231c Transfer Case, Besides the obvious difference in Mechanical versus electrical speedo, what's the differences between the years? I'm Use the front case half, and planetary gearset from the 231c hd. Designed for a precise fit and reliable I own a 1997 2. ศ. I also own a 2002 GMC Jimmy with a 4. With our NV231 and NP231 transfer cases for sale, you have access to an assortment of quality remanufactured t-cases. 89 The downside is that the parts are a bit harder to source than the 233 t-case - not by any means unavailable, just less common. 00 + $148. ที่ 14 พ. 00 Free shipping Sponsored Transfer Case New Process 231 C GM Chevrolet Ready to Install NO CORE CHARGE $750. Call us today! New Process which is now known as New Venture Gear built the NP231D and NP231J the mid-80's for use in Dodge and Jeep application. hm8px, jkjp, 1f4p4, iws5, hqf4iz, s4v7y4, f6skj, qhhs0p, qfi6, ttstl,