[50andretired]

I bought here in Canada some time back a 2010 Acadia SLE AWD. Until now I wasn't aware that deep in my glove compartment was the original dealer sticker for my vehicle. It's a SLE with what called Preferred Group SLE 2. From the attached scan you can see I have something called "Rear Parking Assist". Is this the Ultrasonic parking assist?

If so I have never seen it work and cycling through the options in the Information Centre above the dash does not bring up anything that refers to it. I don't have the DIC buttons. Searching google for GMC Acadia parking sensors will bring up a bumper that looks like mine with fours sensors and there seems to be a non-sensor bumper also.

Is this just not turned on for some reason or "rear parking assist" is not what I think it is?

???

What I don't understand is the comment that you don't have DIC buttons. And in your signature you claim "Considering DIC"

If you don't have buttons how are you scrolling through the options?
Maybe the Canada models are different?

If you really want to dive into this project - then I think if you can find the wires going to the sensors you should be able to check them for voltage.
Of course you would need someone to put the vehicle in reverse with the brakes on close to a wall or something that should set off the sensors.
If there is no voltage going to the sensors then you know something North of there is wrong.
Like the previous poster said - the after market 7 pin might be the problem or part of the problem. Unplug it if you can and try it again.

Is there any possibility that this vehicle was a rental at one time? Even if the code is in the glovebox is there any possibility that a rental vehicle would have
that feature disabled? IDK.

IS there any possibility that you bought an extended warranty? I would think this would be covered under the bumper to bumper warranty.

OK I looked in my service manual and there is a Rear Object Alarm Module Scan Tool Information section.
There appears to be a Loudspeaker feed voltage output listed so maybe the system could be working but you can't hear it. ???
They also mention and "Inhibit" in the system status - so if that was tripped that could be the problem.
I'm going to assume that the dealer has this tool and could "look" to see if any history of why it's not working exists.

So It might come down to how bad you want this feature to work.
I don't know what else to tell you. Good luck.

 

[Nvr2loud]

What I don't understand is the comment that you don't have DIC buttons. And in your signature you claim "Considering DIC"

If you don't have buttons how are you scrolling through the options?
Maybe the Canada models are different?

The 2012 and earlier SLE and SLE-2 models did not have the (four) Enhanced DIC buttons (check mark, info, settings, ?) and only had the push button stalk in the instrument cluster. The stalk allowed drivers to reset messages and scroll through a very basic version of the DIC. It did not permit various settings to be changed (lights, sounds, ect) and did not display info such as individual tire pressure, fuel range, timer, fuel used.

Some of us have added those buttons to our SLE trim level Acadias and got all the functions unlocked.

 

[Nvr2loud]

The exception to this is if you have the V92 tow package and are hooked up using the 7 pin connector.
When the vehicle is started the "Park Assist off" appears everytime. You have to push a DIC button and then it will go away until the
next restart, as long as a trailer or the 7 pin plug has a connector in it. ;D

I wish... my 2012 with the V92 does not disable the Park Assist just because the trailer wiring is plugged in. My 2010 didn't either, and I always wished it had that very simple circuit installed... maybe it's a Canada thing :shrug:

 

[rbarrios]

mine will turn it off-- when I put my hitch cargo rack-- or bike rack.
the cargo rack has the plug for the lights..
the bike rack has not lights.

It appears the sensors pick up that there is an item very close and 'knows' the hitch is in use.
and turns it off.

 

[speleos]

I have an aftermarket 7 pin connector and transmission cooler installed about two weeks after purchase. Once again nothing appears in the DIC.

Good question ... ... Have you checked condition of all the fuses related to the trailer ... not just a visual inspection ... checked with an ohm meter?

 

[Nvr2loud]

mine will turn it off-- when I put my hitch cargo rack-- or bike rack.
the cargo rack has the plug for the lights..
the bike rack has not lights.

It appears the sensors pick up that there is an item very close and 'knows' the hitch is in use.
and turns it off.

Mine will do that too, if the carrier stays on the hitch and blocks the sensors (just like snow will) during forward and reverse it will turn off the park assist, with or without the plug installed. I just wish it would automatically disable the system just by plugging-in.

 

[50andretired]

Mine will do that too, if the carrier stays on the hitch and blocks the sensors (just like snow will) during forward and reverse it will turn off the park assist, with or without the plug installed. I just wish it would automatically disable the system just by plugging-in.

I assumed mine triggered the remote sensors off by plugging in the trailer plug especially because the nose of my trailer is
almost 3 feet from the bumper when hooked up. I have a cargo rack but have never used it. No lights. So one day I'll have to
hook that up and see if it disables the remote sensors.


Because RB and me both think plugging in the cable disables the sensors - I wonder if it could be different for the Canada models?
Being that most (not RB's) come from Lansing MI I don't see why they would change that on vehicles going to Canada.

Nvr2loud is it true that all vehicles in Canada must be wired so that the headlights CAN'T be turned off? ???
If so, that is different from USA models. :shrug:

 

[thomsonr]

Total guess is I have not looked at the wiring schematics (and haven't tried myself), but perhaps the aftermarket 7 pin connector is the cause. We see from that other thread, plugging something into the factory 7 pin disables rear park assist, so perhaps it is detecting a load and disabling it in both cases.

I had the Acadia for about one week before I put the trailer hitch on. I never saw any evidence of the rear parking assist. When I bought the vehicle I went through my manual and cycled through the limited DIC I have in the dash above the speedometer to understand how it works. There was no setting for parking assist.

 

[50andretired]

After rereading this post I wonder if this problem is related to SLE's

Guess we need to hear from someone with an SLE to see if their sensors work, and do they work when a trailer is
plugged in and disable the park assist, if equipped with the V92 tow package?

 

[thomsonr]

<snip>

Nvr2loud is it true that all vehicles in Canada must be wired so that the headlights CAN'T be turned off? ???
If so, that is different from USA models. :shrug:


Cars in Canada are required to have daylight running lights. I think most vehicles run the headlight at reduced voltage or have a secondary bulb or light. The newer vehicles have LEDS.

 

[Nvr2loud]

I assumed mine triggered the remote sensors off by plugging in the trailer plug especially because the nose of my trailer is
almost 3 feet from the bumper when hooked up. I have a cargo rack but have never used it. No lights. So one day I'll have to
hook that up and see if it disables the remote sensors.


Because RB and me both think plugging in the cable disables the sensors - I wonder if it could be different for the Canada models?
Being that most (not RB's) come from Lansing MI I don't see why they would change that on vehicles going to Canada.

Nvr2loud is it true that all vehicles in Canada must be wired so that the headlights CAN'T be turned off? ???
If so, that is different from USA models. :shrug:

DRL's are required by law in Ontario for all vehicles manufactured / imported after 1989. You can turn off your headlights, but the DRL's must be turned on if you do that.

 

[Nvr2loud]

After rereading this post I wonder if this problem is related to SLE's

Guess we need to hear from someone with an SLE to see if their sensors work, and do they work when a trailer is
plugged in and disable the park assist, if equipped with the V92 tow package?

Mine is an SLE, has factory V92 tow package, and does not automatically disable the park assist when I plug the trailer in. The park assist (regardless of trailer harness plug in or out) will disable if the sensors are blocked for long enough.

 

[Nvr2loud]

To answer the original question: yes you have rear park assist but for some reason it is not active. Either there is a defective component, unplugged or damaged wiring, or someone has turned it off. Since you didn't appear to have it working prior to the trailer hitch install, then perhaps the previous owner has turned the system off somehow.

Have you verified that all fuses are good? I suspect the rear park assist fuse is under the passenger side dashboard, but I don't know for sure.