For 1990-2009 cars

# THREAD LOCKING TBI SERVICE LOCTITE 262 APPLICATION

#### MODELS AFFECTED: 1980 ELDORADO AND SEVILLE 1981-1984 DEVILLE, BROUGHAM, ELDORADO AND SEVILLE 1983-1984 CIMARRON

There are a variety of procedures involving throttle body servicing where threadlocking materials have been found to be desirable. For these applications, the use of Loctite 262 or equivalent is recommended. Recently, the manufacturers of Loctite have changed the package labeling of their product to Threadlocker 262, which has caused some concern. Although the makeup of the compound has not been changed, the new label description "PERMANENT" and the term "Non-Service Removable" has conveyed the impression that any parts, once coated with the compound, would be joined forever.

For the application involving throttle body screws, the diameter of the screws, the nature of the mating aluminum casting material into which they are driven, and the length of these screw thread engagements, are such that the use of Threadlocker 262 is satisfactory. Although there are situations involving the use of this high strength material that could be considered permanent, throttle body screws (fuel meter cover screws, fuel meter body screws or throttle position sensor screws) which have been coated with the compound can be removed without damage, if necessary.

General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those 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 a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information.