Tranny swap done, caused a problem plz help

Allright, on my 1994 Z71 I took out the automatic and dropped in a 5 speed manual. It was pretty easy since the donor truck i had was the same year, so everything just bolted right up. NOW THE PROBLEM---- for some reason when i am driving the engine sputtered and died twice now, i found out that the ECM fuse was blown, both times. What would make it do that? ALSO-- for some reason the brake light fuse keeps blowing too, I checked all the wiring i had undone and its not damaged and is put back together tight and correct, anyone have any ideas? your help will be greatly appreciated.

well, donno about your year, but TCM is operated by ECM. now, when you swapped trannies, your ECM probably goes nuts with that trannie. I don't think it's as easy as it appears, bud.

Did you take the ECM from the donor truck also?

nope i didnt ONLY because i was assured by the chevy dealer service manager here that the ecm had nothing to do with the tranny so i wouldnt need it, now the truck is off at the junk yard for quite sometime now

I'm definitely not an expert, but I think you need the ECM from the donor truck. If that truck is long gone you'll have to search for another '94 with manual trans and the same options as your current z71. Get some other opinions and good luck.

I'm doing the same swap on a '94 Saturn and I will definitely need the ECM from the donor.

:iceslolanok great news. by a stroke of luck i went to drive the truck bout a week ago and i blew 3 ecm fuses in a row, then i realized it happened when i pushed the clutch in, so i got to looking and the 3 wire wiring harness had fell against the clutch pedal push rod and rubbed thru til the wire was grounding out, i taped it and zip tied it out of the way. been driving it for bout 200 miles now and lots of shifts and havent blown a single fuse yet, so i guess the ecm is just fine.

:iceslolanok great news. by a stroke of luck i went to drive the truck bout a week ago and i blew 3 ecm fuses in a row, then i realized it happened when i pushed the clutch in, so i got to looking and the 3 wire wiring harness had fell against the clutch pedal push rod and rubbed thru til the wire was grounding out, i taped it and zip tied it out of the way. been driving it for bout 200 miles now and lots of shifts and havent blown a single fuse yet, so i guess the ecm is just fine.

I would carefully inspect all wires and with tyraps and tape secure all....

when ever a job like this is done with a vehicle of this age the plastic harness holders crumble...using ty fasteners with holes to secure to the sheel metal you will have a trouble free wire problems...

this also includes the plug wires...

I would carefully inspect all wires and with tyraps and tape secure all....

when ever a job like this is done with a vehicle of this age the plastic harness holders crumble...using ty fasteners with holes to secure to the sheel metal you will have a trouble free wire problems...

this also includes the plug wires...


did you just reply for the heck of it, your reply didnt make no sense or have anything to do with my reply. i am now a little bit stupider for reading it!!

did you just reply for the heck of it, your reply didnt make no sense or have anything to do with my reply. i am now a little bit stupider for reading it!!

"Didn't make no sense"? Didn't make any sense would be the grammatically correct way to state that thought, however it is great advice. And your reply to him doesn't make any sense, you had loose wires that were rubbed through, how would checking for crumbled plastic wire tubing not have anything to do with your reply? The purpose of that tubing to to protect the wires from getting rubbed through, you obviously had some trouble with some plastic breaking (either ties or tubing), hence the wires out of place and rubbed through. Now I'm not going to turn this around on you (very much), but the way things seem from here, if you are stupider, it's not for having read that! You should be thanking him for advice that would probably save you a headache down the road if you're smart enough to take it.

"Didn't make no sense"? Didn't make any sense would be the grammatically correct way to state that thought, however it is great advice. And your reply to him doesn't make any sense, you had loose wires that were rubbed through, how would checking for crumbled plastic wire tubing not have anything to do with your reply? The purpose of that tubing to to protect the wires from getting rubbed through, you obviously had some trouble with some plastic breaking (either ties or tubing), hence the wires out of place and rubbed through. Now I'm not going to turn this around on you (very much), but the way things seem from here, if you are stupider, it's not for having read that! You should be thanking him for advice that would probably save you a headache down the road if you're smart enough to take it.

:jerking: well well well, if you had read my post I found the problem and fixed it, i stated it cause it might give others an idea if they encountered a like issue. the fact that you wanted to stick up for someone is a noble act, but people like you should learn to know the difference between helping and/or butting out. you think i would take on a task like doing a tranny swap and not think to look at wires once i had a problem? who the f%$k are you anyway? what gives you the right to sit there and type the garbage you did? either you were raised wrong or you and your butt buddy taking turns whacking each other off while you type. do me a favor and mind your own business, your garbage was not wanted so go back in the closet and stay off my post. people like you make me sick! sound all smart online but when it comes down to it dont even know how to put gas in thier car! you loser, go jump off a tall building.

