NHTSA ID Number: 10171850
Manufacturer Communication Number: SS1034558
TSB/Document Date: 2020-02-29
Summary
Service Solution for OBD16 M2, C2, 108SD & 114SD Allison transmission not shifting due to harness chafing.
SS 1034558 OBD16 M2,108SD & 114SD
Allison transmission not shifting due to
harness chafing
Applicable Vehicles:
M2, 108SD and 114SD OBD 2016 vehicles with Allison 1K, 2K, 3K and
4K transmission.
Symptoms
Symptoms reported include, truck will not go into gear or is stuck in gear. In addition to the symptoms, there
are transmission fault codes that are generated.
Issue:
Chaffing can occur on several areas of the transmission wiring as noted in the first picture 1 below. The
example picture is of an Allison 3K transmission, but similar chaffing can occur on the 1K, 2K and 4K
transmissions. Over time the chaffing can lead to wires coming in contact with each mounting point and or
wires coming in contact with each other.
Solution:
To reduce the risk of chafing , fastening location on the transmission were update at both Mount Holy and
Santiago truck plants on 9/26/2019. The updates for each of the vehicle / transmission types is listed below
and labeled. If chafing is found at or around any of the mounting points on the transmission, it would be
recommended to update the harness routing per the vehicle / transmission types listed below.
Picture 1
1
SS 1034558 OBD16 M2,108SD & 114SD Allison transmission not shifting due to harness chafing
----------------------------------------------------------------------------------------------------------------------------------------------------------------------
Harness Routing 1
Vehicle Type: 106, 108SD
Transmission Type: 1K, 2K
Engine Type: DD5, DD8
1. A) RH Single Fuel Tank configurations: Mount 23-09130-017, 23-13974-020 and 23-13482-004 to
move harness away from transmission housing.
2
SS 1034558 OBD16 M2,108SD & 114SD Allison transmission not shifting due to harness chafing
1. B) LH Single Fuel Tank configurations: Mount 23-09130-021, 23-13974-020 and 23-13482-003 to move
harness away from transmission housing.
3
SS 1034558 OBD16 M2,108SD & 114SD Allison transmission not shifting due to harness chafing
1. C) Dual Fuel Tanks configurations: Mount Fir tree 23-13482-003 below the fuel line bracket (The one
used to mount the "Tee Valves").
4
SS 1034558 OBD16 M2,108SD & 114SD Allison transmission not shifting due to harness chafing
2. Any fuel tanks configuration: Use 06-09782-000 instead of 23-09130-033 when installing fuel lines. Use
the bottom hole with 23-13482-003 to clip the transmission
harness.
5
SS 1034558 OBD16 M2,108SD & 114SD Allison transmission not shifting due to harness chafing
3. Any fuel tanks configurations: Use bracket 23-13863-000 together with Fir Tree 23-13482-004 near the
Turbine Speed Sensor to move trans harness away from any
rubbing component.
