23 ZL1 - "Service Supsension System"

WhiteMale · 03-23-2023, 06:49 AM

So ya I said just the other day that my car is (was) immaculate for build quality etc etc

Got the DIC message 5 minutes in to a in town drive, car rides choppy, definitely MRC is off or INOP. Cycling drive modes is inneffective. Suspension was locked to TOUR at the time.
DIC message persists this morning after sitting for 14 hours. And persists on 4 startups this AM. DIC msg displays at startup.

No CEL or other lights, performance is otherwise normal.

I will jack it up and check the ride sensors, the clips and connections at all four wheels.

Will also try a battery disconnect if I find nothing obvious under the car.

Nothing has happened to or with the car...OE ride height, etc etc

Changed the diff fluid about a month ago, was backed up on to ramps, no dyno action, and so forth. No reason that anything would have gotten damaged.

WhiteMale · 03-23-2023, 07:21 AM

OK I understand the module in the trunk, I'll check that, disconnect/reconnect if possible and it nothing found under the car.

I see no fuse diagram that clearly refers to the MRC?

WhiteMale · 03-23-2023, 05:27 PM

RR sensor had disconnected from the control arm. Removed the aero cover and threaded it back to the metal clip, made sure it was tight, put it back together. Every reason to think it just wasn’t tightened at the factory well enough.
No more service suspension system notice.

302crossram · 03-23-2023, 08:58 PM

when troubleshooting anything, I've always learned to check the simplest things first.

because it usually is... good find

03-23-2023, 06:49 AM	#1
WhiteMale Drives: 23 ZL1 A10 Rapid Blue Join Date: Aug 2020 Location: MO Posts: 1,990	23 ZL1 - "Service Supsension System" So ya I said just the other day that my car is (was) immaculate for build quality etc etc Got the DIC message 5 minutes in to a in town drive, car rides choppy, definitely MRC is off or INOP. Cycling drive modes is inneffective. Suspension was locked to TOUR at the time. DIC message persists this morning after sitting for 14 hours. And persists on 4 startups this AM. DIC msg displays at startup. No CEL or other lights, performance is otherwise normal. I will jack it up and check the ride sensors, the clips and connections at all four wheels. Will also try a battery disconnect if I find nothing obvious under the car. Nothing has happened to or with the car...OE ride height, etc etc Changed the diff fluid about a month ago, was backed up on to ramps, no dyno action, and so forth. No reason that anything would have gotten damaged. Last edited by WhiteMale; 03-23-2023 at 07:20 AM.

03-23-2023, 07:21 AM	#2
WhiteMale Drives: 23 ZL1 A10 Rapid Blue Join Date: Aug 2020 Location: MO Posts: 1,990	OK I understand the module in the trunk, I'll check that, disconnect/reconnect if possible and it nothing found under the car. I see no fuse diagram that clearly refers to the MRC?

03-23-2023, 05:27 PM	#3
WhiteMale Drives: 23 ZL1 A10 Rapid Blue Join Date: Aug 2020 Location: MO Posts: 1,990	RR sensor had disconnected from the control arm. Removed the aero cover and threaded it back to the metal clip, made sure it was tight, put it back together. Every reason to think it just wasn’t tightened at the factory well enough. No more service suspension system notice.

03-23-2023, 08:58 PM	#4
302crossram Drives: 2023 Sharkskin 2SS Join Date: Oct 2022 Location: NWFL Posts: 758	when troubleshooting anything, I've always learned to check the simplest things first. because it usually is... good find

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