Cruise control - Page 6

Terpnut · #76 (**permalink**) 09-21-04, 11:11 AM

Quote:

Originally Posted by mack1a

This experience leads me to believe that any quality discussions on this topic are ambiguous. How can you determine whether or not a vehicle conforms to specifications and functional characteristics when they aren’t documented and the latest specification is the average of the set of vehicles you use for reference. Remember, the way to attain high quality measurements is to set low expectations.

Remember in my situation, after realizing that their SRX CC does not work to specs and as documented, Cadillac retreated to their final line of defense, essentially: "The user manual specifically states that all vehicle functions are subject to change and may not work exactly as printed". Remember this next time your A/C or power steering fails--basically GM never promises that anything will work. Can you believe this attitude?

:madtalkin

Samboosa · #77 (**permalink**) 09-22-04, 09:09 AM

so after i got my car back i thought i'd test the cruise control and see.

- drove at 60km/h
- set cruise
- accelerated using the cc accelerate/resume button
- while the resume button still pressed and when i reached 90km/h i pressed the set cruise
- speed went to like 88km/h and stopped

however i did notice the downshifts and all that crazy rpm going up and down but ONLY at low speeds (40km/h (25mph) - 60km/h(37mph)).

Harrison256 · #78 (**permalink**) 09-22-04, 10:12 AM

Quote:

Originally Posted by John Caddy

I guess this is a real Coke/Pepsi issue - but for me the turnstalk cruise screams "Grand Am" or "Cavalier" while the steering wheel mounts are much more "Cadillac."

Perhaps if I drank more hot tea I'd have the necessary pinkie-finger dexterity this cheap Pontiac Sunfire turnstalk version requires (since I want to keep both hands on the wheel)? Maybe I'd appreciate it more? ... hmmm ... let me think ... NOT.

Oh well, to each his own.

Hmm, nice thinking but lets take a look at that... It looks Grand Am if it has it on the stick but looks professional or nice to have it on the steering wheel? Well my friends 1995 Bronco has it on the steering wheel, my friends 1999 Ford F-150 has it on the wheel as well... Now on the other hand... A 2002-04 Cadillac Escalade has it on the stalk, a 2001 Porsche 911 has it on the stalk... So the porsche and the Caddy are the Grand Ams and the Fords are not? Hmm

Terpnut · #79 (**permalink**) 09-22-04, 05:16 PM

Quote:

Originally Posted by Samboosa

so after i got my car back i thought i'd test the cruise control and see.

1. drove at 60km/h
2. set cruise
3. accelerated using the cc accelerate/resume button
4. while the resume button still pressed and when i reached 90km/h i pressed the set cruise
5. speed went to like 88km/h and stopped

however i did notice the downshifts and all that crazy rpm going up and down but ONLY at low speeds (40km/h (25mph) - 60km/h(37mph)).

IF you are trying to duplicate my problem, then your step 3 is incorrect. You do not accelerate using the CC's slide switch/button, you must accelerate using the accelerator pedal/throttle. Then hit "set" at the higher speed. This is what does not work on earlier SRX production models.

Johnz · #80 (**permalink**) 09-22-04, 06:28 PM

I have a Trail Blazer for a loaner and the cruise works the same way

mack1a · #81 (**permalink**) 09-22-04, 08:46 PM

By the same way, do you mean that when you use the accelerste buttion it hesitates/actually lags for 1 or 2 seconds, ten over-accelerates or surges then backs off anywhere fron 2 to 5 MPH after you set to a new speed.

That is how the V8 SRX works. That is because the CC module is calibrated to run with the 6 cylinder engine. As Samboosa stated, the faster you go the closer it comes to performing correctly because the differences in throttle requirement between the 6 and 8 are starting to diminish.

Bottom line is just poor engineering. The new STS V8 works very well (as good as a DTS). I did find out that it is a different part number. Although, the service manager didn't think they would interchange as the STS is vastly different. Hell, after driving one and looking at the body panel fit I could have told him that.

Terpnut · #82 (**permalink**) 09-23-04, 12:28 PM

Quote:

Originally Posted by Johnz

I have a Trail Blazer for a loaner and the cruise works the same way

Interesting, since I had an '04 Trailblazer loaner a few months back, and I believe it worked perfectly.

Johnz · #83 (**permalink**) 09-23-04, 01:33 PM

Quote:

Originally Posted by Terpnut

Interesting, since I had an '04 Trailblazer loaner a few months back, and I believe it worked perfectly.

Hmmmmmmmmmmmmm....................

mack1a · #84 (**permalink**) 09-23-04, 01:38 PM

That could be. Cadillac can sometimes match up a CC module and a power plant to work smoothly as evidenced by the DTS and the new STS. I see no reason why Chevrolet can't do it also.

Samboosa · #85 (**permalink**) 09-24-04, 08:24 AM

Quote:

Originally Posted by Terpnut

IF you are trying to duplicate my problem, then your step 3 is incorrect. You do not accelerate using the CC's slide switch/button, you must accelerate using the accelerator pedal/throttle. Then hit "set" at the higher speed. This is what does not work on earlier SRX production models.

I did that too. It works the same way.

Actually I have realised that if I don't remove my foot off the accelerator quickly and keep it for a second or 2 after setting the cc speed it actually keeps the correct speed without dropping down.

And the crazy downshifts do not happen all the time. I noticed it twice only on non-flat roads. It's like it downshifts to maintain the speed as you climb a bit in the road. Since it only happens when driving at lower speeds the downshifts only happen when the rpm is very low.

mack1a · #86 (**permalink**) 10-01-04, 11:34 PM

I took the SRX back to get the dealer to look at the CC again. I said that while it was OK with me to use other SRXes to prove that my CC was operating consistent with other SRXes I also wanted them to compare its' peration with a Deville, and an a STS.

Of course it didn't do well compared to Cadillacs and the service manager agreed that I should be dissastified. They wrote up a dealer trouble report (don't know if that means anything but it is something I can follow up on.

Recommend others who know a working CC from a now working CC also do the same and refer to the already existing DTR.

Samboosa · #87 (**permalink**) 10-03-04, 04:52 AM

I don't think they will use a different part for the CC for the overseas. It must be the same. From reading the posts at least I think mine doesn't need to be reset to set a new speed.

Samboosa · #88 (**permalink**) 10-26-04, 02:31 PM

Now this is going to sound a bit odd.

Today my cruise control is actually FORCING setting the new speed when I use the CC button to accelerate.

It just sits there at the new speed without me pressing the Set Speed button!

mack1a · #89 (**permalink**) 10-26-04, 03:47 PM

Actually, that sounds better that how it is supposed to operate. Don't complain about this one because they will "fix" it nd you'll be back to the original problems.

Just a clarification on one other thing. When I mentioned a different CC module I was refering to the fact that there would be differences in throttle requirements between a 6 and 8 cylinder engine. I think that my main complaint is that the over throttling and overspeeding seems to indicate that there is a systemic mis-match between the CC and the wan it manages the engine.