What did you do to your OBS GMT400 Tahoe/Yukon Today?

[SunlitComet]

swap the two 0411 pcm's around.

 

[retorq]

Pull the header heat shield off, broke a while ago and makes a weird rattling noise every now and them. Did a flush and oil change, greased ball joints and rod ends. Also had a spark plug wire resting on the header, burned thru, moved it for now, much better lol. New plugs, cap, rotor and wires will be up soon.

 

[xanatost]

Changed the needles on my gages.

 

[Phantom240]

What needles did you go with?

 

[xanatost]

I went with these: http://tahoeyukonforum.com/forum/showthread.php?t=50949 and what a diffrents they have made!! I love it. 1000x better than OEM!!! If anyone gets a chance to switch them out I would say do it!!

 

[noJeepshere]

I suspect the fuel pump.

cent frum a smaert fone

 

[Yukon420SEL]

^ idle positioning censor, and fuel pump.... did it just cut off and not start back up?

 

[_Dylan_]

Pull some spark plug boots off, jam a screwdriver in them, and check for spark by placing it about 1/4" away from something metal. If you have spark you will see it grounding out to the metal.

You can check for fuel pressure by pushing down on the schrader valve on the fuel line on the back of the intake. If you have fuel pressure gas will squirt out. Can you hear the pump running?

 

[SunlitComet]

I suspect the fuel pump.

cent frum a smaert fone

nevertheless i fine looking picture even if i do say so myself.

 

[noJeepshere]

Can't hear the pump at all and it still has spark. Just shut off like I turned the key and nothing after that.

cent frum a smaert fone