Joetib07

used cruise control for the first time the other day and it seems to be not staying engaged in 6th or 7th gear, I was only traveling around 60-65mph, seems to work in all the other gears but when I go into 6th and push the set button the cruise light turns green but then once I take my foot off the throttle then the light turns back to white and deactivates, same with 7th. I'm hoping it's something stupid, any suggestions? Thanks guys

Larry/car

I have never used my cruise control I those higher gears either. I will have to check mine out.

Joetib07

Thanks, hopefully it's just a Chevy thing

Silverboost

Is your car tuned?

Joetib07

Yes

mxk

What happens if you engage cruise control in 4th or 5th, then shift up?

Translator

If I recall correctly, her is supercharged?

Joetib07

when the cruise is on and I shift from 5th to 6th it will shut off, the cruise symbol will be displayed but turn from green to white

Joetib07

My car was just recently tuned and has a procharger on it, along with the cruise acting up my low engine oil add oil light is on, I'm thinking something went wrong when the shop did the tune.

Bill Dearborn

My car is pure stock and the cruise works just fine. I have used it in 4th, 5th and 6th gears. There is a minimum speed at which it will not engage but I am not sure exactly what the speed is. Previous GM cars that I owned had a minimum speed around 30 mph.

Each time you disengage the clutch the cruise will shut off and has to be resumed in the next gear.

Bill

Joetib07

Yea I can't see how the tune would have affected the cruise control, I haven't had a chance to try engaging it in 6th over 60mph so yea maybe there's a threshold that it wont engage if it senses speed and rpm are too low.

Bill Dearborn

I know it works well below 60. I use it in traffic in the upper 30s. It works well using the up and down buttons to adjust speed to traffic. Much finer adjusting than moving your foot up and down on the throttle.

Bill

Silverboost

I have heard of a problem with cruise and being tuned especially with a speed density tune. It can be fixed.

Higgs Boson

My guess is the torque model has been altered (incorrectly) and cruise is thinking its not making enough torque to stay engaged.

Lots of systems (everything) have a look and take a bite out of the torque model between the gas pedal and the rear wheels. Cruise control, air conditioning, etc all need a properly calibrated torque model to work right.

DoubleDown

My M7 car is supercharged and tuned. Cruise control works in all 7 gears. Definitely have your tune checked out.

fleming23

Sorry to bump an old thread, did you ever figure out the torque management issue limiting cruise control in 6th and 7th gears? I have the same issue currently on a tuned 2016 Z06.

Avanti

Didn't notice how old this thread is... disregard.