Last post on Jun 30, 2013 at 8:40 AM
You are in the Buick LaCrosse
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Buick LaCrosse, Sedan
Feb 05, 2011 (1:31 pm)
Is anyone else having problems with the 2010 Lacrosse CXS not downshifting when needed. When I slow down (usually up a slight grade) the car seems to loose power and not down shift when needed. This has gotten dangerous a couple of times when I needed to pick up speed and it just kind of sputtered.
I have had it into two Buick dealers shops and they both could not duplicate my problem and said nothing was wrong. It worries me especially if someone else would drive it and get into trouble. There is something wrong!!!!
#1410 of 2056 Re: Question about Bluetooth [bwia]
Feb 05, 2011 (7:11 pm)
The icon may only be indicated that you have bluetooth enabled on the phone. You need to check your menus for the connection to car which will likely show under info that it is not connected unless you have turned on at vehicle by starting or using accessory position.
Why are you leaving FOB in vehicle?
There is no phone in car except the OnStar and yes you can make calls on OnStar if you have minutes.
There was some issue that an update was supposed to correct with drawn down batteries. The programming was to minimize power draw and lean it even more after a few days of not starting.
#1411 of 2056 Re: OnStar vs. built in directions. [cooleydd]
Feb 05, 2011 (7:30 pm)
The phone works the same I believe. I have not even enabled onstar yet, but should just so I can check it out.
It does seem like a lot of duplication, sort of like wearing a belt with suspenders maybe?
I sure can not say the Nav system is totally accurate.
I believed that early onstar was a SAT system so you'd be able to place a call from almost anywhere unless you were in something such as a cave. The manuals of recent vehicles say it uses cell towers which is no advantage over your cell phone. The SAT system would be much more expensive on a per minute basis, but would overcome the difficulties of remote areas. Other than for voice, most communication would be accomplished by a quick burst of data and that should cost no or little more than current. Also nice to know that if I'm out of range of cells I could still get help or be located.
#1412 of 2056 Re: Down shifting [cooleydd]
Feb 05, 2011 (7:33 pm)
Does it respond when you push accelerator?
I too noted that it seems to bog to the point it feels like it might be on the verge of stumbling, misfire, something like that, before it downshifts on long upgrades.
How is your mileage?
#1413 of 2056 Re: Down shifting [e_net_rider]
Feb 06, 2011 (5:13 am)
When I keep pushing the accellator slory it does not respond. What I instinctly do is tramp on it and even then it seems to react slowly.
My mileage for mixed freeway and town driving runs between 18 and 19. Not sure what freeway only does - have not been on a trip for awhile. I am an easy driver - no fast starts, etc.
#1414 of 2056 Re: Down shifting [cooleydd]
Feb 06, 2011 (6:58 am)
how many miles on it? Were you ever getting the clang on start?
That mileage is not impressive except maybe in a bad way.
I too notice that it takes a lot of accelerator movement to see any significant response.
#1415 of 2056 Re: Down shifting [e_net_rider]
Feb 06, 2011 (7:17 am)
Seems like I was getting better mileage when it was newer - but not sure. Does not seem much difference if I use premium or regular fuel - Shell or Costco.
It IS a grat car except for the down shifting problem.
I really love it!!!!
#1416 of 2056 Re: Down shifting [cooleydd]
Feb 06, 2011 (8:46 am)
That is part of my issue, mileage better before 2500 miles. It seemed to drop suddenly and that was the mileage when I started getting the very loud metal on metal sound at the precise moment of start. Others had exhaust system changed for that and no one seems to know the exact issue although suspicions of something loose inside possibly creating a bad exhaust flow. I'm mentioning it the next time in and will post back if they change it. Also that was around the time I started noticing a slight weakness in mild acceleration.
I have run nothing but premium and it is Shell. I think I will fill with regular as a comparison.
BTW, Mobil 1 is supposedly the factory fill on this engine. I saw an ad for a distant dealer a week ago advertising the dexos oil change special and it said part synthetic. I changed mine just before that and used Purolator Pure One cross from PF63 filter since it was not available. Refilled with Mobil 1. Old oil looked really nasty for 22% life left and discovered factory filter was missing anti-drain back valve so there is a good chance I was getting dry starts and don't know how that might have effected issues. I just ordered oil test kit and saved the drained oil. I'll post results when it is done. So it seems there is a possibility that the loud clank I was hearing may have been from the VVT mechanism because oil drained from it while shut down. Until started the mechanism is locked to start position with pins. Since normal control is via oil, no oil present may have allowed it to bang against the chamber limit.
I keep my tire pressure very constant at the factory 35PSI for the GY 19" tires.
The vehicle has its good points but came from factory with too many mistakes. Hopefully I get all those worked off. But in my view there are also too many short comings for this to be luxury although you'd have to hunt hard to find vehicles this size with all of them.
BTW, I've heard rumors of a shift program update for this vehicle.
#1417 of 2056 Re: Down shifting [e_net_rider]
Feb 06, 2011 (9:25 am)
I was getting a clang at the instant my 2010 CXS started. It immediately went away when I switched to Shell 93 octane. Gas mileage improved as well.
My clang was intermittant and not dependent on ambient or engine temp.
Been gone two full months now
#1418 of 2056 Re: Question about Bluetooth [bwia]
Feb 06, 2011 (9:29 am)
The blue tooth icon just means yu have the service turned on in the phone menu. BT has about a 30 foot max range.
Why not just try it but you'll need two people. If it works the voice will just be heard in the car. My guess is that signal strength is not sufficient and car would need to be in "On" .