When is GM Going To Offer A Serious Diesel?

coloradocowboycoloradocowboy Member Posts: 6
edited February 2014 in Chevrolet
Folks, I own a 96 Chevy K1500 stepside and
absolutely love it. I own horses and pull a 2
horse trailer. My current truck is maxed out
pulling 6500 lbs. I will be in the market for a
new truck in the next 12 - 18 months. I love the
GM truck line, however, I want a diesel in a 1 ton
truck, primarily for its pulling power and fuel
economy. I have looked at the Ford F350 and Dodge
3500 Ram, both with impressive diesels, but I can't
bring myself to buy either of these trucks. Call
me a GM diehard or what??

Does anyone know if GM is going to get real and
offer a respectable diesel in the upcoming year or
two. If I felt there was the possibility of one
coming, I'd wait for it. I have heard rumors that
GM may be talking to Caterpiller and Isuzu about a
new diesel for their pickups. Any inside info
anyone has would be appreciated.

I would really hate to buy a Ford or Dodge, and
then regret it. But then again, I know if I bought
the current GM diesel, I'd really regret it!!

Thanks for any help or insight anyone can provide.


  • FETZFETZ Member Posts: 51
    I read in a press release somewhere that GM has in fact struck up a deal with Izuzu to supply their diesel engines. They are supposed to show up in GM trucks around 2001, if my memory serves me correctly.

    I'll see if I can find that article and give you more specifics.
  • cdeancdean Member Posts: 1,110
    Isuzu it will be, 300 hp, 550 ftlb torque are early reports, Allison Transmission.
  • FETZFETZ Member Posts: 51

    Do you know about when? I can't find the article.
  • coloradocowboycoloradocowboy Member Posts: 6
    Isuzu?? I know they make small diesels...have seen them in the small Isuzu delivery trucks, but do they make the larger ones? What is their reliability record? Would this be a brand new engine, or one that's already proven. Its pretty hard to top the Cummins in the Dodge for reliability. I like the sound of the horsepower and torque that cdean quotes. I also assume that it will be a turbo given the numbers cdean is quoting.

    Do you know if this new engine will coincide with the expansion of the Silverado line to the 2500 and 3500 series??

    If the Isuzu is a solid engine, it could be worth waiting for. I appreciate the info. I'll keep posted for more.

  • FETZFETZ Member Posts: 51
    I found an article about the GM/Isuzu deal at auto.com. It's very general, no specifics. I too would like to find out more. I think the 2001 time frame was about right though, as the article states production will begin sometime in 2000.

    Here's a copy of it. Hope nobody sues me for any copyright infringement! Sorry it didn't paste in here very well.

    GM, Isuzu team up to build
    diesel engine in Ohio

    September 9, 1998

    Detroit Free Press Automotive Writer

    General Motors Corp. is forming a joint venture
    with Isuzu Motors Ltd. to build a diesel-engine plant
    near Dayton, Ohio.

    The factory will cost more than $100 million and
    employ 700 workers when it opens for production
    in 2000. It will supply 6.6-liter diesel engines for
    GM sport-utility vehicles, pickup trucks and
    commercial trucks.

    The 550 workers at GM's existing diesel-engine
    plant in Moraine, Ohio, are eligible for transfers to
    the nearby Isuzu plant when it opens. GM expects
    300 will transfer and the rest will have retired by the
    time the new plant is running.

    GM Chairman Jack Smith is to dedicate the new
    plant today in a ceremony with Isuzu Chairman
    Kazuhira Seki.

    GM, which owns 37.5 percent of Isuzu, has been
    giving the Japanese automaker more work in the
    diesel field. Last year, Isuzu took the reins in
    worldwide diesel-engine development for GM. That
    was part of GM's initiative to focus development in
    the hands of companies that have the most
    expertise. For example, GM's Adam Opel AG
    operation in Germany was given the lead in
    small-car development.

    For Isuzu, the new factory would give it the
    opportunity to become a major engine maker in the
    United States, especially if diesel engines come into
    wider acceptance among consumers.

