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  1. The Garage
    2011 suburban 1500 4wd LT with 5.3LS motor. Ordered the summit racing DOD/AFM delete kit and had it installed at a race mod shop. Tuned on E85 and done around 117k miles. Currently at 130k. Zero problems since delete and tune were done. Today I got on the highway, 50-60 mph the CEL started...
  2. General GM Discussions
    Hello, recently my 2007 GMC Sierra 1500 5.3L NNBS has developed an issue While driving at relatively low speeds there is a distinct pop sound when switching out of V8 and into V4 mode. it is intermittent and only seems to happen while traveling under 30 MPH. I have been doing research...
1-2 of 2 Results