Silverado - Noise at cold start

[dishdude]

Originally Posted By: horse123
Sounds like an engine lol.


I gotta agree, I don't hear anything to be alarmed about. I suspect it's the injectors you're hearing...but it sounds like every engine I've started when it's in the single digits outside. I fixed that problem by moving to Arizona.

 

[Warstud]

My truck did the same thing this morning and when I left work today. It was around 0 degrees both times. I believe it's the belt making a screetching sound for a second... due to the cold.

 

[hattaresguy]

It sounded like the starter bendix was slow to disengage. Not a big deal its cold, things move slow. My trucks power steering pump makes a bit of noise when it gets below 10 for the first few minutes.

FYI to those that don't work outside for a living most equipment likes starting about as much as the average person likes getting out of bed on a 0 degree day. Expect lots of smoke and noises, trucks are no different.

 

[NYEngineer]

Originally Posted By: oilpsi2high
Have someone disable the AFM before it ruins your top end.


THIS^^

 

[dailydriver]

Originally Posted By: NYEngineer
Originally Posted By: oilpsi2high
Have someone disable the AFM before it ruins your top end.


THIS^^


I'd bet this is the very FIRST thing most new C7 owners have done at tuning shops.
I just could not imagine having a new C7 Z06 with this system on it.

 

[dishdude]

Originally Posted By: dailydriver
Originally Posted By: NYEngineer
Originally Posted By: oilpsi2high
Have someone disable the AFM before it ruins your top end.


THIS^^


I'd bet this is the very FIRST thing most new C7 owners have done at tuning shops.
I just could not imagine having a new C7 Z06 with this system on it.

What's this do to the warranty? I am guessing it involves modifying the firmware in the ECM?