    Diesels power about 22 percent of Europe's cars
    and a new generation of direct-injection diesels
    common in Europe is thought to be less harmful to
    the environment than gasoline engines. Some
    industry analysts predict diesels will become
    increasingly popular in the Untied States because of
    the environmental angle and their greater fuel
    economy .

    "In the long run, you're looking at increased demand
    for diesels, particularly in sport-utility vehicles," said
    auto analyst Jim Gillette of the research firm
    International Research Network Inc. in Grand

    The new plant will have the capacity to turn out
    about 100,000 6.6-liter, V8 engines a year,
    estimated industry analyst Michael Robinet of CSM
    Forecasting in Farmington Hills.

    Those engines will go into commercial trucks,
    replacing the current generation of 6.5-liter diesel
    made in Moraine. And they'll be available for
    passenger vehicles such as the full-size C/K pickup
    trucks and the Chevrolet Suburban sport-utility.
  • cdeancdean Member Posts: 1,110
    Isuzu makes large diesels for some delivery type trucks. I've had no experience with them, i've heard a good reliability report from one guy. i do know that Isuzu makes very large industrial diesel engines such as those that go in offshore liners, crewboats trains and such. so they have been building diesels for a while. i think the chevy engine will be a new design from the ground up.

    I heard the horsepower and torque #'s from 2 unrelated people: a dealer who is a good friend of mine, and 2) an tech that works at a diesel fuel pump repair shop; he has been to a seminar covering new automotive fuel pumps, and the engines they go on.
  • coloradocowboycoloradocowboy Member Posts: 6
    Sounds promising! Thanks for all the information. I think I will wait for this new engine to materialize. I like everything else about Chevy and GMC trucks so much, that I know that I would be disappointed if I went for the Ford or Dodge.

    The new Silverado is pretty nice. I haven't driven one yet, but I like the room in the extended cab. I expect that the 3500 series will be equally as good. I am waiting for the dually to arrive, sounds like 2001 possibly. If the new diesel is ready then, it could be real competition for Ford and Dodge. GM just can't afford to screw up another diesel though!!! Let's hope the Isuzu relationship works and GM doesn't ruin a good thing!

    Thanks again for all the info all!
  • quadrunner500quadrunner500 Member Posts: 2,721
    I think the Ram 2500 with the 24 valve Cummins Turbo diesel is awesome. I especially love the spacious interior of the reg cab model with leather seating, something you can't get right now with the Silverado reg cab. Still, what I don't like is the live axle front suspension on the Ram 4x4 and F250 super duty. Having an independent front suspension is the largest reason why the Silverado 4x4 rides so much better. I was looking for a work that I could load an ATV in the back, and haul it to Utah from Colorado pulling my motorcycle trailer behind. That would be easy money for the Ram. But even though that 20-21 mpg of the diesel is great, when I factored in that diesel fuel in Colorado cost 23% (taxes I'm sure) more on average than unleaded regular, 20 mpg now becomes the equivalent of 15. So I ordered the Silverado 1500 reg cab 4x4 instead. It's not going to be as tough as the Ram or Super Duty, but with EPA 15/18 ratings it will end up more economical, unless I was going to keep it for 300,000 miles. For the diesel, that is appealing, but I had to take into consideration my own habits, that I have purchased and maintained every vehicle to drive it for 200,000 miles, yet end up finding something else far sooner because I get bored, or something else becomes a "must have." By the way, the Silverado with the Z85 suspension rides better, and is quieter than anything I have been in except a Lexus LS400.
  • RichRich Member Posts: 128
    I had always been a GM man. I got spoiled by my first Ford F-250, ('86) and never looked back. My '99 F-250 7.3L PSD rides almost as smooth as my son's '98 Explorer Sport. The '86 was great in quality, a '92 F-250 even better and this '99 is unbelievable! This is the first new vehicle that hasn't been back to the dealer for nit picking issues. Back in the late '70s and early '80s I wouldn't even rent Fords due to poor quality. But things have really changed. I think that if you got yourself a '99 PDS you wouldn't be disappointed.

    The only complaints that I have with my '99 SC F-250 PSD are no lights in the cup holders and the trailer towing blind spot mirrors don't allow for adjustment. (Their aiming ain't bad but just not perfect.) How's that for nit picking?

