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Discussion Starter #1
Wondering if anyone has had a problem with one of these , not running on all cylinders , did some test show that one injector isn't firing . anyone have this problem. had injectors replaced allready.
 

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If carried to the service dealer, they hook and test that up first, to make sure that the injector pops off at the right time, then they check each one. Also, for the home guy, a pyrometer (digital point and shoot) can take the temp of each cylindar, cooler cylindar whould indicate a possible no fire.
 

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Discussion Starter #3
chevy dealer is taking truck apart noow think it might be a loose wire on injector, cannot find anything else wrong ?????
 

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Is it the #2 or #7 injector not firing? If so, its in the injector wiring to those cylinders. The connectors dont make proper contact. Something to do with too much tension on the harness. There is a retrofit kit from GM that addresses this issue.
 

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Discussion Starter #6
just got word from the dealer they found a broken electrical wire off the injector, the terminal post broke ,1100.00 to install new injector, injectors were replaced 75000 miles ago. ::damnit
 
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