Buzzzing noise - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**1970 CST Short Wide** · 11-14-2003, 11:33 AM

I get this buzzing noise from a connection on the firewall. It looks like a small juntion with 2 connections and if you wiggle one of the connections it stops. I'll try to get a pic of the connection later.

Any Idea's what this could be?? Its on the firewall next to the master cyl.

Thanks
Steve

jef5150 · 11-14-2003, 11:54 AM

isnt that where your fuse box come into engine compartment?????

**CPNE** · 11-14-2003, 01:20 PM

It may be part of the emmission control installed on some of these trucks. If so, the wires should lead to your tranny as well as to a solenoid by the carb (if still present). Not sure why the buzz, if it's not working, disconnect it.

**Gary 70 Jimmy** · 11-14-2003, 08:01 PM

Did the truck have a speed indicator at one time if someone left
the buzzer under the dash the wire the hooks to cluster will just
be hanging there and can short out on anything matal and make the buzzer go off.This happen to me.

**CPNE** · 11-14-2003, 08:16 PM

Quote:

Originally posted by Gary 70 Jimmy
Did the truck have a speed indicator at one time if someone left
the buzzer under the dash the wire the hooks to cluster will just
be hanging there and can short out on anything matal and make the buzzer go off.This happen to me.

Good point. I had assumed because of the reference to the master cylinder that he was referring to engine side of the firewall.

Hooter · 11-14-2003, 11:45 PM

hmm second battery solenoid perhaps, i dunno I bet you you it is, or was , for the TCS system, or transmission controlled spark system, unhook it and see if anything doesnt work, thats all I can suggest for now

11-14-2003, 11:33 AM	#1
1970 CST Short Wide Senior Moment Join Date: Mar 2002 Location: Pittsburg Ca Posts: 4,165	Buzzzing noise I get this buzzing noise from a connection on the firewall. It looks like a small juntion with 2 connections and if you wiggle one of the connections it stops. I'll try to get a pic of the connection later. Any Idea's what this could be?? Its on the firewall next to the master cyl. Thanks Steve __________________ 1970 CST LS 1 6 speed Ford 9 inch Detroit Tru Track, Dakota Didgital, Vintage Air, QA1 Coil Overs Front & Rear Lots of FUN 2013 GMC PU, Oldest Son 71 GMC LWB. QA1 Suspension, Angry SB. Youngest Son 2019 GMC Diesil Dually. Youngest Son 2017 Toyota SUV Daughters car 2018 Traverse , Wife’s Ride Pittsburg Ca 94565

11-14-2003, 01:20 PM	#3
CPNE Resident Curmudgeon Join Date: Dec 1999 Location: NH Posts: 6,664	It may be part of the emmission control installed on some of these trucks. If so, the wires should lead to your tranny as well as to a solenoid by the carb (if still present). Not sure why the buzz, if it's not working, disconnect it. __________________ Currently on or near the homestead: 67 Chevy SWB 2WD stepside 350/3 on tree (Pat's) 67 GMC SWB 2WD Fleet 402/auto (Brian's under construction) 67 Chevy 3/4 ton 2WD 402/auto (Business Hauler) 67 Chevy 1 ton dually 2WD 396/4 speed (Former business hauler, Needs TLC) 68 Chevy 1/2 ton Suburban 2WD 250 six/3 on tree (Brian's Needs TLC) 70 Chevy 3/4 ton 4WD 350/4 speed (Pat's - Disguised as a 68 GMC) 71 Chevy SWB stepside (Crushed by tree - parts donor) 72 Chevy 3/4 ton 4WD (Parts donor) 72 Chevy 3/4 ton 4WD Suburban (Parts Donor) 72 GMC 3/4 ton 4WD 292 six/4 speed (Mine - Disguised as a 67 GMC) 81 GMC 4WD Dually Dump Body 350/4 speed (Business Hauler) 82 Camaro Z/28 355/Super T-10 (Pat's toy) 93 Caprice 9C1 (Brian's Cop Car) 02 Toyota Camry (Reliable but a souless steel and plastic hulk) 2011 2SS RS Camaro M6 Factory Hurst Shifter Maybe I need to sell some of this crap Yet another Bozo with a sawz-all

11-14-2003, 11:45 PM	#6
Hooter My other Love Join Date: Aug 2001 Location: Castlegar B.C. Canada Posts: 4,085	hmm second battery solenoid perhaps, i dunno I bet you you it is, or was , for the TCS system, or transmission controlled spark system, unhook it and see if anything doesnt work, thats all I can suggest for now __________________ Castlegar B.C.The great white North (Canada Eh!) Hooter_5@hotmail.com First generation Monte Carlo club pictures of my life

11-14-2003, 11:54 AM	#2
jef5150 Inline 69 Join Date: Apr 2003 Location: valleysprings,california Posts: 1,018	isnt that where your fuse box come into engine compartment?????

11-14-2003, 08:01 PM	#4
Gary 70 Jimmy Senior Member Join Date: Jan 2002 Location: Burghill, Ohio 44404 Posts: 3,402	Did the truck have a speed indicator at one time if someone left the buzzer under the dash the wire the hooks to cluster will just be hanging there and can short out on anything matal and make the buzzer go off.This happen to me.



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