GMC NP203

11 discussions on MotorsForum about the GMC NP203: what owners asked, what went wrong, and what fixed it.

What owners report

85 CJ-7 engine conversion

I have an 85 CJ-7 and want to swap the engine. I was thinking ofbuying a late 80's or early 90's chev 1/2 ton 4X4 with a V-8 in goodrunning condition and rusted out body and basically strippingeverything away as to make sure I still have an...

fulltime conversion to parttime.

I have a 74 Chevy 1/2 ton 4x4 with a fulltime front diff. I converted it topart time with a set of Warn hubs. The problem is with the hubs in "Free"position, the truck doesn't move. It feels like it wants to but does not.After putting the...

Update on KJ's truck/vibration problem

Thanks group. My truck is running, insured, and inspected. I howeverdo have a vague problem, so I will detail all that I know about it.1985' Chevrolet K5305CUI SB bowtie power plantTH700R4 transmission - used from a 1983 GMC JimmyNP203...

Update on KJ's truck/carb problem

Thanks group. My truck is running, insured, and inspected. I howeverdo have a vague problem, so I will detail all that I know about it.1985' Chevrolet K5305CUI SB bowtie power plantTH700R4 transmission - used from a 1983 GMC JimmyNP203...

1978 Chevy 4x4 1/2 ton

I was wondering, this truck is always in 4x4, there is no way to shift thetransfer case out of 4x4, I was wondering if there was a way I could disablethe 4x4 for better fuel economy without removing the driveshaft.thanks

Update on KJ's truck/vibration problem

Thanks group. My truck is running, insured, and inspected. I howeverdo have a vague problem, so I will detail all that I know about it.1985' Chevrolet K5305CUI SB bowtie power plantTH700R4 transmission - used from a 1983 GMC JimmyNP203...

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