geswek

Just got my truck back; was same thing. Fuel pump control module was shot. They had them in stock; took a day to fix.

23 5.3 1500 LTZ with 16k miles. I’m fairly certain the same problem. We were on the way to lunch and going through an intersection when the engine cut. It wouldn’t fire up; just turned over and over. Called a tow truck and had it dropped at Chevy.

I literally forgot I had this installed until you replied. It's been a none issue -- haven't had a single problem. I also don't drive every day and it doesn't run the risk of draining my battery like the old range devices did that you plugged into the OBDII. I'm getting the oil changed on Friday and I have zero plans to remove it.

I don't think so. I think the trailer functions are based on detecting something plugged into the trailer plugs -- tapping the feeds for the lights themselves I would think is OK. Maybe. Just what logic is telling me but I could be so wrong.

I was thumbing through the parts catalogue and I noticed that my VIN (2023 LTZ Z71 1500) only lists 2" rear blocks and it says "FOR 2" LIFT PKG". I thought the lift package was only on the AT4/ZR2's? Did the LTZ Z71's come with a 2" rear block instead? I remember when I had my old 2015 LTZ Z71; we put a BDS 6" lift on it with a BDS 5" rear leaf spring and left the factory 1" block. I thought all our trucks came with 1" rear lift block. I'm on a BDS 6" now with 4" block so I couldn't measure, nor do I even have my old block. LOL. Yep, random question of the night!

Ok that was a piece of cake! I’m on a 6” lift and I didn’t even need to pull the liner. You can pull it back enough to access the ECM. I bet you could do it on non lifted truck too. Just crank the wheel to left and slide in there. Took me 5 minutes; which means swapping it for recalls etc won’t be hard. its right above that silver bolt by liner there.

Yep! I have my recall Friday for the radio module. After that I’m good for just basic oil changes.

OH good call! I forgot I got to schedule that recall.

THAT is awesome! I'm hoping to get it next week and installed. Looks like I should be able to move my liner out of the way to access the ECM. I'm on a 6" lift with 35's and have plenty of space above my wheels to work. I don't really see a need to pull the whole thing off LOL. That's been the biggest gripe I've had is this dumb DFM and Autostop. I hate having to remind myself to go into manual 9th gear to disable it every single time.

Range just dropped their tool and I ordered it. Excited to get it installed and see how well it performs. They went the inline ECM approach instead of the OBD plug. I prefer that since my AMP steps are in my OBD port LOL. Will provide some feedback once I get it installed. https://www.rangetechnology.com/products/dfm_module/parts/RA007

i wish. It doesn’t appear they support the 2023 model.

Do you all have a rough ride with the RT's? I've got about 6k miles on mine and they vibrate like no tomorrow above 30mph +. It's pretty irritating on the highway for long drives. I'm running 35psi on 35x12.50x20 on Fuel's. I've gone to several shops and have had them balanced multiple times. Suspension checked out. Nobody can figure out why. I'm at the end of my rope on just ripping them off and going to something else. I don't expect a caddy ride but I never imagined these things would vibrate so much. It's like cruising on a pebble road at 70mph LOL.

THANK YOU! It was that. I put it in L9 and it stopped that crazy buffeting sound I'd get in the rear. Do you keep it in L9 always? I noticed not much MPG savings between L9 and auto when driving hours on the highway. Wish we had a way to disable this dumb DFM crap.

Those of you who went custom or cat-back with no flapper valve -- do you have this weird kind of "buffeting" sound from the rear on slow speeds 30-40 when shifting to low gear/activating cylinder deactivation? I'm chasing down this weirdness that's been present for a really long time and I think it's exhaust -- it wasn't long before I ripped out the stock and put a Flowmaster 40 on with no valve but I didn't think much of this. Just curious if others experience this. Hard to explain -- feels like buffeting under the bed. I can make it happens a lot around 20-30-40ish mph when just casually driving and getting the truck into the lowest gear and/or having cylinder deactivation happening along with it. I was tempted to run it by Chevy to make sure it wasn't like a diff issue or transmission issue. I can't remember if this was present before I put a lift on. I had the exhaust way before I put the lift but didn't really pay attention I suppose.

I bought this one: https://www.putco.com/product/blade-tailgate-light-bar-plug-n-play/9202060-05/ I attached the PDF install for it. 529005.pdf