Jump to content

Poor throttle response noticed in emergency

truckguy82

By truckguy82
in Engines & Drivetrain

Recommended Posts

DanMan_S Enthusiast

DanMan_S

Posted
Posted

Well that we can all agree it. We also know that GM did this intentionally.

 

The question is, did GM do it to protect the drivetrain, or protect the engine because it's an engine that has cylinder deactivation

 

 

Again, I'd say emissions and economy. The Corvette/Camaro engines have cylinder deactivation, and depending on the mode selection, their throttle response is ALOT tighter.

  • Replies 35
  • Created
  • Last Reply
truckguy82 Senior Enthusiast

truckguy82

Posted
  • Author
Posted

 

 

Again, I'd say emissions and economy. The Corvette/Camaro engines have cylinder deactivation, and depending on the mode selection, their throttle response is ALOT tighter.

How does poor throttle response help emissions?

 

Also you brought up my next question with the corvette

 

Does the corvette's more sporty setting improve throttle response and deactivate AFM at the same time?

muddkatt Senior Enthusiast

muddkatt

Posted
Posted

Here is a video of what I am describing. I know its not a Silverado, this is a Trailblazer but its the first video I found.

 

 

truckguy82 Senior Enthusiast

truckguy82

Posted
  • Author
Posted

Wow, cool video, thanks.

 

everybody should watch that, it just says a lot about what we are feeling in our trucks.

DanMan_S Enthusiast

DanMan_S

Posted
Posted

How does poor throttle response help emissions?

 

Also you brought up my next question with the corvette

 

Does the corvette's more sporty setting improve throttle response and deactivate AFM at the same time?

 

 

Slower to rev, less fuel is being burned, less CO2 emitted. They are punishing you when you want to get into the throttle.

davidio840 Enthusiast

davidio840

Posted
Posted

Here is a video of what I am describing. I know its not a Silverado, this is a Trailblazer but its the first video I found.

 

 

 

That is ridiculous!

SouthernSilveradoGuy85 Senior Enthusiast

SouthernSilveradoGuy85

Posted
Posted

Part of the problem is torque management for the transmission. It's to help the trans last from people wanting to hot rod around. There's also a small delay because the throttle is drive by wire instead of an actual cable connecting the pedal straight to the throttle body. Since buying my truck I put the Airaid M.I.T. tube and lately been filling up with mid-grade 89 octane and it does feel like the throttle response is better, but could be even better. A tune will help even better, but I don't think the AFM has anything to do with it. I've even had to stomp on it or at least give it a lot of gas while cruising in V4 and I felt a little something but wasn't violent or anything that doesn't feel normal and it switches instantly to me.

 

A mode selector between normal, sport, tow and eco would be nice. I just don't think it's enough of a need for that on a full size truck. Plus you can get a tuner where is has those modes.

GsBowtie Enthusiast

GsBowtie

Posted
Posted

I nearly didn't buy my 15 because of how the throttle response and Trans shifted during the test drive. GM needs to address this as these two things are very common complaints and it's competetors do not have these issues

  • 3 weeks later...
gmckeef Enthusiast

gmckeef

Posted
Posted

i put a sprint booster on my pickup took care of that problem. I went from a 15 6 speed to the new 8 speed, drove it for a day and put the sprint booster on the next day. According to our accessories guy it does not void any warranty ( I also sell gmcs). It's funny, I drive these trucks everyday and never hated it until I owned it lol

victorsdaddy Enthusiast

victorsdaddy

Posted
Posted

i put a sprint booster on my pickup took care of that problem. I went from a 15 6 speed to the new 8 speed, drove it for a day and put the sprint booster on the next day. According to our accessories guy it does not void any warranty ( I also sell gmcs). It's funny, I drive these trucks everyday and never hated it until I owned it lol

Sprint booster?

 

Sent from my Nexus 6P using Tapatalk

Colossus Senior Enthusiast

Colossus

Posted
Posted

You think its bad for you guys with the gassers.. my 12 Duramax has horrible turbo lag, especially when the A/C is on. My 08 Duramax was no where near as bad as my 12 :( I came very close to being T-Boned twice now because I couldn't get out of the way fast enough when it should have been able to.

SouthernSilveradoGuy85 Senior Enthusiast

SouthernSilveradoGuy85

Posted
Posted

You think its bad for you guys with the gassers.. my 12 Duramax has horrible turbo lag, especially when the A/C is on. My 08 Duramax was no where near as bad as my 12 :( I came very close to being T-Boned twice now because I couldn't get out of the way fast enough when it should have been able to.

 

If you want to go a step further, imagine a commercial truck. I've tried out trucking and done local driving in straight trucks. You have to be extra careful to look for idiots that think a 20 ton truck can stop like a Corvette. Hell even when I went to trucking school to get my CDL A people would still cut you off even though the "school" name was all over the big ass truck.

truckguy82 Senior Enthusiast

truckguy82

Posted
  • Author
Posted

wow, first time I tried turning off grade braking and traction control, throttle and shifting feel so much better

Archived

This topic is now archived and is closed to further replies.

