GM Service Manual Online
For 1990-2009 cars only

TRANSFER CASE SHIFTER ADJUSTMENT

SOME SUBJECT VEHICLES MAY EXPERIENCE 4HI LOCK DISENGAGEMENT BECAUSE OF AN IMPROPERLY ADJUSTED CONTROL ROD. TO CORRECT THIS CONDITION, USE THE ADJUSTMENT PROCEDURE SHOWN IN FIGURE 6. THIS PROCEDURE USES A .200" THICK GAGE TO ENSURE SETTING THE ROD TO THE PROPER LENGTH. A GAGE CAN BE MADE USING SHIM STOCK OF THE SAME THICKNESS. (SEE FIGURE 6).

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.