2020 Silverado gas gauge and check engine light issue

[Andrew F]

I've got ~6,000 miles on my 2020 Silverado Trail Boss. I started my truck and the gas gauge was at Empty, even though it had a half tank. The low gas light and check engine light also came on. Drove it to the gas station and filled it up, turned the truck on and off a few times, the issue did not go away.

 

Anyone have this happen or have any ideas?

[davester]

time to drive it to the dealer.

[Pinnacle]

37 minutes ago, davester said:

time to drive it to the dealer.

yup, comes as standard option aswell

[ILSilverado]

20 hours ago, davester said:

time to drive it to the dealer.

Disconnect and reconnect the battery first.

[Andrew F]

Update.... Truck has now been at the dealer for 3 weeks.

 

They've replaced the fuel pump module which took 2 weeks to come in. Replacing this did not fix the problem. Dealer claims they have been working with GM engineers to troubleshoot the issue. The next step is to replace the serial gateway module. "Hopefully that will resolve the issue"?

 

Will update when I hear more...

[ILSilverado]

3 hours ago, Andrew F said:

Update.... Truck has now been at the dealer for 3 weeks.

 

They've replaced the fuel pump module which took 2 weeks to come in. Replacing this did not fix the problem. Dealer claims they have been working with GM engineers to troubleshoot the issue. The next step is to replace the serial gateway module. "Hopefully that will resolve the issue"?

 

Will update when I hear more...

Just keep in mind most states lemon laws state 30 or more days out of service gets you a replacement vehicle. I would contact the BBB and get the paperwork ready.

[Ryguy]

This just happened on my truck yesterday. But I was able to clear the code by re-starting. 

[ILSilverado]

There is a new recall for the fuel pump failing. Give GM a call with your VIN.

[redwngr]

Or check on the phone app 

Or enter VIN  in the GM website

Or...

[camarodude10]

Yep, just bought my 2020 Chevy silverado 1500 custom two weeks ago. 800 miles in, fuel guage failed. Reads straight empty, or completely full. Changes randomly. Took it to the dealer on Monday and they can’t figure it out. Are now in a case with GM and will be dropping the tank to run tests on the sending unit. 

[Colossus]

sounds like early GMT-800 issues. 

[RE1]

GM is putting out some impressive quality nowadays.  

[JFSC]

On 2/24/2020 at 2:25 PM, Andrew F said:

Update.... Truck has now been at the dealer for 3 weeks.

 

They've replaced the fuel pump module which took 2 weeks to come in. Replacing this did not fix the problem. Dealer claims they have been working with GM engineers to troubleshoot the issue. The next step is to replace the serial gateway module. "Hopefully that will resolve the issue"?

 

Will update when I hear more...

I know it’s been a while since this thread was open, but did the dealership ever find out what it was? I’m having the same issues right know on my 2019 LT

[GMCustomerService]

On 10/19/2022 at 12:06 AM, JFSC said:

I know it’s been a while since this thread was open, but did the dealership ever find out what it was? I’m having the same issues right know on my 2019 LT

This is certainly not what we like to hear, JFSC.  Please know, customer satisfaction is extremely important to us. Our team would be more than happy to take a closer look into the concerns with your 2019 Chevrolet Silverado LT. To do so, please send an email to [email protected] with ATTN: JFSC/GM Trucks in the subject line.

Please include your contact information, VIN, a brief description of your concern, and the name of your preferred dealership. We look forward to hearing from you. To learn more about GM’s privacy policy, please visit https://www.gm.com/privacy-statement.html.
 
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[Silvarado2021]

2021 silvarado  doing the same thing..at the dealer now