Rehartline

Sorrry for the late revival of the post. 43k on a 2019 Sierra 5.3. Check engine light on for over a month. Dealer checked and said it’s a bad fuel pump control module. Fortunately the truck is running ok. As said, part from dealer is back ordered and no idea when GM will ship. They suggested that I callGM customer service and complain. The original has been updated to a new part number and I did find one on a shelf at a dealer in Canada. FedEx says it will be here in a couple of days. I plan on taking it to the dealer but just in case, does anyone know where the module is located? I assume it’s frame mounted somewhere and does it need to be programmed?. Thanks in advance.

I’ve already used mine with the mirrors folded in. Went through a drive through and the menu sign lights were off. Turn the left side lights on and ordered dinner. Not likely the intended use but what the heck, it worked.

Greetings all. Just got my 19 SLT this week and after a couple of hundred miles I get the dreaded “service brake assist” message. Is this going to a software update or is there more to it. I’ve seen several other posts, all low mileage. Seems unlikely there’s a hardware failure this soon on numerous vehicles.