Hello everyone im a new owner of my first truck a 2006 silverado ext. cab z71 1500 5.3 with 116,000 miles one it 4x4. and also new to the forums I have driven to from york pa to st. louis missouri 2 times now no problems i love the truck. although there are a few things i have questions about maybe some more expert folks can answer for me.
1. I have a swooshing air noise every time i take off from a stop just gently though and its the same when i turn the wheel like parking lot speed (5 mph or so). I dont know what it is looking to fix it if its not normal.
2. sometimes when im going over 40 and approaching an intersection where i have to come to a complete stop once (not slamming on my brakes) gradually stopping i get a stumble right before i come to a complete stop. wondering if this issue is related to the 1st issue.

Maintanence recently done to the truck is
1. All new AC DELCO plugs platinum, and wires
2. Transmission flush
3. transfer case fluid changed
4. both differential fluids changed
5. coolant flushed
6. oil changed full synthetic
7. and took it to the dealer for them to clean the throttle body.

I hope that info helps as im moving to missouri sunday and was hoping to fix these issues before, thanks everyone for your help

 

oh i forgot the dealer had installed a magnaflow catback exhuast not sure what series but its a dual pipe other than that its all stock

 

......UP......

 

Welcome to the forum
Do you have a Cold Air Intake added to the truck? this can change the sound you where when taking off... the stock intake is also a cold air intake but has extra chambers added to muffle that intake of air sound....

 

Thanks
And no the truck is completly stock except for the exhuast and the tires. Stock airbox with the huge silencer that hangs from it

 

noone really can help? ANYONE?

 

Its kind of hard to diagnose a sound over the internet, as everyone's interpretation is different by the description... can you post a video of the sound?

 

The sound before you come to a complete stop, does it sound like a clunk? Almost like gettin hit from behind?

 

No not at all there is no noise anywhere near that. I dont here a noise when i come to a stop either at all, just hear air when i take off from a stop and turn at a stand still