Bypassing SCV?

cwilks8

Member
Joined
Jul 21, 2025
Messages
5
Reaction score
9
Location
Canada Ontario
Hi everyone I put in a 85-02 radio with the acc knob outside of the volume in my 01 1500 and when I turn the truck on the volume goes everywhere when I adjust it and to fix it I have to turn the fan on and off and turn the SCV up and down for volume to adjust normally. But NOW when it’s “working” there is a buzz coming from it and when I press the gas it gets louder and when I go faster it’s louder so I’m pretty sure it’s the scv. Was looking for a fox or how to bypass it by grounding off the wire or something but diagrams have not helped. Any help is appreciated
 

ORVietVet

Supporting Member
Military
Joined
Dec 31, 2023
Messages
2,151
Reaction score
3,844
Location
Oregon
Welcome to the forum from Oregon.

Hopefully a knowledgeable member will chime in with info. If a stereo system is not plug and play, I am lost. BUT, it does sound like a ground problem based off of what I have read before.

Please post some pics of your truck.
 
Last edited:

Tonimus

Staff member
Moderator
Member Relations Specialist
Supporting Member
Joined
Jul 2, 2025
Messages
130
Reaction score
361
Location
Phoenix, Arizona
Pin 16 should be a dark green with white stripe. That is your vehicle speed sense wire. You can try pulling that pin. I wouldn't ground it out, just tape it off. See if that helps.
 

AuroraGirl

Well-Known Member
Joined
Dec 24, 2023
Messages
242
Reaction score
584
Location
Wisconsin
It’s most likely electronic noise not speed variable volume
85 -02 radios only match in the size they open. 85 radios are different. What year truck is this and what exact head unit is this
 

Latest posts

Members online

Top