wz71

Hey guys new to the forum and looking for some help. After I shut off my truck I hear a noise coming from the center of the dash that sounds like a hard drive or small motor of some kind running for maybe 30 seconds or so. Sometimes I notice it when the truck is sitting still and engine running. Can't pin down exactly when or what is doing it and wondering if any of you have an idea.
Thanks,

kenny-1907

My silverado makes the same noise and i think it may be the cd player. when yours makes this noise , is there a cd in the player even if it is on radio. I usually have a cd in the player all the time even when i am only listening to the radio, i will have to take out the disk and see if it still makes the sae noise.

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¤ 2000 Silverado Ls Ec Sb 4.8
¤ Dual exhaust with flo pro mufflers with 4" stainless Magnaflow tips
¤ 255/85/16 BFG MT'S
¤ K&N FIPK GEN II
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wz71

No I didn't have a CD in..Thought about that earlier. Sounds like it is behind the radio in that general area...don't know what else would be back there. Sounds like some kind of little motor.

Silverado Brethern

Sure it's not the fuel pump? cuz mine will run for about 5-10 seconds after i shut it off. I have heard of alternators going bad and making a surging sound on shut off....doubtful for that but also remember not every sound is bad.

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"Never under estimate the power of stupid people in large groups."

1997 K-1500 Silverado Vortec 350...125,610 and wounded
HD chassis package
Custom TRUE DUAL exhaust with cut-outs and Flowmaster 40 series mufflers
Poweraid Throttle Body Spacer
Custom Ram-air Intake with K&N FIPK GEN II
TFES Performance 3" Suspension Lift
Dual Air-Horn Kit with Compressor
Bed-Mounted 48" Hi-Lift Jack
Cobra Laser Radar Detector
285/75/R16 Cooper Discoverer STT's

1/4 Mile 10/15/05: 16.43 @ 91mph

bowtieguy

it is the cd player mine does it too. why, i dont know but i havent noticed any ill effects though. it dont make that noise very long though either.

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2002 Z71 ext. cab LT trim
badgeless
Rhino spray in liner
Stock for now, other than free mods
future plans (how far in the future depends on wallet)
Toyo Open Country M/T's
air intake (not sure which yet)
exhaust system (seems that Magna flow is the ticket)
Nelson tune
3 or 4 inch lift

jethro_3

I was told it is a fan on the back of the radio due to the heat and confined space.

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wz71

That might be it...kinda sounds like a fan running right behind the radio!!!!Didn't know there was a fan back there.

bowtieguy

fan makes sense......first i have heard that bet it does get hot under there though.

__________________
2002 Z71 ext. cab LT trim
badgeless
Rhino spray in liner
Stock for now, other than free mods
future plans (how far in the future depends on wallet)
Toyo Open Country M/T's
air intake (not sure which yet)
exhaust system (seems that Magna flow is the ticket)
Nelson tune
3 or 4 inch lift

Rbo

That is right....There is a fan attatched to the back of the radio. It is in plain sight if you have the radio out