  • dodgeramdodgeram Member Posts: 202
    Has anybody seen dodges new powerwagon show truck.
    They say it will resemble the next ram trucks in the coming years, and the diesel engine, well its it CAT! 250hp, and 780LBS torque. Dodge must have something brewing with CAT and I hope it falls through. And I also hope that they keep the cummins as well. All I know is that dodges next truck is really really going to kill the competition!
  • dave40dave40 Member Posts: 582
    Dodge Dogs never will kill GM and Ford
  • KCRamKCRam Mt. Arlington NJMember Posts: 3,516

    Then you better check some sales figures. Ford and Dodge are #1 and #2 in diesel pickup sales. GM isn't even close. And Ford is ahead of Dodge strictly on volume. If Dodge and Cummins could raise production with more plants, they could easily be the number one diesel pickup. GM has always fallen flat on its face with diesel pickups - first the converted Olds 350 (what a joke in a truck), then the weak 6.2, then the problematic 6.5. I will give GM all the credit in the world for doing some things well (automatic transmissions for one), but diesels aren't one of those things.
  • dodgeramdodgeram Member Posts: 202
    Listen up Kcram. I own a 1994 chevrolet 1 tonne 6.5 turbo diesel. I am using it as a welding rig. It is carrying a weight of 15000 pounds, and on top of that it can tow a further 11000 pounds on top of that. I dare you to find another truck capable of that. This is not dodgeram talking. I was just visiting and was shown this site. Upon seeing your remarks about the gm 6.5 diesel, I had to reply.
  • KCRamKCRam Mt. Arlington NJMember Posts: 3,516
    The load you're moving has nothing to do with the engine - weight is carried by the chassis and the suspension. There are plenty of trucks that can outrun your rig with the same load. A Ram/Cummins or a Ford/Powerstroke would be in the next county.
  • cdeancdean Member Posts: 1,110
    where did you find the diesel sales numbers KCram, i've been curious to see those?

    i've seen quite a few different 6.5's in use, and all in all, they've done the job. No, they definitely don't run like a PS, they don't have the mileage of the Cummins, but it is more powerful than most other motors. my father's work truck is a 3500-HD with the 6.5. the truck weighs 13000 empty. have pulled, on several occaisions, a 25 ft Load King, with Cat D-6 on back, comes out to over 20,000 #'s being pulled. the truck handled it easliy, and the engine pulled it flawlessly. slowly of course, but with overload like that, you don't try to go fast anyway. anyway, the engine will do the job. the 6.5's have had lots of random problems.
    they just haven't been reliable. the 6.5's i've seen that have avoided problems--have been damn good motors.

    My dad's truck has been a good one. he just recieved a new one, ordererd it for business reasons, and as soon as he took delivery of the new one (with a 454), the diesel blew a head gasket. they just haven't been reliable engines.
  • KCRamKCRam Mt. Arlington NJMember Posts: 3,516
    I used to have the website bookmarked that showed the sales figures, but I have misplaxced it - gimme a few and I'll dig it up.
  • markbuckmarkbuck Member Posts: 1,021
    I owned an 86 Isuzu Trooper with their turbo diesel. Broke a rod and beat up the crank at 41,000. Had to fight Isuzu for any help.....

    My crappy 7.3L ford went 170,000 miles with very little problems.

    I would never buy anything that Isuzu made, sold or designed.

    Buy a cummins dodge. Or buy gas
  • cdeancdean Member Posts: 1,110
    interesting, actually i'm surprised a little by the numbers. i don't think GMs SUVs and vans sell many diesels, mainly cuz i've only seen one or two diesel suburbans over the past 4 years, and never have seen a van. I would say GM diesel truck sales are about 3 or 4k behind Dodge.

    i don't think the percentage means a whole lot, but lets please not get in a discussion about important meaningful statistics---that could be an oxymoron, :)
  • KCRamKCRam Mt. Arlington NJMember Posts: 3,516

