GM Truck Club
Founded in 2004 ~ We're the #1 Chevy Truck & SUV Forum.
Silverado & Sierra | Tahoe & Yukon | Suburban & Yukon XL | SUV & CROSSOVER
Results 1 to 4 of 4
  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


    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


    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


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

    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.

Similar Threads

  1. Who has a camper, and what kind of camper?
    By murdog94 in forum Sports & Outdoors
    Replies: 40
    Last: 10-25-2013, 06:25 AM
  2. Chevy Camper Tops / Toppers / Canopies / Camper Shells
    By ChevyFan in forum Chevy Truck Accessories
    Replies: 3
    Last: 10-11-2011, 12:07 AM
  3. engine sluggish
    By jdog468 in forum General Chevy & GM Tech Questions
    Replies: 9
    Last: 04-06-2010, 02:07 PM
  4. Sluggish 2008 Suburban 2500
    By Ron Inverso in forum General Chevy & GM Tech Questions
    Replies: 2
    Last: 08-26-2009, 07:29 PM
  5. sluggish website?
    By ChevyFan in forum Announcements & Feedback
    Replies: 4
    Last: 06-05-2007, 02:53 PM

Tags for this 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