First post. - I am about 90% sure I'm picking up a '07 Sierra 1500 LTZ, 5.3L, Ext Cab, 4x4, Z71 with 35K miles. Is there anything in particular I need to look out for before purchasing? I worked on these trucks at a GM dealer close to 10 yrs ago, but this is one of the Newer Body Styles with coil spring fronts. Any advice would be greatly appreciated.


Welcome to the site! I'm sure some of the NBS folks will chip in, but I'd like to have one myself so I don't know much about the new ones. Good luck!
2010 Z/71 Colorado C/C
Black 4X4 w/5.3L V8
===============
2007 Winnebago Adventurer
w/8.1L Chevy & Allison 6spd.
Canyon Lake, Texas
I bought an 08 not long ago, had 5300 miles on it. Check the undercarriage for rust. I'm not sure how much is "normal," but on mine it seems pretty rusty. Control arms on the front wheels and spots along the frame where the black rubber paint stuff (lame rust inhibitor I guess) is coming off.

Welcome to the site!!!!!!!!!
You should be 100% sure since it's a GM.
BRYAN
"IF YOU DON'T TREAT IT LIKE A TRUCK IT'S JUST A REALLY BIG CAR"
02' Avalanche 2500 Onyx Black
8.1L Vortec
43,000 miles
I have had my 08 for just over a year now. No problems other than passenger lock failing. I guess a known problem with the NBS with the electric locks according to the tech a the dealer.
2008 Silverado 1500 Ext Cab 4wd LT1 Package with 20" wheel upgrade,K&N CAI, Magnaflow Catback Dual Side Exit, Tuff Country 2" Leveling Kit, Blackbear Tune, 6k HIDS Low and High Beams, 3K HID fog lights, LED tailight bar


Welcome to the site....x2 on the undercarriage rust...I have an 08 that I bought brand new last year and have noticed some rust.
Bobby - North Carolina
2008 4x4 5.3L V8
6" Suspension Lift and 1.5" Body Lift
20x9 Ballistic Jesters w/35" Toyo Open Country MT's
4:56 Yukon Gears
Hypertech Speedometer Calibrator
Baja style bed mount spare tire carrier
Flowmaster 40 series dual exhaust
Recon Smoked LED tails and 3rd brake lights
N-Fab Nerf Steps
K&N CAI
No Fear Pedals
Tint, Line-X bedliner, Window visors, Rear wheel well liners
Painted front grill, bow ties and door badges, de-"lettered" tailgate
Powder coated front and rear bumpers

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Hi, and welcome to the site.
Eddie , 2000 Chevy Tahoe Z71 (old style)
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