Jump to content

exhaust adaptive valve frozen shut. Truck wouldnt start!!!

Boombastic

By Boombastic
in Troubleshooting & Recalls

Recommended Posts

TJay74 Senior Enthusiast

TJay74

Posted
Posted

A failure to start would not be a safety issue, safety issue would be something that can cause an issue once moving. This would be a TSB, plus a very difficult TSB since you cant remove the valve without cutting it out and I doubt GM will want to do that. I could see them making a new exhaust setup from the cat back though.

pm26 Senior Enthusiast

pm26

Posted
Posted

Maybe GM will provide a small butane torch with each new truck with instructions how to heat the valve to unfreeze it.

sicsixxx Enthusiast

sicsixxx

Posted
Posted

Hmmmm...

 

Well that would have been handy and should be an automatic option for northern folks.

 

 

To the other's who feel this is not a safety issue. I frequent northern lakes with no cell and no onstar coverage. If my truck doest start in severe temps im a gonner. I can potentially freeze to death. A no start issue with a solution I dont know about can be severely detrimental in severe climates. But I guess im the minority so it doesnt count.

 

Nonetheless always be prepared when you travel.

MotoMedic Senior Enthusiast

MotoMedic

Posted
Posted

Well that would have been handy and should be an automatic option for northern folks.

Yeah, I'm kind of disappointed no one fell for my prank. Dang informed truck owners and their forum! haha

Bbowen826 Enthusiast

Bbowen826

Posted
Posted

Truck started this morning then quit. It was -22C. I then crawled under truck to see if I could manually turn the " flapper valve" and I couldn't. I then tried to start the truck and it still wouldn't go. I then crawled under again and lightly tapped the exhaust where the valve was located and "BAM" the truck was running. My dealer is sharing this info with the GM.

Did you see GM just did a recall for exhaust problems leading to fires. Says it mostly common in colder climates. It didn't say if it is related to the valve but it might be worth looking into.

http://www.gm-trucks.com/forums/topic/156822-recall-fire-risk/

1kwik72 Enthusiast

1kwik72

Posted
Posted

Did you see GM just did a recall for exhaust problems leading to fires. Says it mostly common in colder climates. It didn't say if it is related to the valve but it might be worth looking into.

http://www.gm-trucks.com/forums/topic/156822-recall-fire-risk/

Did you read the article? It is a software update nowhere that I have seen does it say it is a problem with the exhaust. People are just speculating it could be related.

Bbowen826 Enthusiast

Bbowen826

Posted
Posted

I said the recall didn't say if it was related to the valve. Just trying to offer some help and let others know about the recall.

1kwik72 Enthusiast

1kwik72

Posted
Posted

I said the recall didn't say if it was related to the valve. Just trying to offer some help and let others know about the recall.

I didn't see where they said anything to do with the exhaust at all. Just a potential fire risk and a software update. That was my only reason for asking

Bbowen826 Enthusiast

Bbowen826

Posted
Posted

I didn't see where they said anything to do with the exhaust at all. Just a potential fire risk and a software update. That was my only reason for asking

It says it's a software issue that is causing the exhaust to overheat leading to fires. I didn't know if this valve is connected to the computers on these trucks or if they are still manual like in the old days.

1kwik72 Enthusiast

1kwik72

Posted
Posted

It says it's a software issue that is causing the exhaust to overheat leading to fires. I didn't know if this valve is connected to the computers on these trucks or if they are still manual like in the old days.

I stand corrected then, I didn't see the part about the exhaust overheating. Of course there have been several links to various media reports about this and each one is a little different. Until I see the actual campaign on GMesi I will try not to speculate what the cause is.

jdg24 Enthusiast

jdg24

Posted
Posted

I believe there is a member who has an exhaust shop weld his open. I dont think he has had any problems thus far.

That was me, I had them weld it open. We've had some single digit temps and sub zero wind-chills and my truck sat for over 24 hours without starting it. Started right up with the remote. I've had no problems at all.

GMCustomerService Senior Enthusiast

GMCustomerService

Posted
Posted

Truck started this morning then quit. It was -22C. I then crawled under truck to see if I could manually turn the " flapper valve" and I couldn't. I then tried to start the truck and it still wouldn't go. I then crawled under again and lightly tapped the exhaust where the valve was located and "BAM" the truck was running. My dealer is sharing this info with the GM.

 

Hey Boombastic,

 

I would be happy to document this in our system and look into this matter further. In order for me to do so, would you please reach out via PM with your name, address, phone number, VIN, current mileage, and involved dealership?

 

I look forward to your reply,

 

Jonathan A.

GM Customer Care

Archived

This topic is now archived and is closed to further replies.

