CPS FAIL CODE 2004 S1500 4.3L

Asked by Aug 09, 2017 at 06:44 PM about the 2004 Chevrolet Silverado 1500 Short Bed 2WD

Question type: Maintenance & Repair

Replaced the distributor, CPS, CKP, MAF, new
plugs/wires, and even tried a new PCM. Truck will start
but, will barely run. P0341B code still comes up. I've not
on my scanner that the rpm will be 500 one second then
jump to 25,000. Yes, 25,000 that's not a misprint. Engine
obviously isn't revving that high. I'm at a loss.....Amy help
or ideas greatly appreciated.

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