96 GMC Sonoma, did some research, found this..
https://www.youtube.com/watch?v=Yzdy5GZQF7g
Same engine it seems, but where the fuck do you put the oil?
this post was submitted on 11 Apr 2026
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I think its on the driver side next to the brake booster, between the booster and the engine near the firewall. Worst case Ontario you can fill it through it's dip stick hole.
Yeah the dipstick hole was gonna be my fallback idea too. But you’d have to be really patient!
No, what you're seeing in the photo is for the power steering fluid. We found the engine oil filler cap, it's on the passenger side, buried down in there. Its a shame it doesn't have the extended filler cap tube, but we got funnels, so no big deal.
You can probably buy the extended filler cap. They should just thread in where your current oil cap goes.
I was actually mistaken on that part, it does actually have a short extended filler cap, it's hiding under the air intake hose, and it's actually on the driver's side. My roommate and a friend found it while I was still sleeping on the couch, I was a little confused how my roommate explained the location to me, until I went downstairs to check for myself. Its definitely in an awkward to get to spot, but we got funnels, and it needed about 3/4 of a quart, topped off now. 👍
I wasn't talking about the power steering cap in the pic, I thought it was behind that closer to the firewall. In the drivers side like you said. Between the engine and the brake booster.
Yep, ultimately that's exactly where I found it. I guess part of the confusion came from the video I found. Sure, dude's video covered everything fairly well, but I think he said the one he was working on was a 98, we got a 96, so I guess GMC shuffled some parts around between those years. 🤷
At least we found it though 👍
I know it's a typo but "worst case Ontario" is absolutely becoming part of my lexicon
Its from Trailer Park Boys. The character of Ricky is full of gems like this.