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View Full Version : LLY p/s hose to exhaust manifold gasket contact


dmaxalliTech
12-08-2004, 19:54
You LLY guys, might take a look at your p/s hose near the drivers side exhaust manifold. I was made aware that there is some issues with theses rubbing and chaffing the p/s line. I dont know how widespread of a problem this is, but I wouldnt be suprised to see a recall come about.
Look at the upper left corner of the manifold and you can see what I am talking about.
http://gmdieseltech.com/lly4.bmp
Here is the manifold removed, notice the abrasion on the p/s line.
http://gmdieseltech.com/lly1.bmp
Here is the old and the new gasket compared, notice the new gasket on the bottom has a notch in the top left to clear the p/s line.
http://gmdieseltech.com/lly2.bmp
Here it is reassembled with the new gasket, lots of room now. I suppose one could just remove the corner of the gasket or bend it out of the way, but GM is instructing replacement of the gasket at this time. I suspect they are doing a field study on this.
http://gmdieseltech.com/lly3.bmp
Kennedy
12-09-2004, 04:52
Eric,

If you would, check your 2003 and any 2004 LB7's as well. May just be a product of the head change on the LLY, BUT I've seen fluid overflow while on the dyno with a 2004 LB7 as well as my LLY. This may be unrelated, but you never know. Seems to be the zinc (chrome) plated pumps. Could be just overfilling but...
mark45678
12-12-2004, 11:05
I just looked at my 2004.5 lly it cleared the tube but a good 1/8"??? lets hope thats one you have is the 1 in 10,000!
Kennedy
12-12-2004, 12:51
I looked at my 2005 and it is the newer notched gasket. Plenty of clearance.
Dave S
12-15-2004, 14:32
Mine is touching, I'll be cutting the corner off this weekend. Thanks for the heads-up!
Inspector
12-15-2004, 14:57
I told a friend at work who has an early lly and his was hitting the line. He cleared it and was wandering if GM will change the line if it is damaged. He says that there is a wear mark in the line.
Denny
WanaDmxsub
12-15-2004, 19:01
Originally posted by kennedy:
Eric,

If you would, check your 2003 and any 2004 LB7's as well. May just be a product of the head change on the LLY, BUT I've seen fluid overflow while on the dyno with a 2004 LB7 as well as my LLY. This may be unrelated, but you never know. Seems to be the zinc (chrome) plated pumps. Could be just overfilling but... My '04 LB7 has at least a .5" of clearance.