[rbarrios]

Im a little curious here... heres why....

On vacation- so Wednesday I changed my oil 'early' since I was bored.
Oil had 4010 miles.
I usually wait to around 50% OLM/5000 miles.
The following day I perform the Power steering fluid removal.
I drive to store and back. I only put 11 miles on the oil.
On Friday- I decide to take my Traverse into the dealer. Ive been getting a very random "Service Park Assist". I had info that some 2010 GM's that get this message randomly/intermitantly and set a particular BCM code- require a software patch to the module. I hand the service advisor that info.
And he says-- do you need an oil change? My reply--- "No-- I just changed it- its still showing 100%"

I Pick up the car about 3 hrs later....
I gas up and I drive the car some. soon its showing 99%------ hmmmmm odd.. I know i have not driven 100 miles...
Drove some more today... and when I saw it hit 98%- I switched to my TRIP B meter (I use it to track miles since last oil change)...
It only showed 121 miles since the oil change....
Now this is interesting-- because thats only 60 miles per 1% of the OLM.
DIC is showing 21.5 MPG... so it has not been idling in hot traffic-- not towing--- not going up a mtn--

Im keeping track of this-- I expect the OLM to hit 97% at 180 miles...
I KNOW my OLM dropped 1% for every 100 miles or so.

my log book shows
5th oil change- 4010.3 miles on oil- 61% OLM. 4010.3/39(OLM life used) =102.8 miles per 1% OLM
4th oil change- 5389.0 miles on oil- 47% OLM. 5389.0/53(OLM life used) =101.6 miles per 1% OLM
3rd oil change- 5503.3 miles on oil- 47% OLM. 5503.3/53(OLM life used) =103.8 miles per 1% OLM
2nd oil change- 5154.0 miles on oil-50% OLM. 5154.0/50(OLM life used) =103.0 miles per 1% OLM
1st oil change- 1657.0 miles on oil- 83% OLM. 1657.0/17(OLM life used) = 97.4 miles per 1% OLM

so for me to see 60 miles per 1% OLM--- right after I take it in for a software update- well that catches my attention.....
Ill keep posting updates.
My work order only shows the 1)Service park assist-- and 2)the order to air up my tires- as required by law (CARB- Calif- Air Resources Board).

heres the info on the Service Park Assists... my Traverse had the B0959 code stored. (Not related to the Service engine light).



Intermittent Service Park Assist Message


An intermittent Service Park Assist Message may display on the DIC of some of the following models equipped with RPO UD7 or UD5: 2010 SRX, CTS Wagon, Escalade models, Avalanche, Camaro, Equinox, Silverado, Traverse, Tahoe, Suburban, Enclave, Acadia, Sierra, Terrain, and Yukon models.

There may be one or more of the following DTCs stored in history: B0954 01, B0955 01, B0956 01, B0957 01, B0958 01, B0959 01, B0960 01, and/or B0961 01.

If, after normal diagnostics, the cause of the condition is not found, reprogram the Park Assist Control Module with an updated calibration currently available in TIS2WEB.

 

[quantum]

Yes, that seems completely normal to me.

I have always done a lot of research on Ford Diesel engines for my dad. It is not uncommon for dealers to reprogram PCMs when the come in for regular service. Its not that it is a recall, or anything, its just a matter of if it comes in, then we will update it.

Sometimes, if the motor company wants a particular reflash to be put on, they won't necessarily send out a message, but rather they will offer a "free oil change". Since most of the population will not turn down a free $40 (dealership price) oil change, they bring it in, and it gets reflashed.

My only fear about reflashes, is that sometimes they do some other tweaking. For instance, when a vehicle first hits the market, they try to tune everything for fuel mileage. Then later they MAY come along and do a reflash to address some harsh shifting, or so, and in the mean time those fuel saving techniques get written out of the programming. Now, I highly doubt that would happen with this minor reflash, because in my opinion this powertrain runs flawlessly.

It would be interesting for you to keep an eye on your fuel mileage. See if you notice any other slight changes, like high idle during cold engine start, etc.

I still have to go in for my seatbelt "recall", so I will see if they make that change on mine when I get it done. I haven't got the Service Park Assist message yet, but I may already have the update for that, because yours is a Spring Hill unit right?

 

[rbarrios]

yes spring hill unit.

Someone on one of the lambda forums had mentioned there was an updated algorithm for the OLM available.
I dont think he ever responded on whether it applied to 2010's.
But weve been watching the 2011's to see if they appear to have updated OLM's.
If mine does change differently-- then well know they are updating.

 

[jwhjr]

Has it been any colder than usual? The OLM goes down much faster here in MN during the winter than the summer.

 

[rbarrios]

nope--- we have alot of rain now- has not stopped since last week....-- but its the pineapple express--- so warm storm-- highs of about 60. lows of about 50.

its snowing--- above 9000 ft.
im in LA.

 

[AA/78U-Blue Gold]

What does the park assist control module do?

 

[rbarrios]

its the module thats part of the sensors on the bumper--- the ones that beep at you as youre getting closer to stuff when youre going in reverse.

 

[AA/78U-Blue Gold]

Thanks rbarrios ;D

 

[rbarrios]

more info.
Ive been keeping track of my OLM. I keep the OLM displayed. when I see it change- I take note of the mileage on the oil since its last change.
I currently am not back on my normal routine (rush hour every morning).. because of the holidays- my commute is taking me 25 minutes- when it normally takes me 40-50 minutes.
the freeway portion of my commute normally takes 35-40 minutes.. today 13 minutes.
Ive also been doing alot of freeway driving--- as shown by this tanks current 23.0 MPG as per the DIC.
Here is what im seeing so far.....
when the DIC changes to the following % I take note of TRIP B- which is my miles on oil- then subtract to get miles since last % change.
99%
98%-121 miles on oil. 60.5 miles per 1%
97%-244 miles on oil. 123 miles per 1%
96%-323 miles on oil. 79 miles per 1%
95%-446 miles on oil. 123 miles per 1%
94%-527 miles on oil. 81 miles per 1%

I did a little rush hour driing yesterday because of some car crash... but I cant tell if there has been a software update.
once averaged- im at about 88 miles per 1%...
but I think im going to have to keep taking notes to see where I stand.

 

[quantum]

Just changed the oil on my 2010 1LT Traverse tonight - and rotated the tires (first time).

OLM => 58%
Miles => 4393

104.5 miles per %

That includes about 100 miles of towing.

About 60% total highway miles and 40% city.

Didn't use any fancy jack or any fancy tools to lift the Traverse. Simply lifted by the triangle markings. Jacks didn't do any damage. Re-torqued wheels to 140lb-ft.

Ready for another 10,000 miles.

Current mileage on Traverse is 17,130km => 10,706 miles.

 

[rbarrios]

99%
98%-121 miles on oil. 60.5 miles per 1%
97%-244 miles on oil. 123 miles per 1%
96%-323 miles on oil. 79 miles per 1%
95%-446 miles on oil. 123 miles per 1%
94%-527 miles on oil. 81 miles per 1%
93%-645 miles on oil. 118 miles per 1%
92%-727 miles on oil. 82 miles per 1%
91%-850 miles on oil. 123 miles per 1%
90%-930 miles on oil. 80 miles per 1%
89%-1051 miles on oil. 121 miles per 1%
88%-1173 miles on oil. 122 miles per 1%

so far im now up to 97.75 miles per 1%.
guess its looking less and less like I did get an update. Though traffic has been pretty light. Im currently at 22 MPG on this current tank-as traffic has been free flowing on the highway. I have not been heavier traffic like I do other times.