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

[SunlitComet]

Weld in. In order to make the headers Cali legal I must use the included crossover pipes and the instructions state that the piping in front of the cats must be cut 1 inch forward of the the cats to mount and weld the slip fit/3 bolt flange adapters. So I figured why waste another $250(new assembly is price dropped lately to $570 for Cali converts and the weld in's cost me $320 for the pair.) for the ss piping in front of the cats when it will just be cut off anyway. The header parts are steel, the converter are SS and the the rear converter flange is steal. They have held up well over the years as fare as metal deterioration is concerned. If anything I will replace the old 1 foot section of pipe between the steel flange and the converter for the left bank with aluminized steel. The right bank converter is just butted up against the flange anyway. I believe there is about 3 inches of pipe available on either side of the cats so some wiggle room in there for mounting. Just like what is used in the cat back system. Should have no issues at all. Tho I need to get a missing hangar replaced that is not available from U.S. dealers anymore. Will have to junkyard it I guess.

 

[SunlitComet]

Found this a few days ago when looking in to possible electrical gremlins regarding starting to running mode issues. It is the fuel pump relay. Replaced but will need to look into the fuel pump ground point as well. Have had the odd issue since the 411 pcm swap. Will see over the next week how things improve. Did some similar plastic deformation to the socket terminal it sat on as well.

 

[Monstar_est87]

Hummmm... Looks like its got heated up pretty good... I have sumthing similar going on with the a/c fan speed selector where the connection is made to that black dial thingy in the back on the hvac where it connects to the harness...

 

[gpracer1]

Just installed some rear airbags.......no more saggy azs when towing the travel trailer.

 

[SunlitComet]

Hummmm... Looks like its got heated up pretty good... I have sumthing similar going on with the a/c fan speed selector where the connection is made to that black dial thingy in the back on the hvac where it connects to the harness...

GM has replacement pigtails becuase of that. You can get them on amazon.

---------- Post added at 05:19 PM ---------- Previous post was at 05:17 PM ----------

Just installed some rear airbags.......no more saggy azs when towing the travel trailer.

I put in firestone rid-rite bags a while ago to get the rear back up till I get around to deciding what to do with the rear springs. I love them. I still want to get the compressor and automatic levelling system too.

---------- Post added at 05:20 PM ---------- Previous post was at 05:19 PM ----------

GP, when are you gonna let me look at your cuurent tune file? Or is it to remain your trademark secret?

 

[Monstar_est87]

GM has replacement pigtails becuase of that. You can get them on amazon.

Say wat..? Ill have to search for a part # and a diagram... I wonder where I can find that information... Ummm..? I've only taken a dash off once at the junk yard and the wiring back there is tied uplike one fat harness...

P.S. This happen yesterday...

Pulled over and chased her down, but I was too late...

 

[Gzes]

That sucks bro. Didnt do anythijg to mine vlbut got an axle

 

[rolfsent]

So I finally got the Yukon into the frame shop to get a estimate on the rust and it can be fixed for $500 so I pulled the trigger. She goes in Wednesday and gets to go on to live another day.

 

[SunlitComet]

Say wat..? Ill have to search for a part # and a diagram... I wonder where I can find that information... Ummm..? I've only taken a dash off once at the junk yard and the wiring back there is tied uplike one fat harness...

P.S. This happen yesterday...


Pulled over and chased her down, but I was too late...

http://www.amazon.com/ACDelco-PT1346-Female-8-Way-Connector/dp/B000C9TZBY/

And chased who down? How did you get a cap damaged that was recessed in the wheel?

---------- Post added at 07:56 PM ---------- Previous post was at 07:55 PM ----------

So I finally got the Yukon into the frame shop to get a estimate on the rust and it can be fixed for $500 so I pulled the trigger. She goes in Wednesday and gets to go on to live another day.

I definitely want more before and after pics.

 

[Monstar_est87]

My center cap, She came loose... I never saw it coming... Havent touched the caps in months... I suspect that sum1 might have tampered with them... And thank u for the link...

 

[YukonCountOnMe]

How do you post pics off an iPhone?????

 

[rolfsent]

Got sick of looking at the rust on my roof so I sanded it down and laid on some primer. Just need to get it painted now.

 

[gpracer1]

GM has replacement pigtails becuase of that. You can get them on amazon.

---------- Post added at 05:19 PM ---------- Previous post was at 05:17 PM ----------



I put in firestone rid-rite bags a while ago to get the rear back up till I get around to deciding what to do with the rear springs. I love them. I still want to get the compressor and automatic levelling system too.

---------- Post added at 05:20 PM ---------- Previous post was at 05:19 PM ----------


GP, when are you gonna let me look at your cuurent tune file? Or is it to remain your trademark secret?

Sorry man, I'm in mexico on the beach. Just towed the 7000 lb beast.......P0327 knock sensor code.....

 

[t3amcha0s]

installed denali center console and vacuumed it!

 

[Monstar_est87]

Got my center cap replacement in the mail 2day..! Installed it real tight like... Once again I'm making the streets look fresh to def...

 

[SunlitComet]

Ordered one of two new belt pulleys. My idle and tensioner pulley bearings are a bit loose and noisy. K&N filter recharge kit. Has not been cleaned in at least 2 years.

 

[TahoeLimited]

R&R'ed the heater core valve doohickey...the vacuum operated valve that I assume opens/closes the coolant flow to the heater core...in line with the hoses to/from the heater core, directly above the passenger upper control arm. I noticed it was leaking a bit yesterday. So I drive it to Advance Auto Parts (~0.7 miles from the house) to show them what I need. I grab it to give the person a better look and I immediately break one of the plastic male hose connectors, spewing coolant. Fortunately, it was only warm and didn't scald me. That plastic piece isn't too sturdy! Fortunately, they had one in stock for $12, so I r&r'ed it on the spot.

HOWEVER...they informed me that I should have the orange (Dex Cool) type of coolant in my system, which it does not (has the green). They told me the green can corrode the heater core and cause problems with the water pump as well. Is this true? If so, I should flush out the green stuff and use the orange.

---------- Post added at 02:59 PM ---------- Previous post was at 02:58 PM ----------

Okay, so after the above post, I do some quick online research, and saw other discussion forums talking of how the Dex Cool has been known to cause heater core/water pump problems. Bottom line - I topped off my system with regular ol' green Peak. Prior to doing so, I looked down, and the radiator internals couldn't look healthier.

 

[_Dylan_]

Dexcool or green are fine, just don't mix them.

The bad thing with dex is that people tend to never change it. It must be changed every couple of years or it goes bad and causes problems. Regular green stuff lasts longer and won't cause problems if you let it go for 10 years.

Parts monkey was just trying to help. Gotta remember half the people that walk in don't know what the make/model of their car is.

 

[SunlitComet]

Dexcool is sensitive to any contamination of coolants and even air.

 

[Dowsewashere]

Yeah i just run basic green coolant and my temp never goes over 210