    I only posted the percentages because it shows how many of the average truck buyer are interested in that company's diesel offering. If sales were equal, Dodge would clearly be the diesel leader. GM buyers on the other hand, buy all those pickups, but stay away from the 6.5
  • cdeancdean Member Posts: 1,110
    is that really the way it works? you're saying that people:

    1) pick out a brand of truck, then
    2) decide on an engine

    I'm saying that people

    1) pick out the engine they need , then
    2) pick out the brand of truck

    my way says the percentage is a meaningless number. divide actual one-tons up, you'll see dodge and chevy sell close to the same; then look at half tons, and you'll see chevy sells a crap load more half tons than dodge. but do all these half tons chevy's (which compromise the greater part of GM's sales number) compete with the diesel? No.

    that percentage compares people who buy a shortbed with v6 to people who buy one ton crewcab diesels. thats why i say its not a good measure. look at what you did, you made me talk stats... :)
  • KCRamKCRam Mt. Arlington NJMember Posts: 3,516
    oops, sorry - I know you hate that... :)

    I agree with you in that it is overall numbers which include all models of a truck. But remember this - the GM half tons are the only trucks that offer a diesel. So while Ford and Dodge only offer theirs on HD 3/4 and 1 ton trucks, the GM 6.5 is available across the board in all their trucks.

    Without talking stats and percentages, you still have to wonder why GM can't sell more oil-buners than Dodge, unless their engine IS that inferior.
  • tmd01tmd01 Member Posts: 23
    The company I work for was died-in-the-wool GM truck users. They even invested in the GM diesels. But after having their trucks in the shop more than on the jobsite, they went to Ford. Why Ford over Dodge? Availability of one year old trucks with diesels. They are looking at the new F-4/550 so they can get crew cabs. They bought a 3/4 ton Suburban full blown everything with 4x4 and 454 cu engine and it's (they tell me) a pile of junk, but they are stuck with it. It wanders all over the road and vibrates and GM can't fix it. We are all waiting to see what GM does with the Diesel.
  • grand1grand1 Member Posts: 2
    Kcram what do you think moves the chassis down the road.
  • KCRamKCRam Mt. Arlington NJMember Posts: 3,516

    You missed my point. Ford has put everything from 140-inch 4 cylinders to 429-inch V8s under the hoods of Mustangs - all of them will move the load that a Mustang is capable of carrying. But if you need to carry more than 4 people and a lot of cargo, even a 429 Mustang won't get it done, because there's no room or weight capacity. You need a larger stronger vehicle to do it. As Chevy showed a few years back, a 454 can get under the hood of a half ton, but are you going to pull a fully loaded horse trailer with a 454SS? The GMC Syclone had a nearly 300hp turbo V6 under the hood, but it only had a payload of 500 pounds. Are you going to throw a pallet full of cinder blocks back there? It's the chassis that holds the weight - almost any engine can move it, albeit some slower than others.
  • 26andrew126andrew1 Member Posts: 93

    that is not the diesel going into the trucks. One bad incident does not mean the whole line is junk. you had a lemon sorry for that, let each choose what they want in there truck.

    The diesel is the one you see in the large isuzu delivery trucks or (tow trucks around here). I know nothing about it. Other than people in the diesel industry who use them for what they are meant for (not because they sound good) say it is a great engine that runs circles around others.

    Yes the 6.5 sucks. To me it is just another option other than gas. GM has not been trying to compete in the diesel engine class, because they have had nothing to compete with.

    Like before alot of the Dodge,Ford guys seem to be ripping GM apart before the product is even on the market. Saw it on the Silverado post now its happening here. What till the product is out, and you see what it actually does.

    I question CAT putting a diesel in Dodge. Why would they back out of a deal with GM because the numbers are to low for them to build a whole new plant. Then all of a sudden sell it to dodge. Yes dodge may sell more diesel now but not enough to build a whole new plant. Sounds like rumor to me. Plus I see alot of posts of dodge owners having transmission problems. How could it all of a sudden handle a CAT engine. Besides CAT does huge diesel applications, and that is about it. My two cents on the CAT thing.
  • grand1grand1 Member Posts: 2
    Listen up Kcram. Not every engine can carry a lot of weight. You obviously have no idea what you are talking. It is my opinion that you are making this up as you go. The chasis does carry the weight BUT it is the motor which moves it down the road. I am just trying to tell you that the 6.5 is not the weak engine you are making it out to be.
  • rocky12rocky12 Member Posts: 2
    I see the emotipons are high--but if one of you could help me--I am looking at a 95 GMC 1500 witht he 6.5 turbo in it.

