Cruise control skipping Numbers - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

CAP'N B · 11-24-2010, 07:09 PM

I found that sometimes my cruise control will skip a number, today it wouldn't go to 64 it would do 63 & 65 but not 64. Then it wouldn't do 79 it would go to 78 & then 80, i had to speed to 79 and then set it after that it would go to 79. Anybody else have this happen to them or something to this effect.

csjcsj · 11-24-2010, 07:12 PM

I have noticed this before also, but after a few miles it will dial in on that 64 number! My question is the same as yours!!! WHY?????

KARBON · 01-05-2011, 12:23 PM

I'm having exact same problem ! We can't be the only one having this problem ?

DRG BSTN SQUIRREL · 01-05-2011, 10:25 PM

Same problem!

binlow84 · 01-06-2011, 05:24 PM

I've noticed it too, but it's really no big deal. The rare occasions when it happens I just cancel cruise control (turn it all the way off, not just hit the brakes) and reset and it corrects the problem.

LoneStar · 01-06-2011, 05:31 PM

I have the same thing happen, but I just contribute it to "rounding" to a whole number.

ffrcobra_65 · 01-06-2011, 05:58 PM

lol, mine did same til I realized it was the road. I tried it on a long flat stretch of road, no dips, hills,etc...just flat and was able to set it at any speed. even when I slowed down and resumed, I could see the reading go in correct increments

Nutbutt · 01-06-2011, 06:08 PM

AFblueSS · 01-06-2011, 06:35 PM

Do we need to inform GM so that they may issue a world-wide recall?

Mine runs 64 MPH no problem...

Steve Dallas · 01-06-2011, 06:36 PM

Never had a problem with it...

KeepItGreasey · 01-06-2011, 06:47 PM

Quote:

Originally Posted by AFblueSS

Do we need to inform GM so that they may issue a world-wide recall?

This is what happens when people try to make sense out of what their cars do. Cruise Control is computer controlled, right? Why is the computer skipping a number? It can get annoying if you enjoy Cruise Control and you use it a lot.

NASCR3 · 01-06-2011, 07:32 PM

Quote:

Originally Posted by LoneStarCamaro

I have the same thing happen, but I just contribute it to "rounding" to a whole number.

That is correct. Sometimes when we set the cruise you might between speeds say 63.5. Most cruise systems say that when you click up or down it is usually between 1 & 1.5 mph per click. I've been around the car business all my life, I've driven them all and it has been that way with almost every vehicle I've ever driven, GM, Ford, Honda, Porsche, BMW, Mercedes, Chrysler etc. It's not an exact science. Which is why I always tend stay 1 to 2 mph below where I know my local police tend to cut their "grace period" at.

John

fastball · 01-06-2011, 08:13 PM

Electronic gauges will do that. Always have, always will. I learned to to drive on my Grandfather's 1985 Eldorado with electronic gauges, and when you accelerated it always skipped numbers. It has alot to do with your rate of acceleration. Digital gauges will never cycle though every digit, even though while accelerating you do hit that specific speed.

It's a time correction algorithm in the software that converts the speed in analog, real time from the ground speed sensor (usually in the transmission) to a digital instant speed. Analog speedometers don't need that because the needle just sweeps right through from one mile per hour to two, three, 4, etc.... and as it sweeps it covers every incremental speed within one mph, from 1 to 1.999999999999999999999999999999999999999999999999 9999999999999999999999999999999999999999 ^ x power

Graph it out as a limit function in calculus..... the line as it approaches 2 will never actually HIT the number two.

If digital speedometers didn't have that in the program you'd need a digital display that defines speed infinitely..... the whole interior would be one huge gigantic electronic speedometer

LoneStar · 01-06-2011, 08:31 PM

Quote:

Originally Posted by NASCR3

That is correct. Sometimes when we set the cruise you might between speeds say 63.5. Most cruise systems say that when you click up or down it is usually between 1 & 1.5 mph per click. I've been around the car business all my life, I've driven them all and it has been that way with almost every vehicle I've ever driven, GM, Ford, Honda, Porsche, BMW, Mercedes, Chrysler etc. It's not an exact science. Which is why I always tend stay 1 to 2 mph below where I know my local police tend to cut their "grace period" at.

John

That's what I thought. That's why I didn't consider it a "problem".

