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H3 Who programmed the cruise control?

Ghostbuster

Ghostbuster

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I'd like to talk to them.

I've had my alpha for a little over two years now and I've experienced this just about every time I hit the resume.

Today I'm driving on a 4 lane road at 45mph for about 5 miles so I set the cruise on 45mph.

As I approach a red light I tap on the brake pedal and begin to slow down, then the light turns green a second or two after I hit the brake, therefore I'm still going about 40mph. I hit the resume on the cruise control knob.

My trans drops a gear and then the 5.3l v8 revs to 3000rpm to get the H3 back up to 45mph from around 40mph.

Is this normal? I think it's a pretty ridiculous.


Stock alpha adv pkg. It has done it since I bought it with 47k miles.. Now at 66k

Not a huge deal but I just think it's kinda odd.
 
J

JPaul

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Way up north, UT
My 3.7 only drops gear if its already tried to smoothly accelerate. Its not often it drops down a gear.

Sent from my SM-N910T using Tapatalk
 
S

SedonaBound

Guest
Normal. I think that during the H3 years, GM was still working through the inventory of 8088 processors and 6k memory chip they got when they bought Hughes.
 
Last edited by a moderator:
J

JPaul

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Way up north, UT
4speedfunk said:
Cruise control at 40? Operator error.
Click to expand...

I use cruise control at lower speeds to help keep me from speeding and getting a ticket. I used to do the "drive fast" thing but ended up getting too angry at all the "slow people" getting in my way so I decided it wasn't worth it and go the speed limit now. Ok, maybe a few miles over the speed limit, but that's it. My road rage kicked in too often going any faster than that. I still have moments even now...
 
cbetts

cbetts

NERD!!!
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Rancho Palos Verdes, CA
JPaul said:
I use cruise control at lower speeds to help keep me from speeding and getting a ticket. I used to do the "drive fast" thing but ended up getting too angry at all the "slow people" getting in my way so I decided it wasn't worth it and go the speed limit now. Ok, maybe a few miles over the speed limit, but that's it. My road rage kicked in too often going any faster than that. I still have moments even now...
Click to expand...

It is good that you recognize your habits.

As far as the programming, yes, it tends to behave different than other cars. I hate using it in hilly areas mainly because it tends to overspeed once I hit a downhill section. Kinda like the unit is moves the pedal slowly.
 
USMC_315

USMC_315

Well-Known Member
Messages
590
Location
Northern VA
Ghostbuster said:
I'd like to talk to them.

I've had my alpha for a little over two years now and I've experienced this just about every time I hit the resume.

Today I'm driving on a 4 lane road at 45mph for about 5 miles so I set the cruise on 45mph.

As I approach a red light I tap on the brake pedal and begin to slow down, then the light turns green a second or two after I hit the brake, therefore I'm still going about 40mph. I hit the resume on the cruise control knob.

My trans drops a gear and then the 5.3l v8 revs to 3000rpm to get the H3 back up to 45mph from around 40mph.

Is this normal? I think it's a pretty ridiculous.


Stock alpha adv pkg. It has done it since I bought it with 47k miles.. Now at 66k

Not a huge deal but I just think it's kinda odd.
Click to expand...

Damn, in two years you went from 47k to 66k?! I went from 50k to 73k in the past 6 months :shame:
 
Last edited:
f5moab

f5moab

Mr. Beretta
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One reason why they tell you never to use cruise on slippery roads, the fact it could downshift. As to who programmed it, not one person was responsible. The person(s) would have relied on information relating to the trans gear at a given speed with no throttle, engine torque, etc.
 
0

08H3

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1,370
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I can't really comment on the downshift issue on the H3 (manual), but what you describe pretty much sounds like every GM cruise control dating back to at least the 80s. My Monte Carlos will drop from 4th to second. That can be a shock if you're not expecting it while tailgating the Prius in front of you.
 
amrg

amrg

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The 4L60 trans we have doesn't help either. The gear reduction is too spaced out and one obvious thing is how much the rpm drops when shifting first to second
 
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