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  1. Transmission Shop
    Hello, first off I have searched this and went through 10 of the 25 pages, provided in my search. With that my question was not answered. I have a 2004.5 lly with the 5 speed Allison 1000, I’ve been doing all of the supporting mods and I’m almost ready to tune. I’d like to jump into my trans...
  2. Aftermarket Mods.
    First off curious to know what the max power the stock transmission can take with a transmission tune? Also is it more reasonable to rebuild or buy a new unit ? What’s the best bang for the buck? and I’m looking to be around 700 rwhp . Thanks!
  3. Transmission Shop
    Looking for a little help here boys. 06 LBZ with 115k. Throwing code P0877 transmission fluid pressure sensor/switch “D” circuit low. Trans is all stock besides a shift kit. I will occasionally get "range shift inhibited" on the dash and will stay in 3rd. I've cleared code/ restarted truck and...
  4. Transmission Shop
    Truck is throwing codes P0700, P0757 and P0847 after ripping her down the road. I have 120xxxmiles on my LBZ, deleted and tuned truck last month with MotorOps tunes sitting on 35" tires. truck wouldn't shift after check engine popped up. came to a stop, cleared codes and tried again. Truck...
  5. Transmission Shop
    drive 1997 K2500 chevy suburban with the 7.4L(454) big block and the stock 4L80E tranny is starting to go i think and i was curious if anyone knows if i would be able to put an allison into it with out a lot of modification, and if i can what model would be best or easiest, any info would be...
  6. 01-04.5 LB7 Duramax Powertrain
    Am I just paranoid?? So it started as a small leak between the tranny and engine. There was also a small leak next to my spin on filter this little aluminum tab thing (not sure what its for). Leak stopped fluid level is perfect but I can smell transmission fluid when I step out of the truck...
  7. Performance Upgrades
    Someone suggested me to get a Tuned ECM Upgrade - Stock Trans to Built Trans for $150 from duramaxtuner.com. i was wondering what that would all do for my truck and if its worth it
  8. Transmission Shop
    Need some info on shift kits please. Thinking about buying a transgo shift kit for my 04 lb7. Just bought the truck with 203000 miles. In the process of changing all injectors at this time so haven't driven the truck much to tell how the transmission shifts. Truck had bully dog programmer...
  9. Transmission Shop
    I have a 2003 with the Allison transmission, i'm currently running Amsoil transmission fluid, Yesterday i was doing a monthly check and noticed fluid around the shift linkage on the transmission. There is also some fluid around the vent. No leaks when truck is running in neutral. Checked the...
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