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  1. #1

    Default new camper, sluggish suburban, help

    Just brought home a 5000 lb camper. Burb is under powered! The factory 2500 stall converter keeps engine at around 3000 rpm driving Just doesn't seem to have the power. Traded my 1/2 ton burb with the 5.3l for this. I know my 1/2 ton would smoke this 3/4 ton. Bought burb with 33" tires. Causes gear ratio to increase from 3.73 to 3.42. Not helping things either.
    Anyone with a similar problem?
    2003 Suburban 2500 LT, 6.0l Volant cai. 3.73 gear. Mobil 1 syn oil

  2. #2

    Default

    I know this sounds crazy but try removing the gas cap. I had a similar issue where I started losing power, especially pulling my boat. Turns out the fuel tank was not venting. Ran great after that. I'm still trouble shooting why the venting issue, though. A brand new gas cap did not help.

  3. #3

    Default

    I will have to check that out. I am a forklift mechanic (among other things) and that could be a problem. Would cause a greater vacuum on the fuel system limiting the volume of fuel getting to the engine. I'm having a coworker stop by some time with an expensive hand held to check codes and other things.

  4. #4

    Default

    Let us know if thats the problem. First time I've heard of that one, but anythings possible.
    :cool:

    2005 Chevy Silverado Z71 Crew Cab
    6" Skyjacker lift w/Edlebrock dual front remote resoviour shocks, single rear remote. Rancho skid-plate.
    17" x 9" M/T Classic Lock Wheels, 35" BFG A/T or M/T tires
    4.10 PercisionGears w/factory locker, T/A Performance rear-end cover
    Banks CAI intake, ported throttlebody, JBA coated headers, over-sized Magnaflow cats, Magnaflow cat back exhaust, Diablo tuned
    B&M aluminum deep transmission pan
    Warn brush guard w/Warn 9.5 XP winch, PIAA bulbs, Line-X bedliner, AWS Black tool chest, Extang tonneau cover
    Weather Tech floor mats
    Cover-Craft seat covers
    Dash mat cover
    Formula One window tint
    One black Lab in rear seat.
    :glasses:

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