Service 4wd light on a 2005 blazer zr2 ?
S10 you said clearly. NO BOX told at all, of 3 or more.
post that transfer case is there, ?
some are part ,time only for offroad only.
how to shift, steps (in dirt best)
keyoff, stop engine
key on shift to 4hi 4wd not 4 Low, 2speed version .
now start engine.
see if that works.?
got 3 switch NP1 box or NP233c box. (part time 4wd offroad only()
or 4 switch NP8 box, np236' is not full time !!! it too is part time.
not sure what box is there me, ever, only RPO and rear tag on box tells me what is there.
NP# is RPO code off your cars RPO list
Is the transfer box dry, the pumps love to wear a hole in the case and leaks dry, did it?
quote the 236 pages (wobble eats out case)
A problem associated with the NP236 transfer case is input and or output bearing wobble wearing out the case. The case material is magnesium which can build up heat in the unit causing failure of range fork and range hub, we recommend that these items be replaced during the rebuild cycle. The NP236 is also susceptible to problems caused by running the NP236 transfer case on hard surfaces like concrete or asphalt. Run 4WD only on loose dirt, snow, mud, sand or grass as the different wheel speeds in turns can put excessive torque loads on clutch, chain and sprockets.
join a real; GM forum , tell them your vin and this allows RPO to be pulled up and your transfer case, is now known, if still OEM stock.
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