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Technical Service Bulletins

Search 172,063 manufacturer communications covering 879 vehicle makes from 1955 to 2025.

172,063 Unique Bulletins
4,686,952 Total Records
879 Vehicle Makes
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Showing 449 bulletins for ALLISON

25-1k2k-23 Mar 7, 2024
ALLISON — 1000 SERIES TRANSMISSION, 2000 SERIES TRANSMISSION — 4 vehicle combinations
100000 POWER TRAIN
Notice regarding compatibility of the 4th Generation A50 transmission control module (TCM) and the GM T14 TCM in 1000 and 2000 series transmissions
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SIL 06-TR-24 Mar 1, 2024
ALLISON — 1000 SERIES TRANSMISSION, 2000 SERIES TRANSMISSION, 3000 SERIES TRANSMISSION, 4000 SERIES TRANSMISSION — 4 vehicle combinations
103800 POWER TRAIN:AUTOMATIC TRANSMISSION:PARK/NEUTRAL START INTERLOCK SWITCH
Notice regarding change restrictions to certain vehicles' neutral-at-stop calibration for vehicles with EPA/CARB certifications via Allison's NAS feature.
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24-TR-23 Dec 15, 2023
ALLISON — TRANSMISSION
103100 POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM)
Notice regarding part compatibility for a discontinued part.
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SIL-17-EP-23 Nov 20, 2023
ALLISON — ALLISON DIV, TRANSMISSION — 4 vehicle combinations
350000 EQUIPMENT
Service tip for replacing ESS1 BCIM with ESS2 BCIM service parts.
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TT9108EN Nov 20, 2023
ALLISON — ALLISON DIV, TRANSMISSION — 4 vehicle combinations
102300 POWER TRAIN:MANUAL TRANSMISSION:SHIFT PATTERN INDICATOR
Tip for servicing shift-selector issue.
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SIL-23-EP-23 Nov 16, 2023
ALLISON — ALLISON DIV, TRANSMISSION — 4 vehicle combinations
101200 POWER TRAIN:CLUTCH ASSEMBLY:BELL HOUSING
Announces new C1 clutch housing and service tip.
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22-1k2k-23 Oct 26, 2023
ALLISON — TRANSMISSION — 2 vehicle combinations
100000 POWER TRAIN
Service tip for servicing diagnostic trouble codes related to transmission fluid pressure in certain OEM vehicles
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21-TR-23 Oct 18, 2023
ALLISON — TRANSMISSION
355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
Announces release of TCM Reflash V7.3
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IS-297 Rev A Oct 11, 2023
ALLISON — 1000 SERIES TRANSMISSION, 2000 SERIES TRANSMISSION, 2400 SERIES TRANSMISSION, 3000 SERIES TRANSMISSION, 4000 SERIES TRANSMISSION, 5000 SERIES TRANSMISSION, 6000 SERIES TRANSMISSION, 8000 SERIES TRANSMISSION, 9000 SERIES TRANSMISSION, TRANSMISSION — 10 vehicle combinations
103200 POWER TRAIN:AUTOMATIC TRANSMISSION:FLUID/LUBRICANT
Process for fluid sampling
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IS-367 Rev C Oct 11, 2023
ALLISON — 3000 SERIES TRANSMISSION, 4000 SERIES TRANSMISSION, TRANSMISSION — 3 vehicle combinations
160000 STRUCTURE
Instructions for installation of retarder air accumulator
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SIL02-TR-23 Feb 24, 2023
ALLISON — TRANSMISSION
060000 ENGINE (PWS)
Announces cancellation of retarder part number
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SIL03-WT-23 Feb 16, 2023
ALLISON — TRANSMISSION
350000 EQUIPMENT
Service tip for using locknut in retarder air solenoid
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SIL-16-WT-20 Jan 30, 2023
ALLISON — 3000 SERIES TRANSMISSION, 4000 SERIES TRANSMISSION, ALLISON DIV, B SERIES, B300, B400, H 40 EP TRANSMISSION, H 50 EP TRANSMISSION, T SERIES — 9 vehicle combinations
060000 ENGINE AND ENGINE COOLING
Service letter providing notice of redesigned piston seals and piston, air solenoid valve nipple, and air solenoid valve fitting
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KC-2240 Jan 25, 2023
ALLISON — ANTHEM (AN), GRANITE (GR), PINNACLE (PI), TERRAPRO (TE), TRANSMISSION (2022) — 10 vehicle combinations
100000 POWER TRAIN
Allison Reduced Engine Load at a Stop (RELS) Diagnostic Trouble Code P071a Or P07ce - GR/TE Models Built June 2022 to October 2022
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WATCH-599 Jan 13, 2023
ALLISON — 3000 SERIES TRANSMISSION, 4000 SERIES TRANSMISSION — 2 vehicle combinations
350000 EQUIPMENT
Notice announcing release of new retarder lever to replace prior part numbers
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SIL-08-TR-22 Jan 10, 2023
ALLISON — 1000 SERIES TRANSMISSION, 2000 SERIES TRANSMISSION, 3000 SERIES TRANSMISSION, 4000 SERIES TRANSMISSION — 4 vehicle combinations
100000 POWER TRAIN
Servicing tip for vehicles with DTC P0602
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SIL-17-TR-22 Jan 3, 2023
ALLISON — 3000 SERIES TRANSMISSION, 4000 SERIES TRANSMISSION — 2 vehicle combinations
103300 POWER TRAIN:AUTOMATIC TRANSMISSION:GEAR POSITION INDICATION (PRNDL)
Notice related to display options for the push button shift selector
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SIL 14-TR-22 Sep 27, 2022
ALLISON — TRANSMISSION
114500 ELECTRICAL SYSTEM:WIRING:RELAYS/SOLENOIDS
Announces change to the resin color used to produce the end caps for several solenoids
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T2549 Sep 22, 2022
ALLISON — L9, TRANSMISSION — 2 vehicle combinations
100000 POWER TRAIN
This Temporary Repair Practice is being issued to address failures related to fault codes 124 and/or 3342 on certain L9 CM2350 Hybrid Bus engines with Allison Transmission Systems only. This TRP authorizes certified repair locations to repa
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SIL09-1K2K-22 Aug 29, 2022
ALLISON — TRANSMISSION
350000 EQUIPMENT
Notice introducing improved design of the Carrier Assembly, P2 Planetary
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ST-1099 Aug 11, 2022
ALLISON — TRANSMISSION
100000 POWER TRAIN
Service tip notice related to transmission fluid and filter change recommendations
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SIL-10TR99 Aug 10, 2022
ALLISON — TRANSMISSION
100000 POWER TRAIN
Details transmission fluid types and service intervals
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SIL-12EP22 Aug 1, 2022
ALLISON — TRANSMISSION
355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
Notice providing basic trouble shooting for eGen Flex
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TI8989 Jul 19, 2022
ALLISON — 1000 SERIES TRANSMISSION, 2000 SERIES TRANSMISSION, 3000 SERIES TRANSMISSION, 4000 SERIES TRANSMISSION — 4 vehicle combinations
100000 POWER TRAIN
6th Generation Controls Release.
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TT8484 Jul 8, 2022
ALLISON — 1000 SERIES TRANSMISSION, 2000 SERIES TRANSMISSION, 3000 SERIES TRANSMISSION, 4000 SERIES TRANSMISSION — 4 vehicle combinations
100000 POWER TRAIN
Diagnostic Trouble Code P0658 Actuator Supply Circuit Low ? HSD1.
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