Which axle type do I have?

[Jamie Parker]

Hi,

My GMT400 is 1998 C3500 SRW 6.5TD, I'm pretty sure it's fitted with a GM 14 bolt with a 4.1:1 ratio.

Its currently has an open diff and I'm looking to fit a TrueTrac but there are three available for the 14 bolt.


1. How can I tell (ideally without pulling the rear end apart) if it is a C-Clip design or not?

2. How can I identify which pads and shoes are fitted to my truck? (I am in England so getting parts isn't as simple as I'd like).

3. Can the info be found from the RPO codes on the glove box label below?

1GCGC33F9YF488834 168.5 CC30943

AM7 A52 B85 B96 CMD C6U C60 DE2 E63 FLT GT5
JB8 KNP K60 L65 MT1 NF2 NG1 R04 R6D TFD UM7
UQ5 VCB VK3 VP6 VQ2 VXS V27 V43 V73 XHH X88
YD3 YD6 YHH ZHH ZY1 1SA 1SZ 26I 26V 39U 6XD
7XD
BC/CC U 9792



Thanks

 

[Biggershaft96]

Semi float had c clips, full float does not

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