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Doug_Scott

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Everything posted by Doug_Scott

  1. Doug_Scott
    Don't recall any lockout in the 70s. What are you referring to? Whenever there is a new technology there is the panic from those that depend on buying a tool to make changes. The people with the time and patience always seem to find a way in. I have no problem with GM cutting warranty if I modify the ECM. It's simply too easy to screw an engine up these days.
  2. Doug_Scott
    Do you have a link to that lawsuit?
  3. Doug_Scott
    I actually run an app on my smartphone that monitors my driving and reports back to my insurance company. It has given me a 25% reduction in insurance premiums. When you pay $1.1k a year for insurance, a 25% reduction is worth driving like a law abiding citizen. Since it is tied to me, and not my vehicle, I have the ability to change the trip, to being on my motorcycle where they do not have an algorithm built for bikes, so the trip is excluded. I find driving within the law entertaining. What's with the paranoia regarding somebody wanting to watch your activity. There are 350 million people in the USA, you really think you would make the short list?
  4. Doug_Scott
    Circumference? That is one small tire. I prefer 17" wheels or 18" wheels at the most. On a 20" wheel a 31" tire should have a 5.5 inch sidewall. On a 18 inch wheel it's a 6.5 inch sidewall. 17" wheel, 7 inch side wall. To me it's the extra metal that I don't like the look of. I am from the era that trucks with big lift kits had 15 inch wheels. The biggest stock wheel came on one tons, 16.5 wheels. .
  5. Doug_Scott
    No test truck with the new base engine? That's the truck I want to see tested. Don't care how a $100kCAD truck runs or drives, it will never sell in Canada. The Ford Raptor is up to $30k less.
  6. Doug_Scott
    Found this description on the Canadian gmaccessories site that is linked from my dealers webpage.. Improve the rearward field of vision of your vehicle with these Vertical Trailering Outside Rearview Mirrors in Black. These mirrors are designed to manually extend outward to create a wider field of vision than regular production mirrors, perfect for maneuvering a trailer or camper. Requires $300 additional door wiring harnesses and installation. Pre-MY15i models may require additional jumper harness 23387133. Contact dealer for additional details and pricing. Trailering Outside Rearview Mirrors, Black (Requires additional wiring) 23372182Add To Cart You are likely in for some issues due to build date. August 2014 is a very early 2015, and may actually have some 2014 "underpinnings". Have you tried seeing if your selling dealer happens to have one of the mirrors you are wanting in stock for you to compare connectors? Have you looked at what is available to you on the American gmaccessories website?
  7. Doug_Scott
    That diesel was more of an attempt to convert an olds 350 to run on diesel. It never should have made it out in the news let alone in production. It was GM's new Coke. Engine technology has advanced more in the last 25 years than it did in the 100 years before that.
  8. Doug_Scott
    Car and Driver reviews show the 2.7 EcoBoost 1/10 slower than the Silverado 6.2, with both trucks being 4x4. They say the 4x4 are quicker simply due to traction. A tenth is easily made or lost by driver reaction and is essentially a side by side race, with the first truck to leave having a fender length lead. Hardly a trouncing. The 3.5 is quicker than the 2.7 in their tests. Forced induction simply effectively increases displacement. With 14 pounds of boost the engine will produce torque similar to an engine with twice the displacement. A 2.7 will be like a 5.4. Start adding in variable cam timing and variable lift/duration and it becomes a highly modified 5.4. It does that with 200 pounds less weight and fuel mileage of a small displacement engine on the highway.
  9. Doug_Scott
    You may want to see what others publically claim for Chev pickups. Found this listing online https://www.zeroto60times.com/body-style/pickup-truck/fast-slow-0-60/ You can take a look at both gmc and Chevrolet trucks, not one even close to a 5 second run, even on short stock tires. You are saying a 6.2 will run in the 5's stock. You may want to try a different method to time your truck, it seems pretty optimistic to me.
  10. Doug_Scott
    Just how many of the yet to be released 2.7 4cyl trucks have you had "line up and think their cool"?
  11. Doug_Scott
    Some think that since trucks have come with v8s since the 30s that it must be the best engine. As long as GM has done the proper real life stress testing on this new engine it may very well be a major advancement. They aren't revving the snot out of it, it may surprise a lot of skeptics.
  12. Doug_Scott
    Since HP is simply a mathematical number based on torque and rpm it would make complete sense that the HP is higher when the torque is also higher at a set rpm. With the torque line the way it is, who cares about the hp number. This gas engine is undersquare. Been a long time since we had an undersquare gas engine in a car or truck. That explains the low redline. Running what I think is going to be the first "living" camshaft gives the high flat torque line. Can't really call it a torque curve now. By essentially giving the engine a unique camshaft profile for each and every rpm is something that has been dreamt about. If they can control lift and duration, as well as cam timing, you can have optimal valve action instantly. If this engine gives a good life, I can see it removing the 5.3 from the lineup. A pickup running tp 60mph in under 7 seconds, doubt a 6.2 can do that now, and for sure a 5.3 can't. Wonder if they will come up with an undersquare inline 6 with the same camshaft technology and make that an optional engine?
  13. Doug_Scott
    Have you looked into the error message shown in the photo you attached? Have you checked the rear brakes? If they have lots of shoe left, make sure they are adjusted properly and that the parking brake is also adjusted correctly. Never use the parking brake adjuster to adjust the brakes. The parking brake should be completely backed off prior to adjusting rear brakes.
  14. Doug_Scott
    Start at the bundle of wires that goes from the body to the tailgate. Also follow the wires from the left rear light to the body of the truck. There is likely a spot where the power wire to that light is being shorted to ground when the gate is opened.
