finally received my injectors from gm after waiting 3 weeks for them so i was able to do the injector swap. everything went well, overall not too bad a job. trucks not smokin anymore and running excellent. i have plenty of heat and the coolant level is staying right where it should after bleeding the system several times. it seems as though the coolant system isn't building pressure but as i said the level is staying where it should. oil level is also good. anyone seen this before? could there still be an air pocket somewhere?...i did pull the drain plugs on the block as well in order to change out all of the coolant. again this is an 01 lb7. any help appreciated.
thanx
-Dave