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#gmc #help #obsbuild 1500 1992 1995 1998 2003 2005 2006 350 4.8l 454 4l60e 4l80e 4wd 4x4 5.3 5.3l 5.3silverado 5.7 5.7 tbi 5.7 vortec 5.7vortec a/c alternator avalanche battery c10 c1500 catalytic converter chevrolet chevrolet silverado chevy chevy c/k chevy c/k1500 chevy c/k2500 chevy help crank no start differential duramax electrical electrical issue engine engine swap exhaust fuel fuel pump gmc gmc sierra gmt400 headlight headlights heater help interior k1500 lift lift kit lifted low oil pressure lq4 ls swap misfire need help noise obs chevy overheating p0300 quadrasteer radiator radio rough idle seats shocks sierra sierra 1500 silverado silverado 1500 silverado 2500 hd silverado1500 suburban suspension swap tahoe tbi tires trail boss transfer case transfer case shift motor transmission transmission issue truck vortec wheels wiring wiring isues yukon yukon xl z71
  1. General Chevy & GM Tech Questions
    Hey all. I have a 2009 GMC Sierra 1500 (LMG engine, 4L60E trans) with about 175k miles. The past couple times I’ve started it, it seems to idle just fine, but when I put it into gear (no matter if it’s drive or reverse) the RPMs drop significantly, almost to the point of stalling, but they...
    gmc rpms sierra sierra 1500 stall
  2. Chevy C/K Truck Forum
    There is something strange with my truck... I have changed out the TBI and replaced the gaskets on it. Replaced the TPS and the IAC... Drives better. When the weather was VERY HOT about a week ago, it would almost die when the RPMs would drop. That was before I changed the those two components...
    idle speed rpms
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