Type of fluid in 1991 Chevy S10 transmission (manual) and capacity "5 speed 4.3 V6"
270

Asked by therenow Jul 05, 2013 at 01:12 PM about the 1991 Chevrolet S-10 EL RWD

Question type: Maintenance & Repair

I didn't get the original service manual with this truck when purchased. After inspection, this trans. also has another service plug under starter which is an attached reservoir on the transmission. I've not seen one like this. It has 127,000 miles and has a small "whine" so I am going to replace?service the fluid. Also, what size Allen wrench fits the drain and fill plugs?

6 Answers
270

therenow answered 10 years ago

Thanks Js08016. It takes Dextron Automatic Transmission fluid. I found the Allen size. It's a 17mm and you can Purchase one from Oreilly's or Advance Auto Parts for around $20.00+ shipping. (IF anybody is interested)

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Hope answered 9 years ago

.I dont get how you said it was a manual and then said that you put automatic fluid in it...? did this work? seems wrong to me...?

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Guru9R526 answered 6 years ago

Will a 1991 Chevy S10 4.3 V6 transmission fix into a a 2004 GMC Sierra 4x4 with the 5.3 engine

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Guru9R526 answered 6 years ago

Will a 1991 Chevy S10 4.3 V6 transmission fix into a a 2004 GMC Sierra 4x4 with the 5.3 engine and both of them are automatic transmission

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Guru9R526 answered 6 years ago

Will a 1991 Chevy S10 4.3 V6 automatic transmission fix into a a 2004 GMC Sierra 4x4 with a automatic transmission with a 5.3 V8 engine and both of them vehicles are automatic transmission

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