A/T - Fluid Leaks At Hose Clamps on Cooler Line

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Bulletin No.: T-92-29
File in Group: 7
Number: 235
Corp. Ref. No.: 107104
Date: Jan. 1992


SUBJECT: TRANSAXLE COOLER LINE FLUID LEAKS AT HOSE CLAMPS

MODELS AFFECTED: 1991 DE VILLES AND FLEETWOODS

Figure 1:

Figure 2:

Some owners of 1991 DeVilles and Fleetwoods may comment of a transaxle fluid leak at any of the cooler hose to pipe connections (see Figures 1 and 2) which may be caused by a lack of interference fit between the hose and pipe. To correct this condition it will be necessary to install a second clamp at the connections shown in Figure 1 and replace the hoses shown in Figure 2.

To repair this condition use the following procedure:

1. Raise vehicle to access hose to pipe worm gear clamps at positions shown in Figure 1.


2. Loosen both clamps.

Figure 3:

3. Push hoses over stop (second) beads approximately 5 mm. Refer to Figure 3.


4. Slide the clamp over the stop bead and torque to 1.8 N-m + /- .4 N-m (16 lbs.in. + /- 3.5 lbs.in.).

5. Install a second worm gear clamp, P/N 22527587 or equivalent, over the initial (first) bead and torque as in step 4.

6. Remove right side headlamp module.

7. Loosen four clamps (see Figure 2) and remove and discard cooler pipe to auxiliary cooler hoses.

8. Install new hoses, P/N 25608924 (upper), 25608925 (lower) and torque clamps to 1.8 N-m + /- .4 N-m (16 lbs.in. + /- 3.5 lbs.in.).

9. Reinstall right side headlamp module.

10. Check transaxle fluid level and add as needed.

Parts are currently available from GMSPO.

For warranty purposes use Labor Operation T5223 at .8 hour.