Jump to content

Electronic clicking after shutting off truck

SuperDuper
 Share

Recommended Posts

SuperDuper Enthusiast

SuperDuper

Posted
Posted

I’m fairly certain it is supposed to do it, but in my 2019 Sierra when I shut off my truck and remain sitting in it for about 5 minutes or so I hear a bunch of electronic clicking and whirring coming from the dash, kind of underneath the steering column area. Just curious what it is making the noise or if anyone else has heard it and knows what it might be by chance. 

Schmoe Enthusiast

Schmoe

Posted
Posted (edited)

If y’all gave the HUD, it’s retracting, or the electronic parking brake is setting, most likely. 

Edited by Schmoe
Booger T Enthusiast

Booger T

Posted
Posted

Mine does it also, it is not the parking brake and I don't have HUD. Not sure what it is but I would say it is normal:)

Jremm15 Enthusiast

Jremm15

Posted
Posted

It is the new electronic braking system doing a system check.  It does this after the truck has been shut off.  I worked on it while it was in development.

  • Like 1
JR09country Enthusiast

JR09country

Posted
Posted
It is the new electronic braking system doing a system check.  It does this after the truck has been shut off.  I worked on it while it was in development.

The brakes are fantastic on the truck so good job to you and your team.

 

Sent from my ONEPLUS A6013 using Tapatalk

 

 

 

  • Like 2
AMPRG Enthusiast

AMPRG

Posted
Posted
On 7/6/2019 at 6:26 PM, Schmoe said:

If y’all gave the HUD, it’s retracting, or the electronic parking brake is setting, most likely. 

What do you mean "HUD's retracting"? I've never heard about that! 

HondaHawkGT Senior Enthusiast

HondaHawkGT

Posted
Posted (edited)

Relay clicking noises mostly. Also, since the truck doesn't have a normal keyed-ignition, the government mandated column lock uses a solenoid that activates after the truck is in park and engine is shut off. That's pretty audible. Another noise is the solenoid that keeps the shifter in park until the brake pedal is pressed. Apparently GM wasn't willing to isolate the relays and solenoids with noise insulation, so they're all pretty audible when the stereo is turned down or off. Maybe someone will peak under the dash and figure out where they are. Or maybe a tech can give us a diagram of where they're located. A DIY sound deadening mod to make them less audible would be nice.

Edited by HondaHawkGT
  • 1 year later...
John Bro Enthusiast

John Bro

Posted
Posted
On 7/6/2019 at 7:30 PM, Jremm15 said:

It is the new electronic braking system doing a system check.  It does this after the truck has been shut off.  I worked on it while it was in development.

Hello!!! I do have a question. I have a 2020 GMC Sierra. But....when I turn off the ignition and sit in the truck for several minutes, the brake pedal is hard when I try to start it up again - as if the vacuum is lost or something. Additionally, my "Trip" and "MPG" average are both 0.0 instead of actual mileage and MPG like I see at times when entering the cab fresh. Lastly, before finding itself, the warning of "Brake System Failure/ 62 MPH Top Speed" flashed very quickly by. I had my dealer search for a code but nothing there.

 

Thoughts? Why all this after sitting dormant in the cab like on my phone or something?

 

And the Brake Warning doesn't always happen. The 0.0 most always does though after waiting in the cab for too long before start.

 

Thoughts?

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing

  • Latest Articles

  • Posts

    • Atlas
      Wow I'm in a pickle. (Broke down truck) and a story.

      By Atlas · Posted

      The truck is a 1995 Chevrolet S10 Blazer, 4.3 VIN "W" engine. :cracks knuckles:   On a whim - because I needed a headache - this truck was for sale so I stopped to take a look. Doesn't run. Well, it does, but barely. Long crank, choppy idle, bad misfire(s), it REEKS of fuel. I can DO this..I'm thinking. Diamond in the rough. One owner until last year. A young guy is selling it, he bought it 6 months ago. It stranded him more than once, he's got a newborn. It was in the shop 10 days ago and he "thinks" they said it needs a new fuel injection system. He can't put any more money into it, needs it gone. I was thinking of upgrading my Macbook, which is a total want, not a need. For less than the price of a new laptop I can have fun for months. I'm taking this truck home.   Some parts, a wash, maybe a set of tires, and I can have a few months of fun and then turn it for beer money (or the next project).   Sure enough, there's a work order from a shop last week in the INCHES of paperwork on this truck dating back to when the first owner bought it. They put a new distributor in it, fuel injection work describes basically opening the plenum and putting it back together. He said he couldn't afford any more work so he had them button it up and that's when he put it up for sale.   I'm not well versed in 4.3. I did discover 1995 uses the 1992-1995 SCPI "Spider" injector which is riddled with issues from splitting lines, clogged or cracked poppet valves and plastic spider legs that crumble over time. Cool. I'll just order me a ne---. Oh, the auto parts store doesn't have it? Rock Auto doesn't have it. eBay? $$$$$$ for used. These are UNAVAILABLE period end of story unless you know "a guy" who's still got one in a box somewhere.   Can't upgrade to the '96-'04 injector, it's a different plenum, wiring/pinout and sensor config.   There are a few kinda "know a guy" -guy rebuild services for these injectors out there for about $350. Okay, Okay... I'd like to know if anyone has used them? Anyone got a lead on these crappy 92-95 spiders?   I also don't want to send MY spider to Narnia and back without knowing if that's truly the problem. I guess I'll need to pull apart the plenum and do some digging.   I was also thrown for a loop. This 1995 model year truck has an OBD-II connector. The interface is decidedly not OBD-II. I can read and reset trouble codes and view live data, but there's not a lot of data. Like misfire count and on what cylinder, that's not there. It's OBD-1.5.   Nothing is ever easy. Now it makes sense why this guy wanted to disappear this thing for cheap. I'm guessing the shop told him the injector is toast, the part is unobtainable and they're not going to sort sending the thing to a rebuild service, and the kid likely can't be without a working car for 3 weeks even if they'd facilitate that.   Experience with these early SCPI's? Stories? Things to check? Sympathy? (..Nah...)   This can sit until I sort it. But I haven't had a problem with a vehicle I couldn't easily solve in a long time.    
    • Grumpy Bear
      OCI, not when but why?

      By Grumpy Bear · Posted

      I have four that read by the dash 8 to 10% better than miles/pump calculations and I have one that is spot on. 
    • Grumpy Bear
      OCI, not when but why?

      By Grumpy Bear · Posted

      The average lifespan of automobiles on the road is increasing - here's why
    • 24trailboss
      2024 Sierra Vibration - Need advice

      By 24trailboss · Posted

      Typically it is the Torque Converter, I have a 2.7L Trail Boss and between 25-65 MPH at 1300-1500 rpms under light throttle it has a shudder which I almost consider and bobble or a gargle sound. They replaced my TC but it did not help any, others say it has fixed their issues. It has been back twice now with no fix after.
    • txab
      Gas Prices

      By txab · Posted

      Still $3.01 with even more places at this price

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...