Transmission fluid type 1980 GMC K2500 4X4

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MisterB

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Northwest
First Name
AJ
Truck Year
1980
Truck Model
GMC K2500 4X4
Engine Size
350
I just need to make sure I get the right transmission fluid for a drain and fill.

Thanks!

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1987 GMC Jimmy

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1987
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V1500 Jimmy
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Dexron III is spec. Any off brand equivalent or Dexron VI equivalent will do the trick. I just get the stuff from Walmart.
 

MisterB

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Location
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AJ
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1980
Truck Model
GMC K2500 4X4
Engine Size
350
Dexron III is spec. Any off brand equivalent or Dexron VI equivalent will do the trick. I just get the stuff from Walmart.
Cool. I went with some Valvoline Max Life that meets those specs

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AuroraGirl

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Taylor
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1978, 1980
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K10, K25
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400(?), 350
I mean, the ORIGINAL spec was probably DEXRON I or DEXRON II, but of course you can't buy those anymore (the whole its wrong to buy products with whales in them) but all DEXRON is backwards compatible. Same with ford MERCON
 

MisterB

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Location
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AJ
Truck Year
1980
Truck Model
GMC K2500 4X4
Engine Size
350
I just drained and filled the transmission. Put in a new filter and gasket. Old fluid looked nice and pink/red, but the truck likes this new fluid more. Shifts much smoother now.

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