Service parking assist? edit: not solved after all

[clogan2]

Today I got a recurring (3 different times) message on the little screen on the dash, above the steering wheel: "Service Park Assist". The message was proceeded by a short beep/alarm. All three times came in a row, while stopped at three consecutive red lights, after having been parked in a level asphalt lot, on a cloudless, 60°F day. Each time, I cleared the message the normal way by depressing the check mark on the right thumb button of the steering wheel. The Tahoe was carrying me, the wife, and our 8-year-old granddaughter, with no other significant cargo.

This has happened before, in very rare instances, ever since I've owned it. I've always ignored it in the past. Finally thought I'd ask about it. 2016 Tahoe, LTZ, 145,000 miles, 100% stock. My parking assist sensors appear to be working fine.

Any clues/ideas?

 

[Joseph Garcia]

How did you test the sensors to confirm that they 'appear to be working fine'?

Do you have access to a quality bi-directional scanner? The scanner will give you information on the source of the issue, and if it is sensor related, it will tell you which sensor is causing the issue.

 

[clogan2]

Never mind; had a dead battery yesterday. With a new battery, the messages stopped...(Until next time I suppose). I'm guessing the persistent messages were a warning of the imminent battery failure. I've noticed this on my Tahoe, my Vette, and even on my motorcycle: whenever I start getting strange messages from the info system, a battery failure soon follows. And a battery replacement cures it.

Anyhow, I have never "tested" the parking assist system, except to observe that it seems to always be working as it should.

Edit to add:
It's now 30 days later, and the messages are back. Happened 3 times yesterday; all while stopped at red lights .
Puzzling

 

[Loki223]

Modern vehicles are very insistent on quality batteries in good shape. dying batteries can lead to a lot of weird situations.

 

[clogan2]

It's back again. Happened 3 times yesterday, all while stopped at red light.
Puzzling.

 

[RoadTrip]

It could be the connectors to the modules, or the module itself, or the bumper sensors, or the connectors to any of the sensors themselves.

Start with the freebies: Slide under there and open each connector and check for corrosion and plug them back in.

As for me, I add a little lube before I reconnect wire plugs, especially ones as exposed ss these.

It usually turns out to be bad connections or a shorted bumper sensor.