Jump to content

5.3 10spd shudder

TeamSaris
 Share

Recommended Posts

TeamSaris Enthusiast

TeamSaris

Posted
Posted

Feels like I hit a rumble strip on decel, usually around 15mph. Not everytime, doesn't seem to matter hot or cold. Not a brake issue. Im not convinced its a trans issue either. Almost thinking its DFM related. Took it to the dealer, they couldn't replicate. I took the service manager for a ride and could only get it to do it once. He didn't seem worried, but said he would document it. Any else?

kmeleon Enthusiast

kmeleon

Posted
Posted
15 hours ago, TeamSaris said:

Feels like I hit a rumble strip on decel, usually around 15mph. Not everytime, doesn't seem to matter hot or cold. Not a brake issue. Im not convinced its a trans issue either. Almost thinking its DFM related. Took it to the dealer, they couldn't replicate. I took the service manager for a ride and could only get it to do it once. He didn't seem worried, but said he would document it. Any else?

Yup I feel it too. When I shift to L9 instead of drive I don't feel it. So my guess is DFM causing the shudder. Try L9 and see if it does it. 

TeamSaris Enthusiast

TeamSaris

Posted
  • Author
Posted

Ill pass that techlink along to the dealer thanks!

Ill try L9 today too. Range still have nothing for the 10 spd?

kmeleon Enthusiast

kmeleon

Posted
Posted
19 hours ago, TeamSaris said:

totally different truck in L9....and no shudder. Cmon range. Do the 10spd!!!

 

Told ya, I believe my SEL that keeps flashing as I pull up to stop signs are actually being caused by the DFM shutter on decel, not the accel. 

 

I'd happily buy a Pulsar if I just didn't like the way the truck drove.... But the light flashing is BS and I'm not letting this go. I've talked to GMC and got the dealer GM involved now. 

bjr2020 6.2 Enthusiast

bjr2020 6.2

Posted
Posted

Tried a pulsar myself didn’t like the way the truck felt so sold it. I just run truck in L9 below 50mph. L10 above 50mph open to a dfm workaround if anything is available besides the pulsar I truck didn’t agree with it. 

  • 2 weeks later...
TeamSaris Enthusiast

TeamSaris

Posted
  • Author
Posted

I like the Pulsare so far. I wish it was harder to adjust the throttle response, I hit it a lot lol. Happy with it otherwise and no shudder

ajs800 Enthusiast

ajs800

Posted
Posted

I was hoping my shutter/misfire feel was related to the DFM (as my dealer states) as I'd give the Pulsar a try but unfortunately it is not the DFM. I've been running it in L9, L8 and i still get the shutter/misfire feeling when slightly accelerating while at cruising speeds.  50mph, 60mph, 70mph, etc.  once i step into it to downshift it clears up but while cruising with slight load, it's the farthest thing from smooth with a shutter/jerky/lugging type feel while increasing speed.  I'm starting to think it's tranny related or engine (while under load). 

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing

  • Latest Articles

  • Posts

    • Atlas
      Acceptably cheap tires?

      By Atlas · Posted

      Which one, the AT or AS?   Starfire is made by Cooper/Goodyear but at $85/tire I'd think I'd need to level-set my expectations that they may not even be round 😉 But you're saying they're decent?   I'm already into this thing $1506 in parts, fluids, etc. Totaled all my receipts today. $250 of that was replacing an EGR and MAP sensor that were probably fine, but I'm not going to return the parts since they've been installed. I'm cheap, but not that cheap. I use it, I keep it!   I may or may not make money if I sell the truck at this point, but, that wasn't really the point. And if I billed my time, I'd be hosed for real. My thought on the tires is I "might" put 1,000 miles on before selling it. I just don't want to put absolute junk on it, that doesn't do anyone any good. If the Solus solidly isn't junk, I'll definitely consider them.        
    • rjgvt
      Is your l8t engine bay super dusty?

      By rjgvt · Posted

      I leave mine as is. I'm always a trip away from riding on unpaved roads. Dealer can clean it when they prep it after I trade it in for another new truck.
    • Grumpy Bear
      Acceptably cheap tires?

      By Grumpy Bear · Posted

      I have these on two vehicles and love them. Pepper is one of them 😉 
    • Atlas
      Acceptably cheap tires?

      By Atlas · Posted

      4WD. Far as I know it came stock with P's and not LT's. Definitely planning to put P's on it, but stock is a 109 XL load rating so I should probably stick within that guideline.   No rebates on anything I can see at the moment. Discount Tire is offering $50 off, but Pep Boys is very competitive on price, and also carries all the off-brand stuff. Les Schwab always wants an arm/leg, but they do good work.   It still has the original spare. Goodyear Wrangler RT/S, thing looks like a tractor tire LOL!! How times have changed.    
    • JohnRoy
      2020 Sierra 2500 windows rolling down

      By JohnRoy · Posted

      2020 Sierra 2500 HD (base model) gas engine 4wd.    All 4 windows roll down on their own. Happens somewhat randomly after stop and engine off - when engine turned off, when walking away from vehicle before or after locks activated. Pulled the window fuse F14 Instrument Panel Fuse Block Right; the driver's side still activates from driver's side door panel; passenger and back seat windows activate from local switches on their doors but not from driver's side group of switches. Power mirrors don't activate with fuse removed either (same fuse for both circuits). Problem not solved.    How can they even activate with fuse removed but they are all still opening and can control from each door?  When they open on their own, I can shut them from the switch in each door, but they don't stay closed.    Seems to be activated somehow with key fob; something bumping the key fob in my pocket or just handling - removed key fob and took it far enough away and now the windows stay closed. Replaced key fob batty just in case, no change.    Sounds like some kind of wiring short or maybe electronics. Dealer will first replace electronic control module without checking anything else and I anticipate problem will still exist since their troubleshooting skills are limited to "do whatever the computer says".  In any case, keyfob seems to be activating the circuitry.    Surely I'm not the only one with this issue, but I can't find anything related on the site. What do yall think?   JohnRoy  

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...