99 LM7 swap into an 05 4.3 V6 GMT800 Silverado
The following users liked this post:
prican_2000 (04-19-2018)
The following users liked this post:
prican_2000 (04-19-2018)
#24
Yep the date code is B239!
ok Great so I have the returnless rail on my intake, 1 less issue to deal with and I should be good to go on that front. So all I need now is just the harness and I can get this party started. Someone PM'd me last night about an 03 Harness so that might also be taken care of. Unfortunately, I will be too busy this weekend and the following so I will not be able to lay hands on it until the 1st wknd in May.
I will keep you guys posted.
#25
Good News Everyone following my post. I bought a complete 03+ Harness from a member here yesterday. hopefully he'll send out within the next couple of days. Fingers-Crossed that this will be the major road block on this conversion and its smooth sailing from here on to Start-up. just for ***** and giggles I have been comparing the 99-02 to 03-07 pin layout, not just for my sanity but so that I can be a lil smarter on the whole wiring schematics deal in case something else happens I can be somewhat prepared.
#26
100% Redneck
Good News Everyone following my post. I bought a complete 03+ Harness from a member here yesterday. hopefully he'll send out within the next couple of days. Fingers-Crossed that this will be the major road block on this conversion and its smooth sailing from here on to Start-up. just for ***** and giggles I have been comparing the 99-02 to 03-07 pin layout, not just for my sanity but so that I can be a lil smarter on the whole wiring schematics deal in case something else happens I can be somewhat prepared.
One more thing is the oil pressure sensor is also different between 99-02 and 03+. The 03+ oil sending unit is a three pin connector whereas the 99-02 has a single pin... I have the 03+ but need the 99-02 and you'll need the 03+ oil sending unit, dam thing (99-02) is $38 new
03+ three pin on my LQ9
#27
You didn't say if it's a van harness (DBC) or a 03+ drive by wire harness.
One more thing is the oil pressure sensor is also different between 99-02 and 03+. The 03+ oil sending unit is a three pin connector whereas the 99-02 has a single pin... I have the 03+ but need the 99-02 and you'll need the 03+ oil sending unit, dam thing (99-02) is $38 new
03+ three pin on my LQ9
One more thing is the oil pressure sensor is also different between 99-02 and 03+. The 03+ oil sending unit is a three pin connector whereas the 99-02 has a single pin... I have the 03+ but need the 99-02 and you'll need the 03+ oil sending unit, dam thing (99-02) is $38 new
03+ three pin on my LQ9
ohh and I also cleaned up the engine some, yesterday I received the cover. removed all the EGR "CRAP" looks much MUCH better without it. I am getting closer and closer.
#28
100% Redneck
Hey RedXray - Thanks for continuing to keep me posted on the differences of this swap. I wonder if the 4.3 Oil Pressure Sensor will swap out?? gonna have to check on that. Ohhh and the Harness is an 03+ "truck" harness that has been converted for DBC. It should be here today - hopefully I'll get some time sooner than later to remove old harness and install the new one.
ohh and I also cleaned up the engine some, yesterday I received the cover. removed all the EGR "CRAP" looks much MUCH better without it. I am getting closer and closer.
ohh and I also cleaned up the engine some, yesterday I received the cover. removed all the EGR "CRAP" looks much MUCH better without it. I am getting closer and closer.
#29
Update: I went on the Hot Rod Power Tour last week so the truck has been sitting waiting. Well yesterday I had some time after work so I was able to remove the old harness and installed the newer harness, I started plugging some of the plugs, injectors, Fuseblock in but I ran out of daylight so I will be out there tonight to give it some more time. I'm hoping to have 1st startup sometime before this weekend is over.
wish me luck.
wish me luck.
#30
Well guys (I know Xray warned me about this) but the Oil Pressure Sensor was the wrong one - I found out the hard way that I need the 3 Pin - so I have a new one on order. Now onto my current dilemma I have a few harnesses that I cannot for the life of me figure out what they plug into.
Now as a reminder the engine is an 99 LM7 and I had to use a Wiring harness from an 03+ Van (in order to keep it DBC) so I am thinking these are probably Van extra accessories harness that I don't have to worry about plugging in. Any help would be greatly appreciated. Also my other issues is that the O2 Sensor and O2 Harness are both Female Plugs - how are you guys fixing that issue? I have pics below - Thanks in advance for the help. I am hoping to have it fired up before the end of the weekend.
Harness plug back near the transmission - I don't know what it is or where it goes. HELP!
Harness plug near the Fuse block in the Engine compartment - I don't know what it is or where it goes. HELP.
How are you guys addressing the Female to Female O2 Sensor issue? I only plan on running the front O2 Sensors if that makes a difference.
Now as a reminder the engine is an 99 LM7 and I had to use a Wiring harness from an 03+ Van (in order to keep it DBC) so I am thinking these are probably Van extra accessories harness that I don't have to worry about plugging in. Any help would be greatly appreciated. Also my other issues is that the O2 Sensor and O2 Harness are both Female Plugs - how are you guys fixing that issue? I have pics below - Thanks in advance for the help. I am hoping to have it fired up before the end of the weekend.
Harness plug back near the transmission - I don't know what it is or where it goes. HELP!
Harness plug near the Fuse block in the Engine compartment - I don't know what it is or where it goes. HELP.
How are you guys addressing the Female to Female O2 Sensor issue? I only plan on running the front O2 Sensors if that makes a difference.