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limp mode

  1. 01-04.5 LB7 Duramax Powertrain
    Hey guys, yesterday i was headin to work in my 02 duramax and my truck revved up and i think it came outta 5th gear and into 4th and the service engine light came on. I was going about 65 on cruise, and i hit the gas to accelerate to go around this car and thats when it happened. Any ideas? to...
  2. Transmission Shop
    Hey there! First time posting but really need some help. 3 days ago I changed my tranny fluid, did lots of small driving and stuff around town, yesterday had to leave town for work and got 30min outside my home town and truck shifted hard into 4th no other gears. Well, obviously limp mode but I...
  3. 911 Problems Forum
    Im new this seemed like the best place to post as I've been tackling it for months. I'll try to keep it short Bassicly trucks at 620xxxkm shes beat the fans owned it since 05 n I'm trying to do it cheapest way possible Bought "new" trans (330xxx) , just did trans, still in limp...I RODE IN THE...
  4. 07.5-10 LMM Duramax Powertrain
    I've been chasing the Reduced Engine Power ghost with no codes for about 2 weeks now. I've dug through all of the forum posts on several websites as well as the LMM facebook pages so I won't bore you with all of what they've said. My truck specifically, after the key goes into the ON position...
  5. 01-04.5 LB7 Duramax Powertrain
    Ok im finally having problems and they are turning into big ones. first ill start off with what i have. 2003 2500 LB7, slightly modded with the edge programmer and a 5 inch exhaust Driving habbits: when i first got the truck three years ago i did alot of hard off roading. for the past year...
  6. Transmission Shop
    I just got done putting another used motor in my 2003 duramax i took it for a short test drive ran fine a few mins later i went for another and it went into limp mode at 45mph, and now after i cleared all DTCs still as soon as i put it into drive it locks itself into limp mode it will go into...
  7. Transmission Shop
    Need some assistance here from the Allison experts here. I'll start with what the truck is doing/codes thrown and provide some back-story on things I’ve changed before this started to happen. Truck - '02 Silverado 3500, 4x4. Everything is stock. I do have aftermarket MBRP exhaust, Banks...
  8. 911 Problems Forum
    My truck keeps going into limp mode and throwing the p1093 code I installed the ppe race valve and changed my fuel filter and I have no idea what else to check any help would be great
  9. 01-04.5 LB7 Duramax Powertrain
    So0o i tryed putting my tuner on level 5 today just to see wut the difference was. i usually leave it on 90hp cause i dont wanna break nutting. Long story short i was on it at bout 90 i have a 110 cut off point and right at 97 she completly cuts out. i coast back to a gas station when the light...
  10. 911 Problems Forum
    took off in my 01 duramax two days ago, and it instantly trans limped for some reason,... just did spin on 2 days before. pulled over and shut the truck off to let it reset. then it wouldn't move in any gear.... the gear indicator would just flash on each gear.. only way i got it goin again was...
  11. 911 Problems Forum
    I have a 2007 that keeps going into Limp Mode only when towing. I had it to the dealer several times with no luck. All filters have been changed.
  12. 911 Problems Forum
    Hey guys hope you can help me out here. Quick recap, going up a little hill and got on it a little, felt like the tranny went into limp wouldnt shift. Shut it off and restarted it and it feels fine. But I still got 2 codes 1. po777 pres ctrl solenoid b stuck on 2. po700 trans ctrl sys error...
  13. 911 Problems Forum
    My lly has been going into limp mode for a month now off and on due to a fuel issue. It makes a knock and wont go over 2k rmp. This if a off and on issue. I took it in ti twin peaks diesel in colorado and they charged me $300 for a injector harness repair kit and install. The truck ran great for...
  14. 911 Problems Forum
    Like title says my truck is in limp mode but it's not throwing any codes. :confused: I can shut off the truck and restart it to regain full power for a few minutes then it's back to Reduced power. I have tried resetting the ecm with the tuner and different tunes. Today, I had the tranny serviced...
  15. 911 Problems Forum
    So I've been battling a limp mode issue that simply won't present itself with a trouble code.....yippie....I've changed every filter in the truck and given the trans a good once over with nothing to report. Here's what the truck does..... Take off from driveway and truck seems fine.....boost...
  16. 911 Problems Forum
    as you can see i have a 05 lly.........since january i have been fighting an on goin battle with my truck (well not nessesarily the truck but this so-called lly). it all started when i was pulling a heavy load to florida right after comin from denver:gearjamin. i notice my truck having some hard...
  17. 911 Problems Forum
    im working on a 04 duramax that out of the blue went in to limp mode and popped these codes p0207, p1293 p0742 any ideas?
  18. 911 Problems Forum
    Hey all! Getting desperate here. 2005 2500HD LLY 6.6L Was getting on the parkway the other day outside of Pittsburgh and the check engine light came on. That very second, the truck went into what I've been told is a "limp mode". Ran terrible, couldnt get it on the triler unless i dropped it in...
  19. 911 Problems Forum
    my tranny line going to my cooler is leaking slowly, but enough where its making a mess all over my a arm and lift kit(the bracket) i was told this would throw my tranny into limp mode, is that why it seems like my trucks not running liek its sopose to? no codes are poping up on my banks or the...
  20. 911 Problems Forum
    I have a 2005 GMC 3500 Dually. It has the Edge on it that I strictly leave in mode 1 (stock). I have larger tires than stock, and pull a 36 foot Raptor Toyhauler 5th wheel (about 15,000 lbs). Several times a year (usually in cold weather), the tranny will limp (no overheating, tranny runs quite...
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