RepairPal is your advocate for car care advice and guidance

Q: Changing Spark plugs and coils on 2004 Buick Rainier

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
Changing the spark plugs and boots on a 2004 Buick Rainier 4.2 Liter straight 6. Need to know how to get to the last two spark plugs. Also, how to get the coil into the boot without overforcing it.
No car image 94a1663db56199c5353592009e34aaa51078a2469bed068bb8d6f0ba43accf97
Get a Repair Estimate
Guaranteed by certified locations nationwide. Learn more
RepairPal estimates are guaranteed at over 1,700 quality certified locations nationwide. Learn more
There should be enough room under the windshield cowl to access the back two spark plugs. You will need the correct length extension to make it work. As far as I know you cannot replace only the coil boot - the coil and boot come together as one piece.
Didn't find what you were looking for?