Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
Hi there, I am Cam.Can I get your first name please?I am not sure if you have used our service before or not. The experts here are third party contractors. Myself, I am a GM technician in a Gm dealership. I will be happy to help you. Please understand that my only compensation for the time spent helping you is by your rating of my service in a positive way. The more information you provide, the better the chances of getting your issue resolved. Also please reply if you have any followup questions.So about your vehicle,
what engine is in your truck?IS there a remote starter or anything aftermarket installed?
OK, how often does this happen Sam? Is it predictable? My thoughts are first and issue with the relay in the underhood fuse block.
Second wiring issue under that fuse block where mice and such like to nest, a
Third is a fault with the wiring at the starter or the starter itself.
See the relay is the end control of the starter and that is controlled by the PCM using several inputs to prevent such a thing from happening. So I suggest a good visual inspection of all these places paying close attention to the wiring at the starter and from there, and then start in the specific spots I mentioned.
Oh, thats the key,
Check the position of the wiring at the starter. It sounds like you have one lead turned around and its contacting the other one. If they are not touching then your new starter is faulty internally.
Ok, if you take the smaller wire off the starter, and connect the battery, does it spin? If no, does that wire get power all the time with the key on?
If it spins with the small wire off, that can only be internal. You can check the starter by applying the power and ground using jumper cables.
Ok, lets look at how your installing it. Are you using anything other than a wrench to tighten the cable onto the starter? The post can spin and cause issues like this.
What brand of starters are installing then?everything your telling me leaves me thinking you should keep talking to the supplier. With it spinning only with the large cable installed and confirming its not touching the smaller stud can only leave the starters.
I am not sure what else I can tell you.
If starter is spinning with ONLY larger wire installed and smaller wire off, it can ONLY be the starter!.
GO back and verify your smaller wire then. If they bench test fine then for some reason, something is being missed.
If the positive cable was shorted to the engine block, it would get hot and smoke/start a fire.
I should be around, yes.
I will get the reply.