Jump to content

pcm4less + 4.3 = problems

DayUSeX

Recommended Posts

DayUSeX Enthusiast

DayUSeX

Posted
Posted

So I got my new pcm from pcm4less. It was from a 4.3 so they said there was no need for a crank relearn. So i plugged it in and woohoo. BUt here is something odd i noticed from the first day of driving

My idle before was like 500rpm, now its like 8-9 hundered. What the heck?! Is there a way to fix this, thanks. I did the firmer shifting as well and d**n it shifts hard maybe to hard :X ILl post back other results

DayUSeX Enthusiast

DayUSeX

Posted
  • Author
Posted

Oh yeah the hard shifting is good, until it downshifts and the bloody truck feels like its going to implode. So far I like it alot, but I have only driven 100 miles, ill report back at 500 with how I like the tune or not.

cerbomark Senior Enthusiast

cerbomark

Posted
Posted

I believe pcm4less is Bryan that you can call. On my 04 SS they did raise the idle in the tune but that can be put back to where you like it. He can also make the shifts a little softer by putting more torque managment back in. Doesn t sound like a problem. Drive it a little , then call if there is somthing you don t like. Good luck and Bryan is easy to deal with. The removal of torque management may be to rough on an older transmission.Bryan s # is 724-349-4431.

  • 1 month later...
DayUSeX Enthusiast

DayUSeX

Posted
  • Author
Posted

Well its pretty lame because he responds to none of my emails.

 

But the pcm eventually quieted itself down without the crank relearn. Upon first startup it still jumps to 1.500 and stays there, but once it warms up forthe rest of the day it will idle where it is supposed to.

 

I just wish he would reply to me so I could get more work done.

 

Definatly worth it though.

IMFLYN Enthusiast

IMFLYN

Posted
Posted
I believe pcm4less is Bryan that you can call. On my 04 SS they did raise the idle in the tune but that can be put back to where you like it. He can also make the shifts a little softer by putting more torque managment back in. Doesn t sound like a problem. Drive it a little , then call if there is somthing you don t like. Good luck and Bryan is easy to deal with. The removal of torque management may be to rough on an older transmission.Bryan s # is 724-349-4431.

 

 

So the 4.3L has torque management too? That's lame. I guess GM doesn't think the 4l65e can handle the MASSIVE power and torque of the v6. I've been trying to figure out if my 07 1500 has t.m.

 

Sorry for the hijack but internet explorer kept crashing when I tried to start a new thread.

Archived

This topic is now archived and is closed to further replies.

Go to topic listing

  • Latest Articles

  • Posts

    • Brendan C
      2026 6.6 L5P oil cooler leaking oil at 4,000 miles

      By Brendan C · Posted

      New to diesel trucks. I happened to find my oil cooler leaking oil externally with only 4,000 miles on the truck. I didn’t realize this was an issue until I started researching it. Dealer is going to replace it under warranty but I’m wondering if there’s anything GM is working on to fix this issue. I’ve heard the oil filter used is the same as they use on their V6 motors and that’s what is causing the problems. Should I switch to a bigger filter or keep using the OEM recommended? 
    • Vu1can
      Seems to be Missing a lot of Updates

      By Vu1can · Posted

      So, GMCustomerService:  Judging by the Update History pictured above, is this truck missing any updates that it actually needs. If it's just for the infotainment system, the radio is working fine and no trouble with SeriusXM. and Android Auto is working fine wirelessly with my phone. Some months ago, an update notice was sent to my truck. I approved the update and it finished saying that the update was successful, but it seems that whatever that update was, it didn't actually get installed - at least not if I'm to go by the Update History shown above.   So, again, are there any updates that this truck really should have? I've checked with my dealer but they're reluctant or commit to anything and if I want them to check, they require a $200.00 fee just to check it out and then I'd have to pay for the actual update(s).    Ignorance is bliss, and if none of the updates goes to fixing any mechanical discrepancies, I'll just leave things as is.  
    • CNH-320
      Electrical Problem - solved

      By CNH-320 · Posted

      Hey everyone, I recently had an issue with my 07 2500HD GMT900. My DRL’s stay on at all times. Right front turn and right mirror turn signal indicator stay on solid at all times. By “at all times” I mean the only way to make them go off is disconnecting the battery. I tore the headlight assemblies out, tried disconnecting the harnesses to eliminate bad wiring at the harness, I unplugged the headlight switch, no change and the mirror turn signal still stayed on. My first thoughts were : Bad bulb and/or socket somewhere, under hood fuse panel bad, bcm bad, tail light or trailer wiring problem, or some random short to power in the harness.  Possibly a bad ground but unlikely. I had a big clue in the fuse panel, it had a burnt smell. I started pulling every fuse that had to do with DRL or right turn/park lamp. Nothing made the right directional turn off but pulling the DRL2 fuse made the DRL’s go out.  After studying wiring diagrams, I found that both problems had that fuse panel in common, the bcm also controls both problems but knowing the fuse panel had a burnt smell I removed and disassembled the fuse panel and found a little corrosion on the printed circuit board.  I ordered a new fuse panel from Amazon for like $260. When it arrived I installed it, and put everything back together, the problem was fixed. I figured the fuse panel needed to be replaced anyway so that was a logical place to start. Hopefully this story helps someone in the future. Regretfully I didn’t scan for codes before I did everything.
    • 2022LtTbZ71
      Service 4wd, ESC light, traction control light on, Service charging system (vehicle may stall)

      By 2022LtTbZ71 · Posted

      That stinks. I’m sitting on the side of the road right now with the same issue. Never had an issue before taking it in for the ground strap recall. Now I’m outside of warranty and they’ll probably want $200 just to diagnose what they already “fixed”. 
    • jagabom (Esquire)
      Passenger seat

      By jagabom (Esquire) · Posted

      I wonder kind of nuts and bolts they will come up with next? Jim

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...