99 Tahoe advice

[Skools Out]

ferm would this kit fix Stinks and mine as well? mine does it slightly time to time, it's a 99 as well...

http://transgoonline.com/products.ph...dcountview=Yes

[THEFERMANATOR]

Originally Posted by Skools Out

ferm would this kit fix Stinks and mine as well? mine does it slightly time to time, it's a 99 as well...

http://transgoonline.com/products.ph...dcountview=Yes

That's teh SK kit which is a good kit for daily drivers. If you tow alot or want really crisp shifts go with the HD2 kit. Also chances are your seperator plate will be WELL worn where the checkballs seat against it. The TRANSGO plate is a hardened plate and holds up a bit better than teh stock one does. The SK kit is designed for the professional, so the directions may not be that clear to follow for the average DIY who isn't real familiar with how a valve body works. The HD2 kit is a drop in kit with good directions, and you can buy a video for it as well. And being you both have 99's, the accumlator piston in the valve body should be swapped out for an aluminum one(GM put a plastic one in it, and they stick and crack which will cause a pressure bleed off).

[Skools Out]

took mine to the trans shop today they said they would rebuild the valve body, replace all solenoids, and add shift kit, plus service it for $385

[Stinky_Hooker]

OK, took it to a good mechanic to get it scanned. Found a few codes that shouldnt have anything to do with what its doing..minor stuff. He drove it and felt the shudder and talked about seals at the convertor that probably needed to be replaced when I did the convertor that could be allowing blowby and fluid getting past? Ferm this make any sense to you? Around the input shaft?

[Skools Out]

stink it's the valve body, that fixed mine, just need your valve body rebuilt.

[Stinky_Hooker]

Im taking in to the tranny guy next, just wondering, never heard of this.

[THEFERMANATOR]

Did he tell you what the codes were? I need to know what the P code numbers were to tell you what they might mean. And the codes for a 99 5.7L are HORRIBLE for telling you what the problem actually is. RARELY have I seen them throw a code for a bad O2, the ywill normally throw a misfire code when an O2 sensor fails. If there was a P1870 code in it, then the valve body needs to be done first before you go any furthur.

[ssiredfish]

Originally Posted by THEFERMANATOR

Did he tell you what the codes were? I need to know what the P code numbers were to tell you what they might mean. And the codes for a 99 5.7L are HORRIBLE for telling you what the problem actually is. RARELY have I seen them throw a code for a bad O2, the ywill normally throw a misfire code when an O2 sensor fails. If there was a P1870 code in it, then the valve body needs to be done first before you go any furthur.

Best thing we ever did was buy one of those code computers. At $50 a read it doesnt take long to pay for itself......

[Stinky_Hooker]

There were no Pcodes. Its was low effeciency through caty convertors which he said was waaay before I started having problems, a fuel level sensor (which I knew, cause my fuel gauge doesnt work) thats it. I was hoping for a trans code but nothing.

I only took it to him cause he is really honest and wanted to see A: if there were trans codes and B: if it may have been an engine issue before concluding it was the tranny, which it obviously is. He gave me the # to a tranny guy he trusts and Im going to call him this afternoon when I get off work (left the number at home). If they work tommorrow I may run it by today, if not Monday. I been driving it in 3rd only 40 MPH or so to keep the shudder down to hopefully not cause any damage. I only drive 5 miles to work each way. No driving it otherwise.

[THEFERMANATOR]

Originally Posted by Stinky_Hooker

There were no Pcodes. Its was low effeciency through caty convertors which he said was waaay before I started having problems, a fuel level sensor (which I knew, cause my fuel gauge doesnt work) thats it. I was hoping for a trans code but nothing.

I only took it to him cause he is really honest and wanted to see A: if there were trans codes and B: if it may have been an engine issue before concluding it was the tranny, which it obviously is. He gave me the # to a tranny guy he trusts and Im going to call him this afternoon when I get off work (left the number at home). If they work tommorrow I may run it by today, if not Monday. I been driving it in 3rd only 40 MPH or so to keep the shudder down to hopefully not cause any damage. I only drive 5 miles to work each way. No driving it otherwise.

The 2 conditions you describe would have both been a P code. The ECM reads out trouble codes for the powertrain(engine/trans) as P or powertrain codes. The cat efficiency code can EASLIY cause the problem you describe from it as I have SEEN it happen on 99 5.7's. This is why I said we needed to know what the P codes were to go off of, and NOT to trust the diagnostic trouble codes given for this engine as most of teh time they can lead you on a wild goose chase if your not familiar with the system. As for seals on teh input shaft, I find it HIGHLY unlikely the teflon seals have gone bad unless somebody pulled the trans apart and put it back together dry with a sledge hammer. Since the late 80's GM has used teflon sealing rings and they are VERY resiliant and hardly ever need changing even during a rebuild.

I haven't ever used one of these, but I have read good things about this for the P1870 repair for alot less money. Supposedly it will work better in valve bodies that are severely worn that the tRANSGO kit won't fix.
http://www.teckpak-fitzall.com/spgm.cfm?id=A74741Q