front SIR sensors 1990 vette

[Mike Daniels]

Is there any danger in setting off the airbag if I try to clean these sensors to attempt to get the infl rest light to go off in my 90?

[c4c5specialist]

HI there,
No, just remember, disconnect your negative battery for 15 mins prior to it.
Then, remove, clean and lubricate with a little dieelectric grease.
Allthebest, c4c5

[Big-Tom]

Do I need to sand the metal in the little hole in the insulator in the picture or just the ears where the bolts go?

[c4c5specialist]

HI there,

Normally, I will sand both tabs and also the contacts at the frame. I will use Scotchbrite pads on the bolt heads themselves.

ALSO< DO NOT REUSE THE STAR WASHERS.

We have had issues with them and GM NO LONGER recommends them.

Make sure your torque on the fasteners is correct.

Allthebest, c4c5

[Big-Tom]

ARRRGH! I knew that I should not have put it back together...lol. What should I use in place of the Star washers?
In your experience will I need to clean up the W/W side also?
I have not replaced the battery yet so I don't know if this side did the trick..

[c4c5specialist]

Hi there,

You only use the bolts themselves, that is all, no washers.

Also, just clean the bolts and the tabs, you should be just fine.

Allthebest, c4c5