DeVille Concours V8-4.6L VIN Y (1995)
Fuel Tank Unit: Customer Interest
Engine - Cranks But Will Not Start
FILE IN SECTION: 6E - Engine Fuel & Emission
BULLETIN NO.: 53-63-02
DATE: June, 1995
SUBJECT:Engine Cranks But Will Not Start - No Fuel Pressure (Replace Module Fuel Level Sender and Jumper Harness)
MODELS: 1994-95 Cadillac Concours, DeVille, Eldorado, Seville
with 4.6L, 4.9L Engine (VINs 9, Y, B - RPOs L37, LD8, L26)
VIN BREAKPOINTS:
Models
1994 - Built After
1995 - Built Prior To
Concours
RU286112
SU261519
DeVille
RU286106
SU261512
Eldorado
RU619245
SU612148
Seville
RU836054
SU818790
CONDITION
Some owners may comment that engine will crank but won't start - no fuel pressure.
CAUSE
A bent or damaged terminal in cavity "C" of the jumper harness from the main body harness to the modular fuel sender could produce a high resistance
circuit. This may lead to an intermittent open in the modular fuel sender ground circuit.
CORRECTION
Perform visual inspection of the sender cover to verify that no damage has occurred to the cover. When the above symptom is present, verify the
condition by checking the fuel system pressure loss. Refer to diagnostics in Section 6C of the appropriate Service Manual.
If diagnosis indicates fuel pressure loss, a possible cause is damage to the modular fuel level sender wiring or damage to the jumper harness terminal. If
the sender pass-through connector shows signs of damage, replace the jumper harness as well as the modular fuel sender.
PARTS INFORMATION
Part Number
Description
25029982
Modular Fuel Level Sender
12107779
Jumper Harness
Parts are currently available from GMSPO.
WARRANTY INFORMATION:
For vehicles repaired under warranty, use:
Labor
Operation
Labor Time
L1200
Use published labor operation time.