11-24-2010, 07:09 PM	#1
CAP'N B Cajun Mariner Drives: 10 Camaro SS/RS 15 Camaro Z/82 AGM Join Date: Mar 2010 Location: Real Cajun,Golden Meadow, LA. Posts: 673 View My Garage	Cruise control skipping Numbers I found that sometimes my cruise control will skip a number, today it wouldn't go to 64 it would do 63 & 65 but not 64. Then it wouldn't do 79 it would go to 78 & then 80, i had to speed to 79 and then set it after that it would go to 79. Anybody else have this happen to them or something to this effect. __________________ '10 Camaro 2SS/RS Red Jewel VVTLS3/A6 '15Camaro Z/28* Ashen Gray*

11-24-2010, 07:12 PM	#2
csjcsj Drives: 2010 Camaro SS/RS 6spd Join Date: Sep 2009 Location: Jefferson, Ga Posts: 4,399 View My Garage	I have noticed this before also, but after a few miles it will dial in on that 64 number! My question is the same as yours!!! WHY????? __________________

01-06-2011, 05:24 PM	#5
binlow84 Drives: '10 Camaro, IBM 2LT/RS Join Date: Jun 2009 Location: St. Louis metro, Illinois Posts: 350 View My Garage	I've noticed it too, but it's really no big deal. The rare occasions when it happens I just cancel cruise control (turn it all the way off, not just hit the brakes) and reset and it corrects the problem. __________________ [Insert obligatory car/order info below] 2LT RS; Imperial Blue Metallic w/ Silver Rally Stripes; Gray Leather Interior; Automatic; Exterior Painted Interior Trim Panels; Blue LED Footwell Lighting; Dash ABL; DRL Halos Ordered - 1/16/10 at Weber Chevrolet in Granite City, IL (Excellent experience; Thanks John!) Produced - 2/24/10 In the driveway - 3/4/10 Total time order to delivery - 47 days

01-06-2011, 06:08 PM	#8
Nutbutt Drives: 2011 RJT 2LT/RS Convertible Join Date: Nov 2009 Location: Western Massachusetts Posts: 3,381 View My Garage	__________________ 1st IPF Supercharged 2011 2LT/RS RJT Convertible

01-06-2011, 06:35 PM	#9
AFblueSS U.S.A.F. Retired Drives: Imperial Blue 2010 Camaro 1SS / 6MT Join Date: Jun 2010 Location: Pensacola, Florida Posts: 202	OMFG! Do we need to inform GM so that they may issue a world-wide recall? Mine runs 64 MPH no problem... __________________ Current Mods: Muffler delete (straight pipes with stock tips), K&N Panel Filter, light blue pin stripes around Silver OEM Rally Stripes.

01-05-2011, 12:23 PM	#3
KARBON Drives: 2010 CAMARO 850 RWHP/733 RWTQ Join Date: Sep 2010 Location: Lafayette,LA Posts: 300 View My Garage	I'm having exact same problem ! We can't be the only one having this problem ?

01-05-2011, 10:25 PM	#4
DRG BSTN SQUIRREL Drives: 2011 Camaro 2SS Join Date: May 2010 Location: Topeka, Ks Posts: 187 View My Garage	Same problem!

01-06-2011, 05:31 PM	#6
LoneStar Drives: 2011 IOM Camaro Join Date: Jul 2010 Location: Texas Posts: 3,446	I have the same thing happen, but I just contribute it to "rounding" to a whole number.

01-06-2011, 05:58 PM	#7
ffrcobra_65 Account Suspended Drives: SuperCharged 2SS/RS IOM MN6 Join Date: May 2009 Location: CA Posts: 5,094	lol, mine did same til I realized it was the road. I tried it on a long flat stretch of road, no dips, hills,etc...just flat and was able to set it at any speed. even when I slowed down and resumed, I could see the reading go in correct increments

01-06-2011, 06:36 PM	#10
Steve Dallas Commits weekly crime Drives: 2017 Camaro 1LT Join Date: Nov 2009 Location: Camano Island, WA Posts: 9,513 View My Garage	Never had a problem with it... __________________ 2017 Camaro 1LT - Blue Barchetta IV I fire up the willing engine, responding with a roar. Tires spitting gravel I commit my weekly crime.

01-06-2011, 08:13 PM	#13
fastball Banned Drives: 2017 Camaro 2SS 6MT Join Date: Aug 2006 Location: Cleveland, Ohio Posts: 4,372	Electronic gauges will do that. Always have, always will. I learned to to drive on my Grandfather's 1985 Eldorado with electronic gauges, and when you accelerated it always skipped numbers. It has alot to do with your rate of acceleration. Digital gauges will never cycle though every digit, even though while accelerating you do hit that specific speed. It's a time correction algorithm in the software that converts the speed in analog, real time from the ground speed sensor (usually in the transmission) to a digital instant speed. Analog speedometers don't need that because the needle just sweeps right through from one mile per hour to two, three, 4, etc.... and as it sweeps it covers every incremental speed within one mph, from 1 to 1.999999999999999999999999999999999999999999999999 9999999999999999999999999999999999999999 ^ x power Graph it out as a limit function in calculus..... the line as it approaches 2 will never actually HIT the number two. If digital speedometers didn't have that in the program you'd need a digital display that defines speed infinitely..... the whole interior would be one huge gigantic electronic speedometer

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