    I really dont know jack about the motor but wish someone could help me decide if thsi is a "bad risk" diesel.
    What has specifically been the shortcomings of it
    What kind of fuel efficiency can I expect?
    Should I just avoid the engine??

    Please shoot straight with me
  • dodgeramdodgeram Member Posts: 202
    buy the cummins, last three times longer, you can only overhaul the 6.5 once, the cummins 3 times, that's probably gonna last you your whole lifee!
  • xl_1228xl_1228 Member Posts: 29
    I can't tell you anything about the 6.5's fuel mileage, but I can tell you it has some big shortcomings. The 6.5 isn't even comparable to the Dodge or Ford in the power department. Another big problem with the 6.5s is the injector pump. They are notorious for going out and I've heard many stories of GM trucks with the 6.5 diesel being in the shop more than they are on the road. Definitely go with something else, I would be willing to trust either a Ford Powerstroke or a Dodge Cummins.
  • FETZFETZ Member Posts: 51
    The GM 6.5 diesel is not a "weak" motor by any means. The main problem with it is the reliability of the injector pump, and the big bucks it costs to fix that.

    If it weren't for that problem, it would be a fine choice.

    Yes, I know about the numbers. Ford is at the top of the heap, with 500 ft/lbs of torque. Next is Dodge at 440 ft/lbs, then Chevy at 430 ft/lbs. But that's still plenty of power.

    As for this business about Dodge putting a CAT under the hood... they better work on beefing up their trannys! They haven't been standing up very well to the torque the Cummins is putting out. How do they expect it to handle more? Maybe they'll put an industrial strength Allison tranny in it to handle all that power. Who knows?
  • RichRich Member Posts: 128
    If you're buying a 6.5 for a daily driver and almost always empty, the 6.5 may work out for you. If you're buying a work truck, maybe not.

    If you're buying a used truck, do you KNOW how it was used previously? Has it always received DIESEL maintenance? Has the engine always been run with a fuel lubricity enhancer to lubricate the injection pump? What about cavitation damage in the cooling system? Are there WRITTEN maintenance records? There should be no real problem if the truck has been maintained properly. Is the dealer willing to give you a 2 year, 24K warranty on the engine? If the truck has been taken care of, the warranty is a safe bet for the dealer.

    Now let me stir up some emotionalism!

    I've always found that the cheapest vehicle to purchase is a new one. About the time the vehicle starts costing money to maintain, I get rid of it. (On the last two F-250s this was in the 120 to 130 K-Mile range.) The question that you have to answer for yourself is, when does this expensive maintenance life start on the vehicle you're considering. Finally, there usually isn't that much difference in the payments between new and used. Used are usually a higher interest rate for a shorter term.

    Good luck with your decision,
  • 26andrew126andrew1 Member Posts: 93

    they are right when they say it has problems with the injecter pump. you never know when it will go out.

    It seems that some trucks replace them anually. An there are other trucks or suv's that have not had one problem.

