Intermittent suspension light

high mileage · Mar 28, 2026

2010 Denali 6.2. has the z55 suspension with an intermittent light for the right rear shock. I plan to check wiring and apply deoxit to the connector, but can these be repaired or do they have to be replaced?

Joseph Garcia · Mar 30, 2026

What is the code that you are receiving?

No, they cannot be repaired, at least by you.

Big Mama · Mar 30, 2026

I had that connector come loose somehow but as @Joseph Garcia said it may be time for new ones.

high mileage · Apr 1, 2026

Fless · Apr 1, 2026

Perhaps you mean C0590? If so, here's the description and diagnostic path. Confirm that I selected the correct vehicle or navigate to the code page for yours.

C0590 — 2010 GMC Yukon Denali AWD V8-6.2L Service Manual | Operation CHARM

Detailed repair manual for the 2010 GMC Yukon Denali AWD V8-6.2L.

charm.li

Intermittent suspension light

high mileage

TYF Newbie

Joseph Garcia

Elite Member

Big Mama

Full Access Member

high mileage

TYF Newbie

Fless

C0590 — 2010 GMC Yukon Denali AWD V8-6.2L Service Manual | Operation CHARM

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