I need instructions on how to do a compression test on cylinder #2 , I think that I should remove fuel pump relay fuse, remove all spark plugs then crank engine 5 strokes am I right?
Appreciate it sir, I'll get my grandson to turn it over.That sounds right. Crank using a jumper wire at the starter relay instead of using the ignition switch. Hold the throttle open or remove it.
Appreciate it sir!This Site arguably has the BEST Step By Step outlined as follows:
How To Test Engine Compression (2002-2009 4.2L Chevrolet TrailBlazer, GMC Envoy)
troubleshootmyvehicle.com