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Thread: stumbling at idle 2003 4.8....TPS sensor problems?

  1. #11
    Join Date
    Jan 2009
    Location
    Augusta, Ks
    Posts
    3,246
    Looks like your computer is wacky
    2000 Silverado ECSB- 5.3 CAI, Pacesetter LTs, ORY- Pipe, Magnaflow XL, E-fan, Ported T/B , Nelson Tuned, Built 4l60e, Circle D Stall, 3.42s G80, 2-4 Drop, Hertz Highs, Rockford 501s

    2004 Buell XB12s

    Quote Originally Posted by LamboDoNoMo View Post
    "Never give up, NEVER BACK DOWN!!!"

  2. #12
    Join Date
    Aug 2007
    Location
    Gramercy
    Posts
    945
    my phone will double post for me lol
    anyway how long has he owned the truck? he should take it back to the dealer under the lemon law..im not too sure of it but i know id be extre ely mad if i bought a poo truck.
    2008 GMC CCSB 6.2/6L80e swap
    Gen IV 5.3/60e swap 1994 ecsb W/T

  3. #13
    Join Date
    Jul 2008
    Posts
    329
    It's doubtful the dealer is even aware of the issue. Most dealers do little more than steam-clean the engine, vacuum the interior, and put that nasty black stuff on the tires before putting a used vehicle on the lot.

  4. #14
    Join Date
    May 2004
    Location
    NAS China Lake California
    Posts
    132
    WELL....Throttle Position Sensor....no communication on channels A and B is what my friend is telling me the codes are....hmmm....HOPEFULLY that fixes it....and now we can rip out all of that wiring for the alarm and rewire this friggin sterio so that it WORKS, and isnt a HACK JOB! THANKS FOR EVERYONE'S HELP!!!
    Last edited by JeRM82; 01-03-2010 at 09:44 PM.

  5. #15
    Join Date
    Apr 2008
    Location
    Quartz Hill, CA
    Posts
    58
    You know I have the hookup on GM Parts.

    If you need some help troubleshooting the DBW system just let me know.

  6. #16
    Join Date
    May 2004
    Location
    NAS China Lake California
    Posts
    132
    Quote Originally Posted by Ydtrack View Post
    You know I have the hookup on GM Parts.

    If you need some help troubleshooting the DBW system just let me know.
    THANKS Craig....the throttle body got cleaned and the truck runs like a champ now! AMAZING....AND CHEAP! HA HA! THANK YOU EVERYONE FOR YOUR HELP! The truck runs and has the radio rewired correctly.....now we just have to putt out the alarm crap....ugh...I HATE when a dealership just cuts the power to an alarm system and just leaves EVERYTHING in there! They didnt even give the kid TWO keys! He got ONE key....and no alarm fob/keychain thing.....

  7. #17
    Join Date
    Aug 2008
    Location
    North Texas
    Posts
    12,078
    Clean the throttle blade.

  8. #18
    Join Date
    Aug 2009
    Location
    venice, florida
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    231
    I see you guys are talking about the dbw system, hopefully someone will have some insight for me. I had posted on another page but either wasnt clear or just put it in wrong forum. My truck is an 03 caddy 5.3 and my problem is the accelorator pedal position sensor is bad. when the truck goes into reduced engine power mode i can shut it off, wiggle the plug on the sensor, and be on my way. My pedals are power adjustable and dealer-only to the tune of 280.00 bucks because it replaces entire assembly. Does anyone know of an aftermarket supplier or is there a part number for the sensor specifically, not with pedal,power motor,ect.

  9. #19
    Join Date
    Apr 2008
    Location
    Quartz Hill, CA
    Posts
    58
    Quote Originally Posted by sloCaddy View Post
    I see you guys are talking about the dbw system, hopefully someone will have some insight for me. I had posted on another page but either wasnt clear or just put it in wrong forum. My truck is an 03 caddy 5.3 and my problem is the accelorator pedal position sensor is bad. when the truck goes into reduced engine power mode i can shut it off, wiggle the plug on the sensor, and be on my way. My pedals are power adjustable and dealer-only to the tune of 280.00 bucks because it replaces entire assembly. Does anyone know of an aftermarket supplier or is there a part number for the sensor specifically, not with pedal,power motor,ect.
    GM Parts Direct is a good place to look.

    I get all my parts from Pace Parts because they give a discount to members of different message boards.

  10. #20
    Join Date
    Feb 2007
    Location
    Fort Worth
    Posts
    9,578
    Quote Originally Posted by sloCaddy View Post
    I see you guys are talking about the dbw system, hopefully someone will have some insight for me. I had posted on another page but either wasnt clear or just put it in wrong forum. My truck is an 03 caddy 5.3 and my problem is the accelorator pedal position sensor is bad. when the truck goes into reduced engine power mode i can shut it off, wiggle the plug on the sensor, and be on my way. My pedals are power adjustable and dealer-only to the tune of 280.00 bucks because it replaces entire assembly. Does anyone know of an aftermarket supplier or is there a part number for the sensor specifically, not with pedal,power motor,ect.
    The wires or connectors have something going on. Maybe they have been kicked/something hit them? I know its a PITA, but can you disconnect the wires and check the condition of the pins in the connector? Or can you use some Southern Engineering skills and use a zip tie to hold the wires in a certain position where this won't happen?

    2000 ECSB 6.0L
    TORQUER V2 CAM ● COMP 918's ● 7.4 HARDENED PUSHRODS ● K&N SERIES 77 CAI ● 80mm BBK ●PACESETTER LT HEADERS AND 3'' ORY ● SUPER 40 FLOW ● 3000 STALL ● 4.10s ● BUILT 80e ● VORTEC PERFORMANCE TUNE ● MSD 8.5mm PLUG WIRES● ELEC. CUTOUT ● UD & ALT PULLEYS ● FLEX-A-LITE E-FANS ● 22" CENTERLINE STINGRAY III's ● LUND FIBERGLASS TONNEAU ● 2" LEVELING SHACKLES ● 12K HID LOWS & FOGS ● LEDs ● DEBADGED ● WHITE-FACED ESCALADE GAUGES ● KICKER 450.1 ● 2-CVR 10's ● DS60's ● K693's

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