Calais L4-151 2.5L VIN U TBI (1989)
Starting with vehicle number LM778565, vehicles are equipped with a new high expansion pressure hose, which corrects this condition:
In vehicles built before this VIN breakpoint, this condition may be repaired by installing a new high expansion pressure hose, P/N 26026183.
1990-91 W/2.5L (VIN U) ENGINE
Starting with vehicle number MM016754, 1991 vehicles are being built with a new "tuned" return hose which corrects this condition.
In vehicles built before this VIN breakpoint, this condition may be repaired by installing a new "tuned" return hose, P/N 26027298.
Vehicles with tuned return hoses that still exhibit steering shudder, install a high expansion pressure hose, P/N 26027234.
Note:
If the above hoses do not repair the shudder condition, please contact Technical Assistance.
Parts are currently available from GMSPO.
ENGINE VIN
MODEL YEAR/
CARLINE
ENGINE
CODE
MODEL YEAR
HOSE TYPE
P/N
VIN BREAKPOINT
NOTE
N
2.3L LD2/LG0
D or A
1990
TUNED RETURN
26023904
1990 - LM717359
2
N
2.3L LD2/LG0
D or A
1990
HIGH EXPANSION 26024244
1990 - LM744715
1,2
N
3.3L LG7
N
1989-1990
HIGH EXPANSION 26026183
1990 - LM778565
2
N
2.5L L68
U
1989-1991
TUNED RETURN
26027298
1991 - MM016754
2
N
2.5L L68
U
1989-1991
HIGH EXPANSION 26027234
SERVICE ONLY
3
NOTE:
1 USE RETURN HOSE P/N 26023904 BEFORE INSTALLING THIS NEW PRESSURE HOSE. REMOVE P/S PUMP HOSE CLIP.
2 VEHICLES BUILT AFTER THIS BREAKPOINT ALREADY CONTAIN THIS HOSE.
3 USE RETURN HOSE P/N 26027298 BEFORE INSTALLING THIS NEW PRESSURE HOSE.
IF THE HOSES LISTED ABOVE DO NOT WORK, PLEASE CONTACT TECHNICAL ASSISTANCE.