2003 Trailblazer Spark Plug Location. The sparkplugs are located in the cylinder heads three on each side. This Chevy Trailblazer had quite a few miles on it so we decided to change the spark plugs.
There are only two bolts. Underneath you will have an additional six covers not sure what theyre called that connect to the spark plugs. I installed new iridium spar.
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Compare 2003 Chevrolet Trailblazer Spark Plug brands. I cant get the miss out below 1 grand the car has a hard time idelin. The VECI label is in the engine compartment on the top radiator support firewall or near the strut towers. Check here for special coupons and promotions.
