Elpresidente

its a better engineering design. Just its not going to be cost effective. But if you got it. Good for you!

The new V8s GM keeps talking about are max 6% more fuel efficient; that is their marketing pitch which really means that on a 5.3L they get 18mpg in the city vs the current 17mpg. (+1mpg better). Not sure they can make a PHEV hybrid V8; even with the max trailering package. 1500 does not have the payload. Adding a 20 kwh battery is going to be 300lbs with all the electronics (estimating about 40 miles of EV range). My AT4 now only has 1390 lbs payload. A pickup with 1090 payload (like the F150 raptor cannot tow anymore; cannot pull a normal sized travel trailer with a family of 4) Say about 6500lbs empty weight 30 feet long. A standard Bunkhouse model with 2 bunk beds for kids in the back. https://www.gmc.com/content/dam/gmc/na/us/english/index/about/download-brochures/2024-models/GMTR23CT300_2024_SIERRA_LD_FO_011024_FINAL.pdf A lower trim maybe a elevation or LT with a 2.7L and the max trailering package maybe one can get it to 1500lbs payload with a PHEV. Although all the money is made with Denali models. No manufacturer today even tries to add functionality to anything other than the most profitable trims. Was excited about this option. But it now says the PHEV will become available in the first 2 years of launch so its probably going to be a 2028 or 2029 model. Crazy that it takes 4 to 5 years to add a battery to a power train when the truck doesnt change and the power train really doesnt change. (the major packaging). In the article below is says 2 more years. https://gmauthority.com/blog/2025/03/next-gen-2027-chevy-silverado-prototype-spied-testing-photos/ If they do release a V8 PHEV version; maybe they will release a 6.6L gas PHEV version. Would get a 6.6L up to about 21mpg combined in real world driving on 87 octane.

Probably everyone saw this. https://gmauthority.com/blog/2025/03/next-gen-2027-chevy-silverado-prototype-spied-testing-photos/amp/ I doubt gm will do this. But i really hope the phev comes with the 3.0L disesel and the toeing package is standard with this configuration. Aka a little more spring and D instead of C rated tires. i dont tow alot; but i have a travel trailer and its 30 Feet long and 6300 lbs unloaded. day to day my 6.2L is fun; but the fuel bill is brutal/irresponsible. GM a PHEV 2500 with a 6.6L gas would be great.

Did the math in my head. I was going to say 9kWh per hour would be the draw for a 1500 sized pickup with 7000lbs to 8000lbs of trailer behind on flat ground. In the most extreme Rocky Mountains uphill scenarios 10 or 11kWh would probably be the engineering requirement with a little safety overhead. after i wrote this looked up the ram charger spec. Confused on why its so high? 130 kilowatts..

I agree 1 chassis. I agree a range extender. For the PHEV and ICE options for 2027 hoping its the other way around. Fit the ICE powertrain in modern EV chassis. They are stronger better in alot of ways. although there is alot of talk now that ford will cancel the lightning. And in a couple years build a EV range extender like you said above with 50% of the batteries

Have gone back and read the press releases a couple times about the investment in the 6th gen V8 and the phev drivetrain. it sounds like they will hybridize a v8. Just wondered how other read it. anouncements is the 6th gen will get about a 6% fuel efficiency gain which is really not very much probably 1 mpg combined. true hybrid with regen brake and a electric motor assist will increase by 45% the mpg. gm get this right. I dont want to buy a RAM. But free fuel for 7 years or 80% from my solar panels will make the difference

