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

 

[SunlitComet]

and is it me or is your right headlight and driving light way out of alignment.

---------- Post added at 06:48 PM ---------- Previous post was at 06:40 PM ----------

in case you want to test the fuel pump control circuit.

(Base And Luxury) (Fuel Controls) 1998-2000 OBS

 

[_Dylan_]

the 98-00 pumps are expensive too

 

[noJeepshere]

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

Lol!

cent frum a smaert fone

---------- Post added at 05:58 PM ---------- Previous post was at 05:54 PM ----------

and is it me or is your right headlight and driving light way out of alignment.

---------- Post added at 06:48 PM ---------- Previous post was at 06:40 PM ----------

in case you want to test the fuel pump control circuit.

(Base And Luxury) (Fuel Controls) 1998-2000 OBS

Thanks for the diagram. And its just you, my headlight is fine, as is the driving light.

the 98-00 pumps are expensive too

No kidding, and this one only has 80k miles on it.

cent frum a smaert fone

 

[SunlitComet]

the 98-00 pumps are expensive too

are not. the delphi fg0089 for 98-2000 4dr 5.7l vortecs is only $137 at amazon.

---------- Post added at 11:06 PM ---------- Previous post was at 11:04 PM ----------

i would swear the right head light outer edge look like it is sticking out of the grill big time. form the photo it looks to be at least 1/2"+.

 

[noJeepshere]

It is. The style I bought stick out a bit and don't sit quite level. But the driving light is aimed correctly.

cent frum a smaert fone

 

[noJeepshere]

Got my fuel pump replaced, and had a shop service the aircon, found out that moisture has been collecting in the system somehow and can't be taken out for some reason. Something about a bladder that GM used with the R-134 refridgerant, I dunno. Anyhow, I now have a ticking time-bomb that could cause the compressor to fail and cost BIG bucks. In the meantime, I will drive it and use the A/C sparingly until I park it, then not worry about it until I get the sas done.

 

[96redsport]

Got my new rear armrest today. Install tomorrow!!

 

[SunlitComet]

Got my fuel pump replaced, and had a shop service the aircon, found out that moisture has been collecting in the system somehow and can't be taken out for some reason. Something about a bladder that GM used with the R-134 refridgerant, I dunno. Anyhow, I now have a ticking time-bomb that could cause the compressor to fail and cost BIG bucks. In the meantime, I will drive it and use the A/C sparingly until I park it, then not worry about it until I get the sas done.

bladder? think you mean the desiccant in the dryer.

discharge the system. replace drier and any lost oil. evacuate the system of any left over moisture and recharge. cheaper then having to do a compressor and complete flushing or coil cores too.

 

[Gzes]

Got my dash cover the other day and put in. Supposed to be cut for my hoe but doesnt fit right. Whatever i dont care it came off the silvi so im not complaining

 

[SunlitComet]

except for the tickets you are getting on it.