:jerking: well well well, if you had read my post I found the problem and fixed it, i stated it cause it might give others an idea if they encountered a like issue. the fact that you wanted to stick up for someone is a noble act, but people like you should learn to know the difference between helping and/or butting out. you think i would take on a task like doing a tranny swap and not think to look at wires once i had a problem? who the f%$k are you anyway? what gives you the right to sit there and type the garbage you did? either you were raised wrong or you and your butt buddy taking turns whacking each other off while you type. do me a favor and mind your own business, your garbage was not wanted so go back in the closet and stay off my post. people like you make me sick! sound all smart online but when it comes down to it dont even know how to put gas in thier car! you loser, go jump off a tall building.

Just because you found a problem doesn't mean you found the only problem. J cAT's a long time member here and a great source of knowledge. If a reply isn't helpful, just thank everyone and leave, don't attack someone who tries to help. Not to point out the obvious, but you clearly didn't look at the wires or you would have seen that problem immediately. As you said: "ok great news. by a stroke of luck...". I think that says it all. Incidentally, a trans swap is not all that hard of a job. You should have checked the wires immediately after blowing a fuse, if you had that would have been at most a 30 minute repair and you would have never come here. As for who I am, I am an ASE Certified automotive technician with a degree in automotive technology. I'm not just sticking up for this guy, I'm confirming what he said is correct based on my experience. I'm not claiming to be the best, I've only 5 years of experience at this, but I'm sure some of the old pros would agree with j cAT as well. Plastic breaks and the stuff it holds gets damaged, why not check it all? That "garbage" should have been wanted, maybe you'll find that out when something else wears through. While you seem like a delightful person, it seems odd that one would accuse another of homosexuality with no reason. Maybe a bit of deflection? Or upset because I corrected your grammar, and intimidated by my superior verbal capabilities and assume I am gay because of that? I can assure you it is due to superior intellect alone. While signature changes are retroactive, you could click on the first link, it would verify what I just said unless you think I just added it so I could "crawl further into the closet". As for the sounding smart online, I think so... and I'd bet the majority of the other members whom I have given assistance to would agree to that. Take a look at the number of posts I have, while number alone means little, nearly all of those are from helping people out. I'm a nice guy and I enjoy car talk, this site provides a great symbiotic relationship for me. I get to talk about cars, and others get help with their problems. Perfect! As for the "sound all smart online but when it comes down to it dont even know how to put gas in thier car!", please see my occupation, training and experience from above. Also please re-read the user guidelines that you agreed to when you signed up. You've got a few violations there. http://www.automotiveforums.com/vbulletin/guidelines.html The first of which was posting a problem with a '94 in the Silverado forum. Yours is a C or K series Pickup, which may or may not be the Silverado trim level. In '99 Chevy began a new line of trucks called the Silverado which was available in various trim levels such as LS. Others include: "Respect is the key", "Don't attack each other" and "Keep your posts clean". If you read the section on "transfer of ownership", you'll realize this isn't your thread either, it belongs to AF. Why are you getting so mad over someone telling you to check for broken things related to the broken thing you found anyway?

EDIT: I forgot your advice to me... We don't really have any tall buildings around here, so the best I could hope for there would probably be some broken bones. But I sincerly appreciate your suggestion of how to make this world a better place. I tried turning my .45 around on me, but when I pull the trigger towards me, nothing happens. Can't figure that one out! First tall bulding that goes up, I'm jumping! I just hope there's not a complicated system of horizontal bars at the top the prevents me from going over.

"Didn't make no sense"? Didn't make any sense would be the grammatically correct way to state that thought, however it is great advice. And your reply to him doesn't make any sense, you had loose wires that were rubbed through, how would checking for crumbled plastic wire tubing not have anything to do with your reply? The purpose of that tubing to to protect the wires from getting rubbed through, you obviously had some trouble with some plastic breaking (either ties or tubing), hence the wires out of place and rubbed through. Now I'm not going to turn this around on you (very much), but the way things seem from here, if you are stupider, it's not for having read that! You should be thanking him for advice that would probably save you a headache down the road if you're smart enough to take it.