Some other people are finally talking about this topic. Is it looking like it will now be 2 more years until we have the product I want https://gmauthority.com/blog/2024/11/2027-silverado-sierra-engines-what-will-the-powerplant-lineup-look-like/ There are good set of comments talking about this same topic at the bottom of this link. I have come around. Done a couple months of youtube reviews on the 2.7L and I think I like it. I mean I love my current 6.2L although with supporting a family of 5 the 2.7L PHEV option would be a great option. We have solar panels, and enough electricity for about 18,000 miles per year on a VW ID4/Chevy Blazer sized SUV. So really looking forward to this PHEV option. I think the 2.7L is probably the only platform that will allow PHEV option, one needs the weight savings or your not going to have any payload in a 1500. Additionally hoping they drop this 2.7L PHEV in a Suburban as well. With 5 people in the family as of next year; want to buy an 7 seater as we always end up driving multiple vehicles. Chevy for 2025 is dropping the current 2.7L in the Suburban for China, so there is a good chance in the next release the US will get it as well. I know its going backwards from an EV to a PHEV; but if I get 2 PHEV then we can use the electricity from the solar panels wisely. Been reviewing the 3.0L diesel; didnt know the Chevy required "Top Tier" Diesel; and it is no where near me; 60 miles away is the closest. By the time one buys DEF, and then fuel lubricant for each tank; plus the higher maintenance costs and the exhaust system risks. Its just not worth it. I usually consider myself open minded; I really wanted the 3.0 Diesel when I bought my truck just it was brand new and didnt want to take the chance. the 6.2L is amazing to drive but I have gotten 14.0 -> 14.5mpg over 50K miles; and it uses 91. In California its just to much $ per mile. Come on GM. Tell us a little about the future!

Been thinking about this a 5.3L with a PHEV battery would be an okay option. Its just GMC has low Gwvr. My 2020 AT4 6.2L only has 1398lbs pounds of payload. Chevy/GMC with a 2.7L could save 300lbs about the mass of a 25kwh battery aka 40 miles electric range. They would have to increase the gwvr to 7500 pounds to add probably the other couple hundred pounds of electric motor, regen equipment, inverters, computers, wiring etc. i get 14mpg. With a 2.7L one would probably only on the above 500+ lbs get 16 to 17mpg (realistic). With regen add 45% lets say 24mpg rounding up with recouped electricity. With alot of short trips this would be about 50% EV and 50% gas for me; as the solar panels are making free electricity. As well could buy 87 instead of 91. So my price for fuel would end up being 25% to 33% now. it sure doesn’t make sense adding a out a $400 a month new vechicle payment; probably the difference between this current paid off truck and a new one to save $100 in fuel. but excited about the PHEVs. This is really the only forum thread out there. Ford has higher GVWR ratings on its f150 i think they were like 7800 a couple years back with the high payload option. Give the PHEV a dynamic suspension option. It will all work out.

Not a member of the auto industry but almost absolutely no. it was not a successful high volume product. No one would be producing replacement parts except in rare batches to have just enough replacement parts in stock for repairs. If anyone makes it. as well the technology has important so much in 15 years not worth it. one thing GM is good at is power train engineering. I really bet the product in the pipeline is going to be best of breed. They have kept completely silent about it except they are investing in it. Therefore one can assume/infer that when announced to the marketplace it will be a marketing buzz. They know it will generate excitement. 2 more years. Already been waiting for this for 2 or 3

With the ram ev/procharger and scout ev extender specs out. The 1500 will be like a 1500 hd from years ago. For sure it will have the heavy duty springs with a battery option. These trucks above are more of a 2500 by default. It might be necessary to comply with emissions laws; to be a heavier class by spec but still sold a a light duty truck.

No one knows any details yet. I have looked online and the link seems like the most informed thing out there. These are going to be normal body on frame trucks with a battery. On your other topic yes the GMC EV vs the Chevy EV truck looks better; there is less avalanche "butress" angle or material.

https://gmauthority.com/blog/gm/gmc/sierra/2027-gmc-sierra/ they are building phevs half tons. what i want and not sure if it will get built is a 2500 with a 6.6L gas with a PHEV battery. we know we will get the 1500s. And probably only with the 4 cyclinder. I hope with the 3.0L diesel. But it wouls probably end up with a pickup with only a 1000 lbs of payload. Not much more than a sedan.

This will be a phev. And the least beneficial engine to invest in is the 5.3. i want it to be the diesel. But the 2.7L will work in the colarado. And probably other platforms eventually.

