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Old 11-06-2018, 01:44 PM   #26
hatzie
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Re: Transfer case question: Manual vs Automatic

If you have a big round AUTO button at the top of the 4x4 control buttons it's an Autotrak transfer case. That's the one that takes the blue GM Smurf Blood.

Floor Stick and three button electric shift "2, 4H, & 4L" only are manual cases. The GMT800 chassis trucks with these cases used Dexron III... AC Delco 10-4033 / GM 88861900.
__________________
1959 M35A2 LDT465-1D SOLD
1967 Dodge W200 B383, NP420/NP201 SOLD
1969 Dodge Polara 500 B383, A833 SOLD
1972 Ford F250 FE390, NP435/NP205 SOLD
1976 Chevy K20, 6.5L, NV4500/NP208 SOLD
1986 M1008 CUCV SOLD
2000 GMC C2500, TD6.5L, NV4500
2005 Chevy Silverado LS 2500HD 6.0L 4L80E/NP263
2009 Impala SS LS4 V8


RTFM... GM Parts Books, GM Schematics, GM service manuals, and GM training materials...Please include at least the year and model in your threads. It'll be easier to answer your questions.
And please let us know if and how your repairs were successful.

Last edited by hatzie; 11-06-2018 at 02:39 PM.
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Old 11-06-2018, 10:09 PM   #27
jocko
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Re: Transfer case question: Manual vs Automatic

Wasn’t the auto t-case (that drinks the smurf blood) only available in 1/2 tons?
As hatzie helped me get my arms around, since Dex III is no longer produced and certified, DEX VI is the authorized auto trans fluid and Man Trans and T-case fluid 88861800 is recommended in the TSB for the t-case.
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Old 11-06-2018, 11:41 PM   #28
hatzie
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Re: Transfer case question: Manual vs Automatic

I believe they were available in the 3/4 ton SUVs too.
Probably not on the 3/4 ton pickups tho.
__________________
1959 M35A2 LDT465-1D SOLD
1967 Dodge W200 B383, NP420/NP201 SOLD
1969 Dodge Polara 500 B383, A833 SOLD
1972 Ford F250 FE390, NP435/NP205 SOLD
1976 Chevy K20, 6.5L, NV4500/NP208 SOLD
1986 M1008 CUCV SOLD
2000 GMC C2500, TD6.5L, NV4500
2005 Chevy Silverado LS 2500HD 6.0L 4L80E/NP263
2009 Impala SS LS4 V8


RTFM... GM Parts Books, GM Schematics, GM service manuals, and GM training materials...Please include at least the year and model in your threads. It'll be easier to answer your questions.
And please let us know if and how your repairs were successful.
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