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GM Pump kit

kit GM12672028 was replaced by Kit GM12702459

Anyone know if the injector pump is different in new kit.
What is different in the kit?
 

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Did you hear anything on this?

It will be interesting to see if GM has just wholesale ignored the failure rate, damage to their reputation, etc. or if they actually have worked with Bosch to come up with a more robust replacement version of the CP4. Maybe a CP4.3?

Other than a general recall or highly subsidized/ incentivized replacement program, I hope that availability of something short of a CP3 and resultant requirement for a tune to make it work comes available. Its going to be painful to just do a direct replacement if or when mine gives up the ghost.
 

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GM Pump kit

kit GM12672028 was replaced by Kit GM12702459

Anyone know if the injector pump is different in new kit.
What is different in the kit?
It is supposed to be an updated pump, dubbed the "CP4.2". They still fail due to the design of the CP4. Your best bet is to do a CP3 conversion.
 

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It is supposed to be an updated pump, dubbed the "CP4.2". They still fail due to the design of the CP4. Your best bet is to do a CP3 conversion.
I thought the .1 and .2 denoted the number of cylinders in the pump and has nothing to do with revision number?

 
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