  15. Doug_Scott
    How many complained about the ability to slam the Ext cab door into the front door by the kids when they got the order wrong getting out of the truck? Things tend to go wrong when you are presented with slightly different procedure. Accidental use of this new tailgate will not happen due to forgetting. You have nothing to forget. "Muscle memory" things are what will make you accidentally do something, like getting out of the truck and just closing the door without regard for the back door being open. Something kids that have grown up on 4 doors that always open the same direction. This tailgate will likely evolve into requiring the inner gate to be closed before full tailgate can be opened.
  16. Doug_Scott
    Your best bet would be to locate the wiring diagram for your truck. There is a site that has wiring diagrams as well as service manuals, but I cannot remember the name of the site. Hopefully someone reading this thread will be able to recall the site name. Have you looked in the owners manual to see if they have the fuse panel listed with a table giving what circuits are connected to what fuses? Generally fuses protect more than just a single circuit, for example one fuse may protect the horn and brake lights. Since all three outlets are dead, the issue will be before the wiring splits off to the three outlets. Are you testing fuses with a test light, or by sight? Mini fuses have the legs of the fuses exposed on the plastic end of the fuse when installed. A test light probe can touch either leg to verify power. Test both sides of all fuses with key on.
  17. Doug_Scott
    Isn't there a small sub-fuse panel behind the removable cover on the driver's side of the dash that is accessible when drivers door is open?
  18. Doug_Scott
    Doubt the ECM will open them with the vehicle stationary. There is sufficient air flow from around the front of the radiator for the fans to pull through the radiator. Don't know if the ECM looks at vehicle speed as one of the inputs. If it does not, you may be able to unplug the cooling fans to trick the ECM into opening the shutters. Note that you must not do that and run the a/c at the same time. It will likely damage something due to excessive high side pressures. I once had a customer bring in a mid 70s small car with aftermarket a/c. The shop that installed the a/c left the original 2 blade engine fan on it, and it would burn the a/c belt off at traffic lights due to high side pressures so high it stalled the compressor.
  19. Doug_Scott
    The ECM will set a DTC code if there is an issue with the shutters. What are you using to monitor engine temps? Try using a scan tool to monitor the coolant temps while driving. Shutters are a good way to stabilize temps, and have been used for decades in large commercial vehicles. They should reduce temp variations, not increase them. Anyone know if GM is using the shutters to replace the thermostat?
  20. Doug_Scott
    Generally what happens if you are not careful is that you rotate one axle and do not ensure that the other axle rotates with the one you are turning, and that will cause the differential portion inside the carrier to rotate. To get it back inline, try holding one axle, and turn the other one while watching the differential. You should see it trying to rotate. This may take a couple of helpers due to the human body limitation of only having the one pair of hands. I realize it is too late now, but, I used to put the pin back in once the "C" clips were removed. this would prevent the differential from rotating while I was doing stuff to axles.
  21. Doug_Scott
    Are you using a new pinion nut? Pinion nuts are not reusable due to them being a self locking type nut. Usually they have a deformed end on one side of the nut. If you reuse the nut it will come loose after a while. Torque value is usually there to ensure the fastener is "stretched" enough to prevent it from coming loose. Since you are not getting anywhere close to deforming the threads with torque, they have to use another way to ensure it stays tight.
  22. Doug_Scott
    Take a look at post number 3. Simply put, modifying the "computer" may void the warranty on the parts of the driveline that the modification impacts, but will not void the warranty on the HVAC system. "Void the warranty" is far too broad a term.
  23. Doug_Scott
    I would take the dealerships word for this. First off, it was not the dealership that said it, it was one person that currently works at that dealership that said it. Will he still be there when you try to take him up on this? Secondly, and more importantly, it is not the dealership that is honouring the warranty, it is up to GM. GM may happen to show up while the warranty work is being performed, and deny the claim. If the dealership violates any agreement they have with GM in regards to them acting as agents of GM, it may cause serious issues for the dealership. It has been years since I worked at a dealer, but, the last dealership I worked at (a Chrysler dealer) had to return every part replaced under warranty to Chrysler with the claim. I had never heard of that before starting work there, and was amused to see mechanics squirting silicone into a plastic bag to return to Chrysler because they got silicone as one of the parts needed for warranty repair, and the original part used a gasket. Manufacturers are getting pretty tight with warranty these days. I know GM sent out a bulletin a couple of years ago in regards to getting a screen shot of the PCM screen on the diesel engine claims to prove the PCM code was not modified prior to engine failure.
  24. Doug_Scott
    Question is far too vague. The simplest answer is that no, it will not void the ENTIRE warranty. The Magnuson–Moss Warranty Act covers this. Basically unless your modification causes the failure, warranty is not impacted by the modification. For example, you raise the truck, then a month later the A/C compressor fails. The modification of the suspension could not cause the compressor to fail. On the other hand, if you raise the truck and put larger wheels and tires on it, only to have a wheel bearing fail a month later, they may take the line that the non-stock wheel created an extra load on the bearing due to a different backspacing and would not cover that failure.
  25. Doug_Scott
    Decades ago while in trade school(Canada uses a license system for mechanics that was government controlled at the time), one of the questions on a test I took asked what the max voltage could an alternator put out when run without a battery in the circuit. Most guessed 15v (including me). Next day the instructor showed us what it was. He ran the ignition off of a battery to protect it, and isolated the charging circuit. He stopped the test once it hit 130v. I have never tried running a car without a battery ever since then. No valid test result can be achieved by disconnecting the battery on a running vehicle. To check charging, use a volt meter across the battery terminals. Over 13.2, and under 14.8 is safe. If you start blowing bulbs, it is more commonly from overcharging. It was easier in the old days when the batteries had vented removable caps. It would boil the battery dry pretty quick and be easy for the customer to notice the smell.
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