Transfer Case loud bang/pop
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Transfer Case loud bang/pop
I have a 2013 Silverado w/ 5.3 AFM deleted, HP tuners ECM, TCM tuned. When placed into 4LO and then transmission is placed into drive or reverse there is a very loud pop/bang. Drives normally in 4LO no abnormal sounds..
When transfer case is in 4 HI or 2WD there is no pops, bangs, clunks when placed into drive or reverse. Nothing out of the ordinary, also drives normally.
Any ideas as to what is causing the pop/bang in 4LO when placed into reverse or drive?
When transfer case is in 4 HI or 2WD there is no pops, bangs, clunks when placed into drive or reverse. Nothing out of the ordinary, also drives normally.
Any ideas as to what is causing the pop/bang in 4LO when placed into reverse or drive?
Last edited by Mtrammell; Jan 18, 2026 at 4:57 PM.
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Mloreg4
Silverado, Sierra & Fullsize Pick-ups
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Jun 23, 2014 10:47 PM
