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I recently bought a (Gen 3) LQ4. I'm trying to swap this into an (Gen 4) 07' Silverado which uses 58x Reluctor, 4x Cam Gear, Front Timing Cover/Crank Sensor, and 2 Knock Sensors located in the sides of the block. I have a (Gen 4) Truck, So the timing cover/ crank sensor/ knock sensors can be used. I also have a (Gen 4) ECM/Harness. I know I need to get 58x Reluctor Gear put on & get a 4x cam gear already My questions are as follows: 1. Can I put a 4x Cam Gear on a (Gen 3 Cam) ? or do I need to get a (Gen 4 Cam) for the (Gen 4 Cam Gear) to work ? 2. Can I use the (Gen 4 Knock sensors) on the side of the (Gen 3 LQ4) ? Just drill/tap & mount them ? 3. If I keep the (Gen 4 Fuel Setup) could I just install that on the (Gen 3 LQ4) ? Any help or advice will be appreciated. I'll be documenting everything so others will have better knowledge when putting a Gen 3 Block into a Gen 4 Vehicle. Thanks guys !
Need help with possible electrical hookup
Dazedswift posted a question in Ask the GM TechnicianHello! To whomever may have any advice. I recently bought a 2005 gmc single cab with a 6.0 4l80e that wouldn’t start unless you put a little fuel down the intake and jump the starter(which I didn’t do bc I’d rather fix the problem logically). Anyways so a problem that I found is that he had actually broken the ignition interlock cable on the steering column and you were actually able to turn the key by hand but turning it to the start position wouldn’t do anything other than a like if you would say meh out loud that’s literally what the engine or I believe the electrical would sound like when you turned the key into that position. So I replaced the wire from a donor steering column which was a PAIN!!! anyways I have the original column in with the new wire but it’s still not trying to start at all. I also noticed that the throttle body doesn’t open when you press the Gas and you can’t push it open. It also makes a small humming noise like it wants to try to open and slightly vibrates. Also so I jumped the 87 pin on the starter relay to the positive and the engine turns over but won’t fire and start. I’m assuming that it’s a fuel problem(yes I put fuel in the tank today 7gals). So my next theory is going to maybe test the starter? I’m not really educated on this stuff but I do have the tools for the most part. Any advice would be appreciated. ALSO it has a newer ignition Solenoid and it has the lock and car light on the dash so I’m not sure if the new keys have to be programmed and that has anything to do with it? Maybe? But I’m not sure and thank you again! I’ll post a link to a YouTube video tomorrow to show exactly what’s going on and what I’m working with for a visual!
I'll start by saying ive been searching this site for years. Great data base! Today is the first time ive needed My own thread, sadly. So, here goes after searching since 10pm lastnight across all platforms. Please accept my gratitude for even reading this post! ____________________________________________ 2003 GMC Sierra 1500HD - Quadrasteer SLE Ive been loosing fuel pumps back to back for the last 6+ months. They lose pressure and i start getting random missfire. Before putting in my fourth pump and lighting the fuse to number five. I decided to go after all the grounds on the truck clean them up and attmept to see if its a fator. I moved a 1/0 ground that is for a stereo i never even use. This 1/0 ground was to body and on its own top post. I moved it to frame -cause?? Maybe?? IDK. All grounds were done the same. Remove, clean rings and mounts to clean bear metals, dielectric greased well and remounted in factory locations. Two at alternator bracket Four at body mount below drivers door Checked single behind passenger side head to harness at intake, fine left alone. Didnt touch factory negative to block- (yet) Went to start truck to pull further into garage and close door as the GD mosquitos were coming in. Fuel pump started to cycle and all hell broke loose!!! Relay started buzzing LOUD could near feel the flutter. Never attempted to start it. Cycled it off to on and relay just flipped out no fuel cycle at all. Attempted to start - nothing- no attmept to crank at all. Removed frame to batt ground, no change. Died a little inside but didnt raid the liquor cabinet. Pulled starter relay and attmepted to get a crank, nothing.... Notations: The TB butterfly seams to be clamping down -loud- at key on. Headlight auto settings are doing a different pattern off at key off, come back on in a few moments, then turn off when the relay kills the full truck. However never paid attention to their normal operation just know they never binked off on berfore. Not sure if OBD port is dead. Tuner not turning on but it never did till truck was running before. Been using it as a code reader/monitor up till this point. So, as of this moment no codes read.. Any ideas?