Seville V8-300 4.9L (1991)
Starter Motor: All Technical Service Bulletins
Engine Controls - SES Lignt On/Gear Select Problem/DTC's
Bulletin No.:
T-93-26
File in Group:
6E
Number:
104
Corp.Ref.No.:
116002R
Date:
Jan. 1993
SUBJECT:
"SERVICE VEHICLE SOON" LIGHT OR MESSAGE OR "GEAR SELECT PROBLEM" MESSAGE, CODE E91/E091
MODELS AFFECTED:
1991-1992 DE VILLES, FLEETWOODS, ELDORADOS, AND SEVILLES
This bulletin supersedes bulletin T-92-56A which should be discarded. Ground repair procedures and the warranty statement have been revised.
Some vehicles may experience a "Service Vehicle Soon" light or a "Gear Select Problem" message (Eldorado/Seville) with a code E91 or E091. This
code may result in inoperative cruise control. The vehicle continues to start only in park or neutral.
These conditions may be caused by a Neutral Start Back Up (NSBU) switch (or a loose or corroded engine or chassis ground). To repair this condition
use the following procedure:
1.
Enter ECM diagnostics and record the code E91 snapshot data. Pay particular attention to parameter L.0.7 on DeVilles and Fleetwoods and ED10
on Eldorados and Sevilles. If the code data indicates battery voltage below 13.0 with the engine running, proceed to step 2. If the voltage is 13.0 or
above, proceed to step 3.
2.
1991 Eldorados and Sevilles - Remove and clean ground G103 located by the starter (refer to page 8A-201-1, Figure C, in the Service Information
Manual for location):
a.
Remove the two starter bracket nuts, cable, starter bracket mounting stud, and starter bracket.
b.
Discard the starter bracket mounting stud and the starter bracket.
c.
Clean both the eyelet and the engine block in the area where the starter bracket was located with a wire brush.
d.
Install a new starter bracket, P/N 3538914, with the eyelet between the block and the bracket. Bend the starter bracket as necessary to provide
clearance between the block and the bracket for the eyelet.
e.
Install a new starter bracket mounting stud, P/N 353 7885, to the block. Torque to 38 N-m (27 lbs.ft.).
f.
Install the nut that secures the starter bracket to the starter. Torque to 3.0 N-m (27 lbs.in.).
^
Continue to step 3.
1992 Eldorados and Sevilles - Remove and clean ground G301 on the right-hand kick panel (refer to page 8A-201-23, Figure A, in the Service
Information Manual for location):
a.
Remove cables and nut(s) from sheet metal ground stud.
b.
Clean stud and eyelets with a wire brush to remove paint, corrosion, or rust.
c.
Install cable eyelet(s), largest to smallest, with the largest eyelet against the fender.
d.
Install one nut and torque to 9 N-m (6.6 lbs.ft.).
^
Continue to step 3.