6
SS 1034558 OBD16 M2,108SD & 114SD Allison transmission not shifting due to harness chafing
Parts List for Harness routing 1
Allison 1K , 2K
Chassis 106, 108SD Engine DD5, DD8
Part Number
Part Description
QTY
23-09130-017
BRKT1
STANDOFF,.344X.344,ANGLE
23-13974-020
SCREW-TAPPING,HEX
FLG,M8X20
1
23-13482-004
TIE-FIR TREE
MT,8.8-9.3MM,SHRT
1
23-09130-021
BRKT1
STANDOFF,.531X.281,OFFSET
1A R/H Single Fuel Tank
1B LH Single Fuel Tank
7
SS 1034558 OBD16 M2,108SD & 114SD Allison transmission not shifting due to harness chafing
23-13974-020
SCREW-TAPPING,HEX
FLG,M8X20
1
23-13482-003
TIE-FIR TREE
MTD,7.8-8.0MM,FT8
1
23-13482-003
TIE-FIR TREE
MTD,7.8-8.0MM,FT8
1
06-09782-000
BRKT-STDF,T,11 GA
CS,25.4
1
23-13482-003
TIE-FIR TREE
MTD,7.8-8.0MM,FT8
1
23-13863-000
BRKT-STDF,Z,11 GA
CS,31.8
1
23-13482-004
TIE-FIR TREE
MT,8.8-9.3MM,SHRT
1
1C Dual Fuel Tanks
2 All configurations
NOTE: use in place of
23-09130-033 --->
3 All configurations
Legend
Only requires one of parts
list
Applies to all applications
----------------------------------------------------------------------------------------------------------------------------------------------------------------------
Harness Routing 2
Vehicle Type: 106, 112, 108SD, 114SD
Transmission Type: 3K, 4K
Engine Type: Cum B6.7, Cum L9, Cum
X12, DD8, DD13
FOR M2 106, 108SD with DD8, Cum B6.7 or L9 engines:
1.
A) RH single fuel tank: Route harness together with fuel lines on LH and mount 06-09782-000 with
23-13482-003 on RH.
8
SS 1034558 OBD16 M2,108SD & 114SD Allison transmission not shifting due to harness chafing
2. A.1
LH Single Fuel Tank: Route Trans Harness together with the fuel lines using butterfly tie
straps (TYC DCT110HIR).
9
SS 1034558 OBD16 M2,108SD & 114SD Allison transmission not shifting due to harness chafing
3. A.3)
Dual Fuel Tank: Route harness together with the fuel lines and use the fuel line bracket to clip
the harness using 23-13335-002 -TIE-MNT,FIR TREE 6.5-7MM,FT7.
FOR M2 112, 114SD with DD13 and 114SD with X12 engines:
1. A For X12 and DD13 engines: Use the CLNT DEF lines to route the harness with Butterfly
Tie Strap TYC DCT110HIR.
2 B On
X12 and DD13 engines: Use bracket 23-09130-011, Nut
23-13833-108, washer 23-09114-000 and bolt 23-09440-150 on the Right
side of the transmission to route the harness coming down from the CLNT
DEF lines. Use 23-13482-003 -tie strap fir tree to clip the transmission
harness to the bracket.
10
SS 1034558 OBD16 M2,108SD & 114SD Allison transmission not shifting due to harness chafing
2 C For All engines: Use bracket 23-13863-000 on the Rear Front cover
of the Transmission housing to move the harness away from screws and
sharp edges. Use 23-13482-003 -tie strap fir tree to clip the transmission
harness to the bracket.
11
SS 1034558 OBD16 M2,108SD & 114SD Allison transmission not shifting due to harness chafing
3 General Comments:
3 A If dipstick makes transition from the left to the right side, use it to route
the harness with Butterfly Tie Strap TYC DCT110HIR:
•
•
•
Only for 3K ALSN Transmissions with DD8, B6.7 and L9 engines and DC 346-013.
Only for 3K ALSN transmissions with X12 Engines.
All engines with ALSN 4K transmission.
B Make
harness transition from the engine to the routing the harness
together with the dipstick.
12
SS 1034558 OBD16 M2,108SD & 114SD Allison transmission not shifting due to harness chafing
C Use thicker tie straps when to clip the harness when needed. (23-13476-000).
D When harness is clipped directly to the transmission, use Butterfly tie
strap TYC DCT110HIR instead of regular Tie Strap.
13
SS 1034558 OBD16 M2,108SD & 114SD Allison transmission not shifting due to harness chafing
Note : Parts list not provided for the harness routing 2 because of all of
the variations. Pick out parts needed based on applications listed with
each picture and step above.
14
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TSB/Document ID: SS1034558
Replacement Service Bulletin Number:
MFR Communication Date: 2020-02-28
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: POWER TRAIN
MFR Component System:
MFR Component Subsystem:
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