Brakin7

Truck drove fine even with new CV axle, but loaded. Unloaded i can feel it bounce my gut at those speeds. Doesnt come thru steering column. Just in my back and butt.

Sorry, id understood that 4lo is for crawling and slow action, hi is for hiway use. Maybe I read wrong...

My truck doesn't let you select 4wd without prompting you to go into neutral on the screen. Yes, I meant to post here because of my shake at ~40-50mph. Put it in 4lo to crawl out of a mudhole in the driveway. Thanks for the info!

Obligatory Show-off Post

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First post here. Been lurking for a week or B, you guys kick ass. 2k15 Silverado 1500 LT with Rough Country 6" Lift, Skid Plate and Fender Flares, NFab nerf bars, 35" Nittos on 20" Grid rims All done by a third party for the dealership. Bought it with ~16500 miles on it, has 19500 on it now. First issue was about a month ago, came up to a mudpatch in the driveway, okay no biggie. Lock in 4lo and crawl, right? Nope. 4wd didn't engage until after I had to get yanked out, as evidenced by the front wheels not turning... okay... check off-road menu, 4wd is not engaged, wtf? Finally get out of hole, go forward now with 2wd, still, "POP", and whole truck lurches forward. Towed to dealership for front end crack and pop, damn CV shaft broke... unbelievable. Okay, repaired under warranty... give me back truck with crooked steering wheel. Ugh, alignment? 59$ because it is not part of GM's procedure.... Now, maybe a week ago, I finally taken some tools out, which I have carried since I bought it, maybe 250lb... and the truck drives like pure dogdoo, hoppy at 40-50mph... makes my water bottle look like the speaker is hitting it, and makes me nauseous. Tires all at 30psi... appointment Friday to drop it off. No way 45k truck should get me seasick at town speeds...