Missing Bolts?!?

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SFee330

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Hello All, I recently bought a 2019 Tahoe LT. I notice there was a noise on cold start from right side for only about 10-15 secs until the truck warmed up. I noticed a missing manifold bolt on the back right side that looks like the culprit/Exhaust leak (pic3). fingers crossed.... So then I started looking over the engine and I found a spot on left side that 6 bolts are missing (pic1). Can someone tell me what those are for. I'm guessing some sort of optional part? Also I seen one missing on the right side by the alternator. (pic2) . I'm just curious and still learning! I appreciate the feedback!
 

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Joseph Garcia

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Broken exhaust manifold bolts are common on there rigs. Dorman makes some fittings whereby you can do a repair job for these broken bolts (not bolt replacement).

The other bolt holes look to be for accessories that you do not have, but I'm just guessing here.
 

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