U1510 code - active grill shutters?

DeePa · February 8, 2022

Hey all,

2017 Sierra with 128k.

I’ve had a u1510 code pop up today.

I don’t have the ability to scan what u1510 code, but I do have access to some live data. I found a list by tbarn of what possible codes live under u1510 and figured I’d start with the shutters as they are easy to view.

When running, I can view the active shutter command pct requested and current opening pct.

The truck will command them to 0 pct like once every twenty seconds but they never respond and just stay at 100 pct (open)

I took the shroud off over the hood latch and put dielectric grease on the connector and no change.

Are there more and more shutter failures happening?

Thanks all. Any info will be much appreciated.

newdude · February 8, 2022

Common. Fix is to replace the shutter assembly as the actuator/motor are non-replaceable parts. I would also inspect the plug for any corrosion inside it.

You made it further than some we've seen. Some have failed as low as 20-30K miles.

Edited February 8, 2022 by newdude

DeePa · February 9, 2022

Which plug? The one at the actual shutter motor itself?

Thanks for your help. I’ll get a new one ordered up. Sucks that I have to take the bumper off to get the grill off.

maybe it’s time to swap the grill to a color matched one. Been putting that off for a while. Just haven’t bit the bullet as they’re decent $$$.

DeePa · February 10, 2022

So I spent some time on this today.

water in the connector at the motor.

corrosion inside the motor at the pins from the connector to the circuit board.

I tried to open it up, clean it up, and reseal it, but code still persists.

looks like I’ll be heading to grab a new one. 360 cost at the dealer. Can get one GM delivered for about 300. 250 or so aftermarket ags1022 from summit. They have to be the same manufacturer.

oh well. If anyone has their grill off, take the half hour to pull the grill shutter off and di-electric that connector at the motor and up by the passenger headlight.

Doug G · March 14, 2022

2021 Elevation, and noticed my engine temp was a tick higher than normal, took a few days to figure out...shutters are closed all the time. 14,****** miles and 9 months old.

Guess they failed

Edited March 14, 2022 by Doug G