you just dont get it do you?? 1st you wanna sya i didnt classify my truck as a c or k? thats so petty thats all im going to mention. 2nd you stated something bout respect to each other on the forum? look at what i quoted you said above. "youre not going to turn this around on me" like i said who are you to do that, if you "respected" me or my post then you woulodnt have had to put your 2 cemts in so leave the respect thing alone, you dont deserve it because you dont give it! as far as your so called "qualifications" and subperb writing skills, i cant beleive you mentioned that. i know everyone on this forum knows someone that has ase certs and i know at least 90% of them are full of bs, there are alot more booksmart people with those certs than those without. i would rather take my vehicle to a "shadetree" with 20 years experiance than a ase certified p.o.s that has what 5 years? once again if you had just stayed out and decided not to "turn this around" i wouldnt be wasting my time, oh and if this is what makes you feel good in life by "helping people", why dont you try going out to your local soup kitchen or give your time to those that dont have much like we down here! but i guess since you have those highly valued ase certs that makes you much better than us lower people huh? let me tell you one thing an ase test dont matter much when your an ahole, cuz your still and ahole with a piece of paper, forget the building, just choke yourself you pos

did you just reply for the heck of it, your reply didnt make no sense or have anything to do with my reply. i am now a little bit stupider for reading it!!

I only replied with these recomendations ,because if one wire was damaged there are most likely others ready to get damaged...this is a very old vehicle and this is when the wires do fail/wear into the metal surounding them..

If you find this offensive I really don't care..seen this before with you cowboy types...ask questions then go on the attack...

you just dont get it do you?? 1st you wanna sya i didnt classify my truck as a c or k? thats so petty thats all im going to mention. 2nd you stated something bout respect to each other on the forum? look at what i quoted you said above. "youre not going to turn this around on me" like i said who are you to do that, if you "respected" me or my post then you woulodnt have had to put your 2 cemts in so leave the respect thing alone, you dont deserve it because you dont give it! as far as your so called "qualifications" and subperb writing skills, i cant beleive you mentioned that. i know everyone on this forum knows someone that has ase certs and i know at least 90% of them are full of bs, there are alot more booksmart people with those certs than those without. i would rather take my vehicle to a "shadetree" with 20 years experiance than a ase certified p.o.s that has what 5 years? once again if you had just stayed out and decided not to "turn this around" i wouldnt be wasting my time, oh and if this is what makes you feel good in life by "helping people", why dont you try going out to your local soup kitchen or give your time to those that dont have much like we down here! but i guess since you have those highly valued ase certs that makes you much better than us lower people huh? let me tell you one thing an ase test dont matter much when your an ahole, cuz your still and ahole with a piece of paper, forget the building, just choke yourself you pos

Don't get what? Why you were such a jerk to j cAT and then to me? You are correct on that one! Apparently you think that nobody should stand up for anyone else? If that's truly how you think, I feel very, very sorry for you. You cannot dispute the fact that your problem stemmed from a broken piece of plastic, and that another member suggested that you look for other such problems, and that you thought that was such horrible advice. Ask your highly revered shadetree mechanic if wires being where they shouldn't be can cause a problem. I didn't say you didn't say if your truck was a C or a K, I said you posted in the wrong forum. This forum is for the model called the "Silverado", which began production on 1999. Yours is a C/K series model "Pickup" which ended, I believe, in 2001. It's not the same model, sure there are similarities, but they are different vehicles. You may as well have posted in the S-10 forum, which is actually more similar to your truck than a Silverado is. Go back and re-read what I said originally, I think you misunderstood it. You implied that j cAT is so stupid that it rubbed off on you, I simply meant if you are stupider (ironically, "stupider" isn't even a word :rofl:) than you were it wasn't due to reading that post. I was merely attempting to help you in narrowing down the possible causes. I don't care if a complete stranger respects me or not, just pointing out yet another violation, and had you respected j cAT and his tip, I would have said nothing and we wouldn't be having this conversation. I would like to point out, however, that except for turning your insult around on you, I never said anything to disrespect you where you didn't first disrespect me. Until you disrespected j cAT, I had no disrespect for you. If you think an ASE certification means nothing, go take one test and see how you do. I'll admit that they were extreemely easy for me, but I assumed that was because the knowledge was there. Maybe they really are that easy... but I'd like to know your background in education if you feel that having a college degree in something is meaningless. Now as for being "booksmart", I don't understand why that is bad. If you assume that a person can be only one kind of smart, then I could begin to see why, but there is more than one kind of smart, and one person can be smart in many ways. Why exactly do you feel that 90% of us are full of BS? Also, I would like to point out that the way you worded it, you said that most people who are booksmart are ASE certified, which is clearly false, but keeps painting a better and better picture. You take your vehicle to whomever you prefer, that's your choice but I've seen some huge messes when one of them tries more than removing or installing bolts. Anyone with two thumbs can remove and reinstall a bolt, that's the easy part. You're also taking a huge jump in assuming that I am a "p.o.s.", you know absolutely nothing about me, other than I am whooping your ass verbally, and I guess you must not like it. As for me staying out of this, I'll direct you back to my 4th and 5th sentences. I stand up for anyone who is in the right (not just online), and in this case, I don't care how stupid and pointless it is to get involved. Once again, I have to question why you got so belligerent because someone gave you some advice. Anyway, just because I help people online doesn't mean that I don't do actual volunteer work, in fact I do. Just not at soup kitchens because the majority of bums are capable of working but choose not to because they know that they can leech off of society. I have nothing against anyone due to a lack of education, and a lot of my friends are "lower people", as you would put it, but until now I had never thought of it like that. Even the inability to use proper grammar or spell words correctly is forgivable to an extent, as long as it's readable. But if someone with no education, who can't spell, use proper grammar or punctuation has the nerve to insult the intelligence of someone who gives some good advice, you bet I'll point it out. And, not to split hairs on what I hope is sarcasm, but it is impossible to choke yourself to death. Prior to death you loose consiousnes which causes you to relax your grip, regain oxygen, and keep on living. :thumbsup:

alright i get it, dont brag about your grammar and writing skills anymore, although im sure thats your best quality and drives all the desperate woman or men crazy, but you still arent smart enough to realize i want to know one thing, what gives or gave you the right to "turn it around on me" when it had nothing to do with you. until i get a logical answer then youre still a pos who gets jollies by posting here as much as you do. and i dont need to know you to call you that i can just tell, just like your comment about homless that can get a job if they wanted too, its not all that easy, if you got of that almighty horse youre riding fueled by that huge ego you have cause of your precious ase certs youd understand that, later P.O.S.!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

alright i get it, dont brag about your grammar and writing skills anymore, although im sure thats your best quality and drives all the desperate woman or men crazy, but you still arent smart enough to realize i want to know one thing, what gives or gave you the right to "turn it around on me" when it had nothing to do with you. until i get a logical answer then youre still a pos who gets jollies by posting here as much as you do. and i dont need to know you to call you that i can just tell, just like your comment about homless that can get a job if they wanted too, its not all that easy, if you got of that almighty horse youre riding fueled by that huge ego you have cause of your precious ase certs youd understand that, later P.O.S.!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

I wasn't bragging about my skills, merely pointing out that you had absolutely no business judging the intelligence of anyone else. Grammar and punctuation are a very good way to judge one's intelligence. Both my girlfriend and I cannot tolerate stupid people, so in a way I suppose my grammar and writing skills might "drive her crazy". I keep saying this. You called j cAT stupid for suggesting you check for other problems similar to the one you found. What gives you the right to ask for assistance on a problem and then insulting someone who gives good advice? Although it had nothing to do with me directly, well, I'll direct you back to my last post where I explained that fully. Let me guess, you're the kind of person who tries to grab an old ladies purse, and then gets mad when I interfere by pinning you against a wall, dropping you to the ground and holding you there until the police come? Because I had no right to interfere. Your semi-coherent, rambling, baseless insults are nothing compared to some lowlife threatening to kill me while trying to reach into his pocket, but surprisingly it is more annoying. I also keep asking why j cATs suggestion made you so angry. I think I explained why I post here so much, and if you doubt my helpfulness, look back through my recent posts and the "thank you"s I have had, primarily for Cavaliers, but one good one in the Cobalt forum. Most of the posts are from helping people, and I get along with most people very well. The last time I argued with someone on here was years ago when he suggested that cutting a hole in the floorboard was a great and easy way to replace the fuel pump on a Tahoe/Suburban. Anyone who has any valuable skill can go out and get a job, it is all that easy. Or work 3 part time jobs in fast food restaurants if they have no particular skill. I like helping people, but not when they won't try to help themselves. You do realize you're saying I'm a bad person because I volunteer in the wrong places? I'm done arguing this, it keeps reminding me of a quote someone here used to have in their signature. Something like "Never argue with (...) someone watching may not be able to tell the difference". I forget exactly what all goes in the middle :naughty:. Anyone remember that one? I wish you the best (seriously, I do), goodbye.