Go to topic listing

  • Latest Articles

  • Posts

    • Chuck FB
      2024 Silverado 2500 HD with the 6.6 Gas (L8T) Engine

      By Chuck FB · Posted

      How many miles were on the truck when you bought it and was there some form of oil change history generated through a dealer or an independent shop although not much would show up if the owner had changed their own oil. Just curious if it was a maintenance issue or if there was something off from the start, surely one would think the original owner would have realized it was using a lot of oil, its hard to go back in time and find out the true story of mysteries like this. Well hopefully the warranty company will go for it and just install a new engine, that would be the ideal outcome.    I still have so few miles on my truck as per not quite 9000 and will be changing the oil shortly which has around 2700 miles on it or so and its down so little on the dipstick from where it was at the beginning of this oil change that I could make the "claim" that it uses no oil but in reality would be a very small amount, less than a 1/16 of an inch. Just driving empty/not towing and easy driving so hard to say what it would do if it had a load behind it for oil consumption. So far very impressed with the very minimal oil usage. 
    • BIGBOYS
      Doors lock and mirrors fold in while driving

      By BIGBOYS · Posted

      I have a 2015 Silverado and sometimes I can not get in to the truck. I use the key to unlock the driver door. Something is locking the truck when I unlock it, last night I left the truck open and this morning it was locked with the mirrors folded in. This happens while driving so it is now a safety issue. I reach down for the folding button and they open, then they close again.  Any advice, thank you,   Ed
    • Paul8556
      Headlight issue...

      By Paul8556 · Posted

      Did you ever find a resolution to this? my 2019 Silverado 1500 is showing the exact same headlights issues with the exact same symptoms.  would help a ton if anyone has any advice on this or better yet a known solution..
    • RyanbabZ71
      Gas Prices

      By RyanbabZ71 · Posted

      Wawa and Meijer here have ethanol free (88 & 89) I use for my mower and lawn equipment.  Its not much more than reg.  I paid $3.29 a few weeks ago.  
    • Atlas
      Wow I'm in a pickle. (Broke down truck) and a story.

      By Atlas · Posted

      tl; dr I've now reached the 6th floor of hell. I'm chronicling my journey for my morning readers.   Pulling the top of the intake apart was moderately easy but it involved a lot of parts, connections, and minutae. I was preparing for the new fuel lines to arrive ("nut and bolt kit" it's called). The fuel line connections are notched and held in place by the manifold and a metal plate with a T27 screw.   It's on the back of the intake, under the firewall, with little clearance, and two hard metal fuel lines in the way. I was using Franken-tools (weird combinations of 1/4 inch ratchet with/without an extension, with a bit holder for my T27) to get in there. One of my sockets and bits fell off and has yet to emerge on the floor. I lost a second setup and that's when I almost started throwing tools. But that was the point at which I had gotten traction on the Torx head, and it promptly stripped. No more traction.   I started humming "1-877-kars-4-kids" because I was about at that point. You know what? I'm $1500 into this thing and I can make it disappear just as quickly. This isn't fun anymore. I had spent a lot of time already "tidying" around the engine bay: Fixing all the "someone's been here before!" BS. The truck has been exclusively dealer- and shop- serviced and I'm reminded of why I never let other people work on my cars unless absolutely necessary.   Speaking of dealer service. This truck has a 1" stack of records going back to 1995. I put them all in an excel spreadsheet, date/mileage/description.   The CPI spider has been replaced 4 times in 85k miles. The EGR? Another 4. Multiple, multiple O2 sensors. One Cat. 4? Sets of plugs and wires, and I swear half the stack is diagnosis paperwork for "misfire, runs rough, extended crank, dies at stoplights".   GM was producing some proper crap back then. And it was still well within the era of brittle/crappy plastic. (Windows 95 was released the same month this truck was sold new, we HAD the technology!!)   There (was) a plastic shroud around the evaporator core and HVAC fan in the engine bay. I noticed a chunk of it missing so I poked at it some more and it literally shattered. Touched it some more and pieces were crumbling off. Had a good laugh. Clearly whatever plastic garbage they were using had broken down over 30 years and was literally turning to dust. That was a good half hour of using a shop vac to remove the rest of it.   Back to it.   I was going to give up for the evening but then decided I'm already level 10 pissed off at the stripped screw: G* D* it, give me my tools back -- and my JOY. We'll do this the hard way: The whole intake is coming off.   Blazer won Round II. After finally finding and accessing the 12 intake bolts and using a pry bar to unseat it from the heads, it popped loose in an explosion of gunk and grime raining down into open ports. Awesome.   6 times I reminded myself: Be careful of the temperature sender on the front of the intake.   YEAH, I forgot again and snapped it clean off in the removal. Add another $20 to the ever-growing list of new parts this thing is consuming.   The shame is, long before removing the intake, I had changed the oil in prep for Tuesday's momentous fuel line replacement that was going to be the magic fix and I'd have a running Blazer to tool around in this next weekend. The intake removal, including raining gunk, also gushed dirty coolant all over the valley. Of course it did. Welp, there goes another $35.   I now need an intake gasket set, bolt set, coolant temp sensor, another 5 quarts of oil, some RTV. Don't worry, I've already got 3 new jugs of Dexcool and a thermostat waiting. I'll fill it with clean water first to get it running, dump it, and then add the Dex later on in case... well, let's not go there. I'm only tearing this down once, next time the truck is going on Marketplace for FREE.   Oh, and I'm going to need vacuum hose for all the stupid connections placed at the rear of the engine which have since disintegrated. Come on, GM....tell me you don't do that anymore?   Oh, and the ears on the distributor where the cap screws down are both cracked. I mean, why not put a new distributor in it too. You get a distributor, YOU get a distributor, Everyone gets a new distributor!   This truck isn't out of the woods yet...I'm already questioning how much more time I'm willing to sink in.

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...