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  1. #1

    Default loss of power plz help ~ 2001 Chevy Silverado

    Hey when I floor my 2001 silverado from a dead stop or when im already moving it has major power loss but if i give it about 75% throttel it takes off alot faster any ideas on what it can be?

  2. #2

    Default

    How many miles? What type of engine/tranny, etc. Could be a lot of things.

    Steve
    10 Chevy Traverse LT AWD
    02 Chevy Trailblazer LS (110K+ miles - loaded except for 4WD - WRECKED!)
    99 Chevy Cavalier LS (105K+ miles - commuter car)
    78 Chevy Suburban Silverado (454, 3/4 ton)
    62 GMC 3/4 ton Pickup (350 police interceptor)

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  3. #3

    Default

    its the 5.3L v8 and the tranny is a 4L60E and it has 200k miles



    The Following Reply from member.....99'HEARTBEAT,
    Before spending any money, I would first have your fuel pressure checked......also with 200K miles what kind of Maintenance have you done??

    Edit:.....sorry for the strange reply, don't know what happen with my reply to this thread.....
    Last edited by 99'HEARTBEAT; 12-09-2011 at 09:45 PM. Reason: 99"HEARTBEAT Error.

  4. #4

    Default

    Check out:
    GM TSB# 00-06-04-003B, #04-06-04-047B:#99-06-04-005B: #03-06-04-030A:#99-06-01-022:#00-06-04-003B:#04-06-04-051A:which seems to have affected all of GM trucks and SUVs 96-02.

  5. #5

    Default

    What do those numbers mean

  6. #6

    Default

    Those are all technical service bulletins issued by GM for issues I think are related to your symptoms. Just copy one and paste it in your search engine. You should be able to pull up the text of the bulletin.

  7. #7

    Default

    more than likely it is the fuel pump. It is the most common thing we see on gm trucks at my shop.

  8. #8
    Sr. Engineer
    Join Date
    Dec 2011
    Location
    11-22-boogie woogie avenue
    Posts
    308

    Default

    Would check pressure .. how about fuel filter when was it changed?

  9. #9

    Default

    Well the fuel pump was changed about a year ago and the fuel filter has never been changed that I know of

  10. #10
    Sr. Engineer
    Join Date
    Oct 2010
    Location
    Indianapolis, In
    Posts
    493

    Default

    Changed one recently that had been replaced recently and found that the internal fuel line was to long and was crushed/kinked when installed. This resulted in a very reduced fuel flow and would idle great and under part throtle work ok but when you gave full pedal and needed gas it would fall on it's face. It did not happen right away and owner never towed and was not an "aggressive" driver so it was not noticed for quite awhile and was discovered when his son borrowed the truck. Excact same symptoms as clogged fuel filter. Check pressures and go from there, much easier to change filter than pump and cheaper too and that is where I would start.
    2000 GMC YUKON SLT, 5.3L tow pkg, G80 rear/w 3.73 gear

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