What are everyone’s thoughts on what engine and kWh battery size they will use for the PHEV 1500 pickup. 2.7L makes sense as its the smallest and lightest. As well it can be used in the Colorado platform and others. 3.0 diesel would be the most efficient pickup in the world. This is truly what i hope is happening. This way it can be cross shared with the tahoe, yukon, escalade. 6.2L could share the corvette erays parts? what are your thoughts?

Gentlemen we have a fix. PIT5735B has corrected the issue. I had the software update for the BSCM/brake module controller applied to my truck on May 27 2020. The PDF does not look like it is published online yet, so it is attached below. Had a GM engineer apply the BSCM with the mechanic at the dealership. The engineer also mentioned the PIT5730A & PIT5735B are both addressed in the same latest software update. If you read the description it is caused by the vechicle just rolling a little when parked. Although have never had a auto issue raise so many codes period; especially for a root cause being so minor. 20200529085624982.pdf

Anyway we can get everyone to post their case numbers with GM/Chevy engineers. The techs at every dealership will have called into GM and made a case which has a number. If we all share the case numbers here. And share this thread with the dealership to give back to the engineers they can cross reference all the cases. If a fix is not in the works this will prove to the engineers and product team multiple people are having the issue and will get it prioritized.

Kevin0311 we have the same issue. Told everyone would come back and support. Have been in the dealership three times. First and last time they just cleared the codes. Second time they replaced the electronic brake module. As well they flashed it with the latest as of February software update. during the second service they could not get the codes to go away. They did a software reset procedure multiple times and could not get the software to upload eventually they got lucky and got the upload to the EBCM to work. Although even by a brake bleed and physical reset they could not get the codes to go away so they just cleared them out of the computer. Disappointed with the lack of fundamental knowledge the service writer and techs had about how to deal with a software issue. They think that a code a OBD2 code is a match for a solution . It’s a match for a system or component having a problem but it’s not a match for an excat matching root cause. They fundamentally did not grasp that different software problems could bring up the same obd2 code; They had no idea what a data debug or dump was that they could upload to the GM engineers. Typical non logic or methodical troubleshooting; just random attempts at anything. If something clears a code or hides the code it that is good enough. Still a little baffled that GM tech training does not include what most junior high AP Computer students know about how to start troubleshooting software issues. Supposedly over a month ago (about feb 20ish) a new software fix would be ready in a month and they would call me back. Have not heard back yet. Had the codes another time when my wife was driving the truck had her confirm as have been keeping my obd2 reader in the truck. will put my service work order here and my GM case number.

Pulled the codes with two different readers, on different occasions. Was at home once and at Dads another time so used his reader another time. Truck had only been on the lot for days. Yesterday finally got the dealership after a couple visits to address; probably what happened is the internal engineer case approved the work. I know they changed multiple parts and reprogrammed. when I pickup will update the outcome for the community.

As well the recall has documented it is for a 2019 truck. Mine is a 2020.

Went to the recall site. My VIN does not flag this recall. as well after reading the bulletin. I do not have the ABS or ESC lights on, on the dash console. I know because the first time this happened took a picture of the dash console and looked at it now have never used the app to start. the last two times did not wait the five minutes to start the car. not sure the recall applies to all the U code MIL errors. if anyone else learns anything applicable. Please opt in. I know there are other people having this.

What EBCM firmware update was applied? does anyone have the bulletin number?

Has anyone found a resolution to this yet? i think I have two different issues. The u101 and u100 and u101 and P25a2 issue. Had this twice. First time was to far from a dealer. Second time it was Sunday and the dealership was closed. yesterday I had just p25a2 code only (none of the original ucodes) which might be the brake module; a software release was released for this in December. But it had bugs and caused problems with power steering. Now a second software update was released about a week ago. https://www.autoblog.com/2020/02/11/gm-brake-software-recall-silverado-sierra-ct6/ these show different symptoms and with a high probability are different issues. Did anyone get any real/solid/effective or practical information out of GM on the ucode issues. There are about 4 different threads out there so probably hundreds of people have had this.

Anyone able to provide the link to the table to the manufacturing dates of the 2020 1500s. I know they starting building them in August. Table has when orders opened up as well. Looked for a couple hours cannot find it..