1988 gmc fluid types?

d61562

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wv
thats what i thought but a few people have told me i have to use a special gm fluid
 

d61562

Thread starter
Messages
6
Location
wv
if anyone knows for sure please let me know i just bought this truck and i want to change fluids
 
Messages
7
Location
Illinois
My 1998 k1500 calls for dex III in the transfer case, I think they used the same t-case during that time span. I changed mine out last fall so far no problems. Sorry cant help you on the tranny I have an auto.
 
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New England
Originally Posted By: d61562
thats what i thought but a few people have told me i have to use a special gm fluid
Special fluid is usually with the Autotrac units (with Auto 4WD option) which I don't think was available in 1988.
 
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