DOOR GLASS AIR LEAKS NEW DOOR GLASS AND RUN CHANNEL
MODELS: 1988 C/K
To reduce door glass water and air leaks on the 1988 C/K model, a new door glass and run channel seal has been developed. The upper rear corner of the new glass is square shaped, while the old style is more rounded (Figure No. 1). When installing a new door glass, a new run channel seal and window retainer ("blow-out-chip") must be installed. A new door glass with the old run channel seal, or vice-versa, will not work.
SERVICE PROCEDURES
Glass and Run Channel Seal Replacement
1. Section lOAl-14 of the l988 C/K Service Manual identifies the procedures for door glass and run channel seal replacement.
Window Retainer ("Blow-Out-Clip") Replacement
1. Remove run channel seal.
2. Using a V8" drill bit, drill the heads of the two rivets.
Notice: Exercise care to remove only the bead of the rivet.
The labor operation and labor time to replace the door glass, run channel seal and window retainer is:
Labor Op: T7580 Labor Time: .9 hrs (one side)
T7585 1.6 hrs (both sides)
NEW PARTS INFORMATION
Description Part Number
L.H. Door Glass Tinted 15612851 L.H. Door Glass Clear 15612849
R.H. Door Glass Tinted 15612852 R.H. Door Glass Clear 15612850
L.H. Run Channel Seal 15612981 R.H. Run Channel Seal 15612982
Retainer ("Blow-Out-Clip") 15612855
Rivets (2 each side) .125 x .063 x .125
The new door glass went into production beginning with the following VIN breakpoints:
GMC JE514159
GMC J1526010
GMC JZ513360
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.
