What is the best way to change the spark plugs on a 2002 Chevy Trailblazer?

Question

Keep getting SES code P1345

Answer 1

Remove the front tires and work through the upper A arm holes.

Answer 2

Best way to go is to buy a manual from your local auto parts store for 13 bucks along with some spark plugs for that particular year and model, then head home and read up on it first..the manual will expain step by step how to go about it. Sometimes you need to use a dielectric grease on the plug wires. The plugs need to be set at a certain gap setting. They need to be tightened to a specific tourq. Plus possibly more, depending on the year, make and model. Dont be discouraged, there are just alot of details, Hope this helps.

Answer 3

Okay, spark plugs have nothing to do with that code. Does the engine run rough at idle?
Most likely you cam phaser is stuck. It is mounted on the front of the exhaust cam and controls cam timing.
Take it to a Chevy dealer. That is not something you want to change yourself as a slight slip of the timing chain while apart will require that the whole engine be dissassembled to correct.

Answer 4

P1345 is crank sensor/cam sensor correolation. This usually means there's a timing issue between the crank & cam, or a bad sensor.

Answer 5

One at a time. That way, you don't get the wires mixed up. The code is for something else. Don't know what.

Answer 6

Put a sparkplug tool on the plug - turn anticlockwise.
To fit new plugs reverse the turning.

Answer 7

use a ratchet and socket...