Poor throttle response noticed in emergency

DanMan_S · July 7, 2016

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.

truckguy82 · July 7, 2016

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 · July 7, 2016

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 · July 7, 2016

Wow, cool video, thanks.

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

DanMan_S · July 7, 2016

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 · July 7, 2016

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 · July 7, 2016

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 · July 9, 2016

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

victorsdaddy · July 27, 2016

I have same issue, it almost seems to redline before taking off

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gmckeef · July 28, 2016

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 · July 29, 2016

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?

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gmckeef · July 29, 2016

Sprint booster?

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https://www.sprintboostersales.com/detail.cfm?year=2007&year_end=2015&make=GMC&model=Sierra&engine=Gas

Colossus · July 31, 2016

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 · July 31, 2016

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.