Following information was found by a Google search on 12 July 2008. The posting was made on 8-8-2006 to a user forum at forums.trailvoy.com
here are GM's specifications for spark plug gap for 2002 trailvoys. what year and model is your truck?
~2002 Envoy & TrailBlazer 2WD & 4WD~
Spark Plug Torque 18 N.m Spark Plug Gap 1.27 mm Spark Plug Type AC 41-965 Spark Plug 17-23 N.m
***Updated my own posting after working on my Trailblazer***
The 18 NM torque is stamped onto the top of the engine, visible after removing the air box.
i have not found specs. make sure they are firm.
specification on gapping spark plugs for 2006 chevy cobalt
14
13 ft lbs
The torque specification is 13 foot pounds or 130 inch pounds for the spark plugs on a 2007 dodge caravan 3.3 liter
None, It is commonly believed that 22ft/lb is the torque for all spark plugs but this is incorrect
When the plugs are finger tight, tighten them with a ratchet 1/16 of a turn.
Good and tight, but don't break the thing.
How do you change the spark plugs on a 2002 chavy trailblazer
Haynes book says 13 foot pounds
Where are the spark plugs on a trailblazer
Torque the spark plugs to 11 lb/ft.