    WEIRD, My GUESS since they didn't keep it they have had problems. ONLY A GUESS. Safer to skip it
  • tnt2tnt2 Member Posts: 115
    I had a 6.5 chevy k3500 that I traded on a '99 F350. The 7.3 is much stronger than the stock 6.5 Chevy hands down. If you are a Chevy man and want a diesel motor, contact Turbo Technologies in Tacoma, WA. They sold me an intercooler kit for mine that made it run away from any diesel or stock gas motor, empty that is. Put weight on it and it held its own up to about 10,000#. Add a steep grade and it fell off, not to mention the eventual high exhaust temp. For me there are currently only 2 choices on diesel pickups, Ford & Chevy, that is until Dodge comes out with a real 4 door.
  • stanfordstanford Member Posts: 606
    Of course, Gale Banks can make the new Cummins and Powerstroke monsters even better ... without the extra temperature gain. Well worth checking out iff you tow large houses. Not much point otherwise IMO, but... very impressive numbers :-)
  • cdeancdean Member Posts: 1,110
    little confused on your post, just got back from vacation. I heard the Isuzu "delivery truck" straight 6 engine, wasn't going in the new Chevys. i was told it was a v8.
  • glenn2glenn2 Member Posts: 39
    when is GM going to build a serious truck???
  • dodgeramdodgeram Member Posts: 202
  • jrs2jrs2 Member Posts: 1
    I hear in the year 2000 chevrolet will introduce the 8.1 liter yes, I said 8.1, 780 ft-lb torque ISUZZU diesel engine. That ought to crush most any automatic transmission.
  • tnt2tnt2 Member Posts: 115
    I don't think it will make the 2000 model year. I'm not even sure of the size or numbers. The thing I do know is that GM & Isuzu are building a diesel engine plant in Dayton, OH and it won't be operational for at least 2 yrs. I heard possibly 2003.
  • 26andrew126andrew1 Member Posts: 93

    your right I was talking out my butt. Surprised anyone heard me.

    What it is not is the diesel that was in isuzu troopers an there small trucks
  • bigfur1bigfur1 Member Posts: 34
    Alright, according to the press release from GM the new deisel is going to be a 6.6L V8 direct injection turbo.
    To verify go to http://www.auto.com/industry/qgm9.htm
    found this in the archived topics #339
  • DoccersDoccers Member Posts: 16
    Reguarding Dodge Transmissions:

    Guess who Chrysler just merged with.

    Guess who's transmissions are most likely going to wind up in dodge trucks in place of the Chryco ones.

    Are Daimler-Benz heavy truck transmissions suddenly weak, too? :)
  • cornhusker1cornhusker1 Member Posts: 22
    If you look at the new silverado it doesn't look like a truck that a diesel should be in. It looks like a gasoline truck. The dodge looks like a diesel truck. The ford looks like nothing
  • xl_1228xl_1228 Member Posts: 29
    Ford looks like nothing huh. They've got the most powerful diesel out there, and in my opinion, they are way better looking than either Dodge or the GM trucks.
  • dodgeramdodgeram Member Posts: 202
    That most powerful diesel that ford has got is about to be de throned for good. Soon as dodge gets that new allsion 6spd tranny in there cummins (by this spring), you may say hello ISB.
  • xl_1228xl_1228 Member Posts: 29
    I'm sure Ford will have an answer to that. Ford's got a great transmission in the 4R-100, and I'm sure they will do something to make it even stronger to handle an even more powerful engine. How do you know for good?
  • dodgeramdodgeram Member Posts: 202
    Actully fords navistar is prettly much max out for power. They would have to find another diesel that could compete with the cummins. Thats what gm did, they had to go to izuzu for them to compete in the diesel category. But even that won't be enough to be the cummins allison combo, matched to dodges looks.

    Source for allsion tranny, www.car-truck.com
  • stanfordstanford Member Posts: 606
    Where do you get that information from? May I recommend checking out the Navistar Webpage about the 7.3l diesel? You can say that you like the Cummins better than the Powerstroke, but you don't have to make thing up about it.
  • KCRamKCRam Mt. Arlington NJMember Posts: 3,516

    stanford is right - the Navistar 7.3 (aka the T444E) is just as detuned for Ford as the Cummins is for Dodge. They are both medium duty engines. The GM 6.2/6.5 on the other hqnd, is maxed out, as it was designed for light duty trucks. The related GM 8.2 V8 was a medium duty, but it suffered from poor sales and hasn't been offered in years.
  • dodgeramdodgeram Member Posts: 202
    Actully the information came from this site a while back ago, I can't rember which topic, but it was argued then, and someone said that the navistar was maxed out for power, and the also stated that you can over haul it only a couple times, vs the three times for the cummins. Not my words, just stating someone elses opinion. If they are wrong, then sorry for false info.
This discussion has been closed.