They learned that the oil level sensor was necessary and that we were supposed to have been advised that we needed to reuse the original oil pan. module (ECM) will command the cylinder deactivation system ON to deactivate engine cylinders1, 7, 6, and 4, switching to a V4mode. No other truck my ass .lol my 99 silverado 1500 with the junk LR4 4.8l and 320k miles 9n itgets 21mpg all day long with 93 octane gas in it. IMHO . 1. The engine will normally operate on 8 cylinders in V8 mode during starting, idling, and medium or . Would installing the Disabler solve this? I bought a 2022 GMC Sierra 1500 with 5.3L, X31 off road package a year ago. Chevy 5.3 Engine Problems Are They That Long-Lasting? - Motor Verso Remembered that after I bought my Tahoe. PDF GM LS AFM Deactivation Lifter Issues - Melling I have an 2004 1500 Suburban 4WD that I am about to replace the motor in. You also need the disabler installed in your obd connector. Engine oil pressure is fine. Would never take it on a long trip. A bad lifter can be a minor repair if you get it fixed immediately after you hear an issue. Do not pay that amount. All these comments on the 5.3 are blowing my mind!!!. I quites down to nothing after running for about a minute. If you want to delete it entirely, its a M14 x 1.5 pipe plug or you could use the Improved Racing plug p/n IRP-814-M14-Kit. I wii be using this truck to haul a camper for full time RV living and am thinking of a tuner to shut off AFM and maximize performance and economy. It had the AFM wiring & lifter cover installed with solenoid pack in the original engine, we even removed it to inspect. I have 4 GMCs in my driveway right now only one with AFM its always popping DTCs, 06 Yukon (not AFM)never had a light in 12 years! He claims that GM used the same engine whether it was or was not equipped with AFM in this year and model? I did a delete on an 07 avalanche and no have no power, any thoughts on what might be going on? I have read synthetic isnt good for AFM lifters. I went ahead and purchased a Disabler on Amazon, for preventing it happening in the future. Why would GM ever produce such problems with such little to gain. It also mentions a valve cover replacement with revised PCV valve design. I traded in a 2004 4.8 L with 256000KM on it that ran like a clock and never gave me a problem. Did Obama make them do this? There may be an ignition related issue on that cylinder. [] For more information on AFM, including a comprehensive guide on how to completely remove it from your engine, check out this article. GM Dynamic Fuel Management Cylinder Deactivation Technology - GM Authority I own a reputable repair shop. Im confused from the write up about the plug in. misfire or anything. Given maximum engine power is not required during the majority of everyday driving, AFM works to deactivate engine cylinders when they are not needed, such as when cruising on the highway, thus.
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