Name That Mystery Rattle! - The 1947 - Present Chevrolet & GMC Truck Message Board Network

bry593 · 03-23-2021, 02:06 PM

1971 C20 with A/C.

I have a rattle, sounds like something is just hanging by a screw and banging against the firewall. This is inside the cab and sounds like it is behind the glove box and just forward of the A-pillar.

Anyone know what this rattle could be?

I've put my hand on things while driving and it does not mute the rattle. I also opened the glove box and held the door stop. No change.

Could this be an HVAC door or something? Maybe it is outside under the cowl? Sure sounds like it in the cab though...

Any advice or pointers is appreciated! Thanks!

03-23-2021, 02:06 PM	#1
bry593 Registered User Join Date: May 2016 Location: Oklahoma Posts: 201	Name That Mystery Rattle! 1971 C20 with A/C. I have a rattle, sounds like something is just hanging by a screw and banging against the firewall. This is inside the cab and sounds like it is behind the glove box and just forward of the A-pillar. Anyone know what this rattle could be? I've put my hand on things while driving and it does not mute the rattle. I also opened the glove box and held the door stop. No change. Could this be an HVAC door or something? Maybe it is outside under the cowl? Sure sounds like it in the cab though... Any advice or pointers is appreciated! Thanks! __________________ 1971 C20 Custom Deluxe, HT383, 4L80E, 3.73 Locker, 4 Wheel Discs

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