+ Reply to Thread
Results 1 to 10 of 10

Thread: Could i have a fried PCM?

  1. 06-23-2009 03:44 AM #1
    03chevytruck
    03chevytruck is offline Monroe Muscle
    Join Date
    Sep 2007
    Location
    Monroe,Louisiana
    Posts
    194

    Could i have a fried PCM?

    Im sure you guys are aware of my truck being in reduced engine power. I dropped it off with a guy that works at a dealership. He said that the computer is bad or i lost my tune... If my computer is bad why does the truck work sometimes? i can start the truck and clear the codes. It will idle fine but when it is reved over 1500 or so it goes back into reduced engine power. I even drove it around the block right before i left for work and it did great but when i pulled into the driveway it returned to REP. What are you guy's input.. Fried PCM/ ''lost tune'' or something else. i dont think it lost my tune because it would not run or even idle with my cam if it lost the tune...
    2003 RCSS Chevy 5.3L Fully Bolted, Cammed, Yanked, and 342s. Borla Exhaust w/ Electric Cutouts.
    Reply With Quote Reply With Quote
  2. 06-23-2009 08:09 AM #2
    GasGuzzler's Avatar
    GasGuzzler
    GasGuzzler is offline Pants on the ground
    Join Date
    Aug 2008
    Location
    North Texas
    Posts
    12,078
    Not sure what "lost the tune" means. Any other electrical problems that might seem unrelated?
    Reply With Quote Reply With Quote
  3. 06-23-2009 02:24 PM #3
    03chevytruck
    03chevytruck is offline Monroe Muscle
    Join Date
    Sep 2007
    Location
    Monroe,Louisiana
    Posts
    194
    No other problems that i have noticed... Fans come on, dash works, radio works, all lights work. Really starting to get pissed... I dont know what to do to get it running! Im sure a certain someone could get the problem fixed while installing a front mount turbo.....
    2003 RCSS Chevy 5.3L Fully Bolted, Cammed, Yanked, and 342s. Borla Exhaust w/ Electric Cutouts.
    Reply With Quote Reply With Quote
  4. 06-23-2009 02:27 PM #4
    Show&Go's Avatar
    Show&Go
    Show&Go is offline Senior Member
    Join Date
    May 2008
    Location
    Crossett,Ar
    Posts
    2,382
    who is your tuner. I have the card to a fellow in monroe that tunes. Id get him to take a GOOD look at it. If it lost a tune or the tune is just bad maybe he could find it?

    06 Intimidator SS- Tuned, CAI -DD
    03 Silverado- Last incarnation 13.6... RIP
    Ls1, Pnp heads, Polluter camshaft, spray, 4k stall on the way
    "Seize the day like you seize your noodle" - Shin Chan
    Reply With Quote Reply With Quote
  5. 06-23-2009 04:13 PM #5
    03chevytruck
    03chevytruck is offline Monroe Muscle
    Join Date
    Sep 2007
    Location
    Monroe,Louisiana
    Posts
    194
    hmm. didnt know there was anyone in monroe... I have a thunder racing tune.
    2003 RCSS Chevy 5.3L Fully Bolted, Cammed, Yanked, and 342s. Borla Exhaust w/ Electric Cutouts.
    Reply With Quote Reply With Quote
  6. 06-23-2009 04:32 PM #6
    07SS's Avatar
    07SS
    07SS is offline Junior Member
    Join Date
    Mar 2008
    Location
    Crossett, AR
    Posts
    24
    there is a shop in STRONG that tunes....STONG PERFORMANCE
    13.84 @ 99 MPH....good ole fashion stock
    Reply With Quote Reply With Quote
  7. 06-23-2009 07:04 PM #7
    03chevytruck
    03chevytruck is offline Monroe Muscle
    Join Date
    Sep 2007
    Location
    Monroe,Louisiana
    Posts
    194
    i will get it dyno tuned at thunder racing if its the tune... The Question is could it be that my PCM is bad?
    2003 RCSS Chevy 5.3L Fully Bolted, Cammed, Yanked, and 342s. Borla Exhaust w/ Electric Cutouts.
    Reply With Quote Reply With Quote
  8. 06-23-2009 09:07 PM #8
    Show&Go's Avatar
    Show&Go
    Show&Go is offline Senior Member
    Join Date
    May 2008
    Location
    Crossett,Ar
    Posts
    2,382
    It could be the ecm. Ive heard of such. Id get someone close by to take a look at it.

    06 Intimidator SS- Tuned, CAI -DD
    03 Silverado- Last incarnation 13.6... RIP
    Ls1, Pnp heads, Polluter camshaft, spray, 4k stall on the way
    "Seize the day like you seize your noodle" - Shin Chan
    Reply With Quote Reply With Quote
  9. 07-13-2009 12:42 AM #9
    storm2k7's Avatar
    storm2k7
    storm2k7 is offline Junior Member
    Join Date
    Jul 2009
    Location
    bryan, tx
    Posts
    19
    my boss had similar on a stock 03 and replaced the gas pedal, throttle body and harness that goes down the passenger side of the intake. The dealership says the harness is most likely. if that helps
    2000 sierra, full airaid system, cherry bomb extreme, soon to be tuned
    1987 sierra classic w/chevy badges custom everything: system, interior, paint, wheels and everything else
    Reply With Quote Reply With Quote
  10. 07-13-2009 01:56 AM #10
    randomhero's Avatar
    randomhero
    randomhero is offline Senior Member
    Join Date
    Mar 2007
    Location
    Austin,TX
    Posts
    479
    You don't "lose" a tune. The tune is written to the pcm. It doesn't resort back to stock if it fried or the battery is disconnected or whatever. Basically there is no "reset button"

    The dealership is able to reflash pcms back to stock though which is possible if you took it to them before this occurred.
    Reply With Quote Reply With Quote
+ Reply to Thread
« Previous Thread | Next Thread »

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts

Forum Rules