If both front speakers are not working, then either the fade control is set to rear speakers only, or the front speaker plug has fallen out - very unlikely. Check the fade control, first.
Or, I suppose a particularly loud blast of music could blow both speakers at once . . .
The ABS computer has detected a fault and is informing you that it's not working properly.
fuse link
The most common cause of that is a bad EGR Valve.
Blown speakers, bad wiring or radio problems.
The speedometer and tachometer on a 2011 Chevy Silverado can stop working due to issues such as a faulty vehicle speed sensor (VSS), a malfunctioning instrument cluster, or problems with the wiring and connections. Additionally, a blown fuse or issues with the engine control module (ECM) can also disrupt their functionality. Regular diagnostics can help identify the specific cause of the failure.
Oil leak and overheating?
It might be that you did not tighten the gas cap enough.
yes, also no fuel pump and maybe a blown fuse.
not enough freon or too much
Owners of Chevy Silverado's choose to lower their trucks for aesthetic reasons. There are no real performance advantages to a lowered truck, and in fact, if a truck is lowered too much, it can cause problems when driving over uneven terrain.
if you have messed up the stiring wheel
Nothing last forever. Replace water pump it's worn out.