I change the coolant every 30,000 miles. 06 trailblazer 4.2 4/4 reg. wheel base and has rear stereo and heat/ac controls 73,000 miles owned since new and i would like to know if and how to flush the heater core and should it be done? Just want to try and keep up on it. When i change the coolant i just drain rad. and refill with new 50/50 mix. I dont flush with water.
Also looking to put a block heater in any info on it good or bad?
Thank you for all the help possible.
Also looking to put a block heater in any info on it good or bad?
Thank you for all the help possible.