburban 3/4 Ton 4WD V8-305 5.0L (1986)
HEADLIGHT SWITCH CAVITY
1.
After removing the headlight switch from the instrument panel, refer to the illustration to locate and identify the cavity code.
2.
If the cavity code is a "D" or an "M" replace the switch using the correct part number in the Parts Information section. If the switch does not
have "D" or "M" codes, reconnect the existing switch.
3.
Install the Campaign Completion label on a clean dry surface of the radiator core support.
Truck & Bus Group
GMC Truck & Coach Operation General Motors Corporaton 31 Judson Street Pontiac, Michigan 48058
Dear GMC Truck Owner:
This notice is sent to you in accordance will the requirements of the National Traffic and Motor Vehicle Safety Act.
General Motors has determined that a defect which relates to motor vehicle safety exists in some 1985 S/T15 and P25-35 model light duty trucks and
1986 C/K, G-Van, Medium Duty and Heavy Duty model trucks.
The push-pull headlight switch might have been manufactured with electrical contacts which allow an intermittent headlight circuit. An intermittent
circuit could cause the headlights to flicker or suddenly go out. Sudden loss of the headlights under severe weather or nighttime driving conditions could
reduce driver visibility which might result in a vehicle crash without prior warning.
Until you have had an opportunity to have your GMC truck corrected, you should be alert for signs of an intermittent headlight circuit. For example, you
might experience flickering headlights or temporary delay when you pull the headlight switch "ON."
To prevent this condition from occurring, please contact your GMC Truck dealer on or after the date shown below to arrange a service date to have your
vehicle inspected. Your dealer will check the headlight switch. If necessary, the switch will be replaced. This service will be completed at no charge to
you.
Instructions have been sent to your GMC Truck dealer. It is estimated that parts will be available to your dealer on May 8, 1986. The labor time
necessary to check the headlight switch and replace it if necessary, is 35 minutes. Please ask your dealer if you wish to know how much additional time
will be needed to process your vehicle.
Your GMC Truck dealer is best equipped to obtain parts and provide service to ensure your vehicle is corrected as promptly as possible. However, if you
take your vehicle to your dealer on the agreed service date and they do not remedy this condition on that date or within five days, we recommend you
contact your nearest GMC Truck Zone Office, either in person or by telephone. The Zone Office will assist you and your dealer in getting your vehicle
corrected. The locations and telephone numbers of the Zone Offices are listed in your Owner's Manual.
After contacting your dealer and the Zone Office, if you are still not satisfied that we have done our best to remedy this condition without charge within a
reasonable time, you may wish to write the Administrator, National Highway Traffic Safety Administration, 400 Seventh Street, S.W., Washington, D.C.
20590, or call 800-424-9393 (Washington, D.C. residents use 426-0123).
The enclosed owner reply card identifies your vehicle. Presentation of this card to your dealer will assist them in making the necessary correction to your
vehicle in the shortest possible time. If you have sold or traded your vehicle, please let us know by completing the postage paid owner reply card and
returning it to us.
We are sorry to cause you this inconvenience; however, we have taken this action in the interest of your safety and continued satisfaction with our
products.