Go to topic listing

  • Latest Articles

  • Posts

    • newdude
      Seems to be Missing a lot of Updates

      By newdude · Posted

      Based on what I can tell, yes.   As for updating it, its a mixed bag.  Updates do fix a lot of issues, but occasionally can create some oddities.  They do more good than harm though overall.     Here's what the most current one does and a  V171 Improvements Important: Improvements will vary by model, build configuration, system, and sales region. Not all vehicles have all features. OnStar and Wi-Fi may not work after remote start CarPlay may not automatically reconnect Part of the Driver Attention messaging screen may be in English even though the language is set to something else XM may not work After a dead 12V the radio may set to Arabic at each startup Bluetooth contacts might not be able to sync with the vehicle During an OTA the 12V battery may drain Customer might see a screen telling them to return to the dealer After changing the Wi-Fi SSID or password a device may not disconnect If a device is connected on the 2.4Ghz band, nothing will connect to the 5Ghz one, which could show as slow Wi-Fi speeds Customers might have noticed Wi-Fi dropping in certain areas and reconnecting later Customer might see the top of the screen blinking during Android Auto Android Auto may not connect CarPlay audio might momentarily cut out The "Add Phone" button may be grayed out The radio may not start up   V167 Most Notable Improvements:   Outside Air Temperature is incorrect. -You may see a popup message for Engine Shift. (Corvette Only) After changing the exhaust sound they get a popup that "mode change not applied", even though it was. -When changing volume, the volume bar is for Traffic instead of Audio. -(Corvette Only) Improvements to the placement of buttons and text. -If the customer receives the message "Apple CarPlay Could not connect", the cursor might move in the opposite direction than expected when using the control knob. -Android Auto automatically starts playing their music, even though they have turned that off in settings. -Intermittently they have a red OnStar LED with no OnStar function and/or no audio. -The minimum length of the Wi-Fi password was increased to 12 characters. -The popup message "Driver Attention Check, check your mirrors or Super Cruise will shut down" may not have come up on the display when it should have. -Startup animation added for 20th anniversary of the V-Series on Cadillacs. -The Navigation app received location improvements when going under long underpasses. -In the Navigation app there are filters for charging points that the vehicle cannot use.   V164 Most Notable Improvements Most notable improvements contained in this release may include: Apps Intermittently, an “SD Card Removed” message will pop up in the Navigation app. While in the audio app, the radio may stop working. Trailer Tire Pressure sensors may not be learned in the Trailer app. Not being able to return to the home screen while in the Camera app. After an ignition cycle, the radio might go to a black screen or stop working if using Sirius XM. Spotify icon truncated on Audio app.   SXM When changing power modes with the ignition switch, the HVAC pop up might appear. During startup, the radio will show the brand splash screen then go blank. Receiving a confirmation pop-up when changing drive modes. A “Return to Dealer” message may appear on the radio screen. SuperCruise setting toggle may not work. System After an ignition cycle, the radio might go black or stop working if using Sirius XM (SXM). Settings When performing a factory reset, the radio may stop working. After performing a factory reset, the radio may stop working when trying to switch users. When trying to go into the Language section quickly after startup, the radio may stop working. Projection Wireless CarPlay cannot be connected after unpairing another wireless Android Auto device. When the Android Auto screen comes up to connect wirelessly, the screen may freeze if the Cancel button is pressed. Removed the Apple CarPlay Cannot Connect screen when a device fails to pair during the autoconnect process. CarPlay information may not show up in the audio app. Near Field Communications (NFC) chime may be heard when NFC does not work. The Cannot Connect screen does not pop up after the first connection on wireless CarPlay fails. Apple CarPlay is now functional in Guam. Over the Air (OTA) When a software update is cancelled, the downloading logo may still be displayed. Energy When using the Energy app, the radio may stop working. When plugging in the vehicle, the display might show “Now” instead of “Charging Upon Plug In.” Instrument Cluster Voice recognition can be started while on an OnStar or phone call. When downloading contacts, there is a progress bar and circles on the Recents page of the cluster. The temperature on the cluster and the display may be different. After receiving and ending a call on the secondary paired phone, the cluster may get stuck on the phone menu. Bluetooth Intermittent Bluetooth connection loss.
    • AndrewF
      Front End Rattle

      By AndrewF · Posted

      Looking for help troubleshooting a metallic like front end rattle. Figured I’d see if anyone had thoughts before I schedule an appointment with the dealer.   The rattle is fairly loud and occurs primarily when the front driver side wheel hits a bump, even fairly minor road seams. Sometimes does it when the passenger hits a bump but I don’t believe when the rear hits. Rattle still occurs when foot is pressing brake peddle so I think that rules out the caliper rattle I’ve read about. I’ve also checked the running boards and they are tight.   Most noticeable at slow speeds.    Any insight is appreciated. 
    • KARNUT
      What did you do to your "other" car (aka musclecar) today

      By KARNUT · Posted

      We try to make cruise the coast. It’s where our favorite casino is. I only want to spectate. Never took a car. Always had one to take. I belonged to a club once. Even when I used to drag raced. It was during test and tune. Probably because I’m not a night owl, party person. 
    • RyanbabZ71
      What did you do to your "other" car (aka musclecar) today

      By RyanbabZ71 · Posted

      We had a pretty big cars and coffee in Indy this past weekend.  Pretty much anything and everything was there.  
    • Atlas
      What did you do to your "other" car (aka musclecar) today

      By Atlas · Posted

      Good looking Olds, and TRX!   I haven't been into car shows either. I'm probably not a convert but I did push myself this year to attend a few select events to challenge some assumptions and try to experience car-based social clubs in a different way. I joined up with the local Hagerty group for some cars/coffee events, group drives. A month ago I showed my '94 Camaro I rescued last fall at Radwood. Had a good time, but, there was some sitting around with the car and that's the part of shows I don't enjoy as much. I prefer to be a spectator, walk the show, grab a burger, go home.   Radwood was the only era-limited event, but where it had strict model year limitations, it made it up in variety. Having Jason Camissa there was also a hoot.   Where I see old 50's car shows, doo-wop and winga dinga music stuff fading out, same with "only" vintage muscle clubs, it seems to be the activity-based clubs/events which are gaining strong popularity. Places where all cars and interests come together.

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...