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Related Medium and Heavy Trucks Questions
Do you have much old allison transmission experience? I am
Hello Do you have much old allison transmission experience? I am working on a 1994 international 4900 with one. It will not move forward any but reverse works. It has a shift lever not the push button… read more
Steven
Steven
Triage Tech/Shop Foreman
Associates
11 satisfied customers
Transmission indicator giving me SM and wont shift,
transmission indicator giving me SM and wont shift … read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,243 satisfied customers
My 1993 GMC topkick runs at 3500 rpm at 60 MPH. It used to
my 1993 GMC topkick runs at 3500 rpm at 60 MPH. It used to run around 2500 rpm @ 60 mph. What could be wrong with the tranny? … read more
roybelding
roybelding
Shop Foreman Freightliner trucks
Associate Degree
8,256 satisfied customers
1993 blue bird tc2000, go to start, turn key on, reverse
1993 blue bird tc2000, go to start, turn key on, reverse lights and alarm go on, turn key to start, does not turn over. … read more
Curtis B.
Curtis B.
Technician
Associate Degree
991 satisfied customers
I just bought a 1995 GMC Topkick Model with a 3116 Cat with
I just bought a 1995 GMC Topkick Model with a 3116 Cat with a MD 3560P Allison automatic, I have the push button shift selector on it, I cant shift manually using the arrow keys if I wanted, any sugge… read more
][\][iCk0411
][\][iCk0411
Fleet Warranty Manager
Vocational, Technical or Trade School
5 satisfied customers
I work for Trash Man who has a 1989 IH 8y3 Dump truck with
I work for Trash Man who has a 1989 IH 8y3 Dump truck with an AT545 transmission that will not shift into high gear (3rd) problem was intermittent where if I feathered the accelerator it would shift i… read more
Curtis B.
Curtis B.
Technician
Associate Degree
991 satisfied customers
I have an Allison AT545 in a 1999 School bus. it appears to
I have an Allison AT545 in a 1999 School bus. it appears to have no response to Kickdown. no matter if my foot is to the floor or at light throttle it shifts to 4th gear at 41 MPH. if I let the bus sl… read more
Curtis B.
Curtis B.
Technician
Associate Degree
991 satisfied customers
I have a 1990 topkick truck with a 366 and will not rev up.
i have a 1990 topkick truck with a 366 and will not rev up. it will idle fine. ive replaced the coolant temp sensor,distributor and cap. what else to check? it doesnt have any codes.… read more
Doug Barnowski
Doug Barnowski
HD truck tech
14 satisfied customers
1994 gmc c6000 top kick 6.0 366 v8 big block and at545
1994 gmc c6000 top kick 6.0 366 v8 big block and at545 allison tranny. Just put in remanufactured tranny for the third time and the front seal is pouring. Last one had the same problem but not as bad … read more
Curtis B.
Curtis B.
Technician
Associate Degree
991 satisfied customers
Transmission not shifting , transmission model AT 545
transmission model AT 545 on Mitsubishi fuso fm-mr … read more
Curtis B.
Curtis B.
Technician
Associate Degree
991 satisfied customers
I have a 2006 Ford F650 pro loader with 5.9 liter and
I have a 2006 Ford F650 pro loader with 5.9 liter and Allison. I had a problem with a broken power wire to the TCM. We fixed the wire and the truck was driving fine. I went to take the truck out after… read more
spankyjr1
spankyjr1
Retired
Vocational, Technical or Trade Scho
696 satisfied customers
Chevrolet c5500: I have a 2009 c5500 8.1l Allison transmission.
I have a 2009 c5500 8.1l Allison transmission. Just had tranny replaced. It now runs and more often than not lately it will not shift out of 2nd or 3rd. Turn truck off a few and then its fine. Did tha… read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,243 satisfied customers
Allison trans in 3000 gals tank truck light came on dash truck
Allison trans in 3000 gals tank truck light came on dash truck shut down fluid checked truck restarted light still on moved truck about 30-40 yards buzzer started wrench symbol appeared between indica… read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,243 satisfied customers
gmc c6000: 1994 gmc topkick c6000 with 6.0 366 big block and
1994 gmc topkick c6000 with 6.0 366 big block and Allison transmission. Just put new engine and transmission in it, got it in time and it started right up and ran great in idle but when you put it in … read more
Curtis B.
Curtis B.
Technician
Associate Degree
991 satisfied customers
Transmissions F750: Have a 2008 Ford with cat diesel and Allison
Have a 2008 Ford with cat diesel and Allison transmission. Changed fluids and filter. Truck moves in reverse and low gear forward. Won't shift out of low gear.… read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,243 satisfied customers
2006 GMC w4500 5.2L diesel cab over aisin 4 speed auto tranny.
2006 GMC w4500 5.2L diesel cab over aisin 4 speed auto tranny. My question is: what would cause reverse to not work? Also it feel like when in truck is in "D" from a stop it feels as if your starting … read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,243 satisfied customers
have a hesston 180-90. was driving and shifted from first to
have a hesston 180-90. was driving and shifted from first to second on the power shift .the tractor made a slight hesitation and came to a stop.it has a new pump on it and the sterring pressure is sti… read more
spankyjr1
spankyjr1
Retired
Vocational, Technical or Trade Scho
696 satisfied customers
94 gmc topkick c6000 park brake doesnt work causing no park
94 gmc topkick c6000 park brake doesnt work causing no park because park brake is park in the transmission.… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
2,803 satisfied customers
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Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

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