LONG CRANK TIME (REPLACE MODULAR FUEL SENDER)
SUBJECT: FUEL LINES VISIBLE BELOW VEHICLE (SERVICE PROCEDURE)
VEHICLES AFFECTED: 1991 C MODELS AND 1991-92 "H" MODELS
This bulletin is being revised to correct the VIN numbers for Cadillac in population #3 and remove the 1992 model year from the "C" cars.
CONDITION:
Some owners of 1 991 C and 1991-92 H models may experience a condition where the fuel lines sag below the underbody floor pan creating an unsightly condition.
CAUSE:
Under certain conditions, the forces of snow and water splash exerted on the lines may cause them to sag.
CORRECTION:
Three vehicle populations exist. The service procedure for each is listed below:
Population 1: 1991 Park Avenue/Ultra Start of Production through M1611200 Olds 98 - None Cadillac - None
A cover/retainer may be added by ordering the following:
25559590 Cover/Retainer 9437938 Rivet 11504330 Bolt 11501085 Nut 12345743 Sealant
SERVICE PROCEDURE:
1. Remove the retainer clips as currently installed. 2. Position the cover/retainer on the floor pan as shown in Figure 1. With a scribe or marker, locate position "B" on the floor pan. 3. Remove the required material trim to allow a 5/16th (8mm) hole to be drilled through the floor at position "B". 4. Install P/N 1 1 504330, bolt from inside the vehicle. Coat the underside of the bolt head with sealant, P/N 12345743, or equivalent, to prevent water from getting into the passenger compartment. 5. Coat the bolt where it passes to the underside of the floor pan with sealant. Install hex nut, P/N 11501085, and torque to 10-20 N.m (10 lb. ft.). 6. Snap the cover/retainer over the studs at positions B and C. 7. Install the rivet, P/N 9437938, at position "A" as shown in the illustration.
Population 2: Park Avenue/Ultra - M1611201 through M1667943 Olds 98 - M4300026 through M4320753 Cadillac - M4200023 through
A cover/retainer may be added by ordering cover/retainer, P/N 25559590, and Rivet, P/N 9437938 which can be attached to present studs at position "B" and "C" as shown.
SERVICE PROCEDURE:
1. Remove the retainer clips as currently installed. See Figure 2.
2. Snap the cover/retainer over the studs at position B and C.
3. Install the cover/retainer as shown in Figure 1. Install rivet, Part Number 9437938, at Position "A" as shown in the illustration.
Population 3: 1991 Park Avenue/Ultra - M1667944 through M1708668 1992 LeSabre - NH400021 through NH402434 1991 Olds 98 - M4320754 through M4351349
1992 Olds 88 - NH300014 through NH315320 BC None-Wentzville 1991 Cadillac - M4286087 through M4342355 1992 Pontiac - N1200000 through N1207408
These vehicles were built with a cover/retainer and a plastic push pin at position "A".
SERVICE PROCEDURE:
1. Remove the plastic push pin at position "A". See Figure 2.
2. Install rivet, Part Number 9437938.
Labour Time: Number Time
Level 1 T5299 .7 hr. Level 2 T5300 .3 hr. Level 3 T5301 .2 hr.
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.
