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glockster19m t1_j6l5qng wrote

Helpers civic will be 19mm, Oldsmobile is likely 21mm, a half size may be needed as they could well be swollen

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GeigerCounterMinis t1_j6lg4z4 wrote

GM commonly uses 22mm

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TinOfCopenhagen t1_j6liwzw wrote

For the older trucks and SUVs it was an SAE size, however 22mm worked on then. Stuff from the past 10 years or newer I have no idea

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