Hello, I just recently help someone replace my transmission in my 2001 Tahoe. It started at will before the original transmission was replaced and it started the 3 times after it was replaced. Now I had bad sensor or something on my trunk door because it even with it being fully closed my interior lights stay on and the cluster reads as the trunk door is open. With that being said, I just disconnect the battery post when I get out. Now the last time I started it I simply took the negative post off because My positive post is brand new and was kinda a pain taking off even with it being all the way loose. The truck ran until I turn the switch off. I come out the next morning and now it does nothing when I turn the key over. The battery is good and charged . The posts is now loose. The dash light up and all the accessories works fine . The alarm is not engage.I’m Puzzled and I need help. Can Anybody help me or is there anyone out there who is had the same problem or similar?
2001 Tahoe No Crank and No Start Issues
- Thread starter D1AB10
- Start date
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rockola1971
Full Access Member
First the goofy interior lights and cluster behavior likely can be taken care of by inspecting the engine to firewall braided ground wire. Is it connected, corroded/loose or been broken? When you mention the "alarm" are you referring to an aftermarket alarm system or the GM factory Passlock security system? What is your battery voltage with key off? How about when key turned forward to engine crank? Check your battery wires all the way down to engine ground and starter main terminal. Verify NO WIRES were pinched in between tranny and engine bellhousing.
When you want to disconnect the battery for general maintenance remove the negative cable first. No need to remove the positive cable.
I’m sorry about that. The alarm I’m referring to is the GM factory system. There is no aftermarket alarm system in the truck. Is the volt meter going to read with the truck off? I’ve been trying to get better at my fixing cars and that just something I didn’t know. And when I turn the key over the truck doesn’t attempt to even spin over. I don’t hear the starter clicking. Also when the key is in the forward position the gear indicator goes black as long you keep the key in that position.But when I let off the display light up fine like the battery is charge.
rockola1971
Full Access Member
You need a voltmeter (like a multimeter, digital voltmeter) to read the battery voltage. The dash gauge will not be accurate enough to diagnose this mess. And like @Fless mentioned, when you have to temporarily disconnect a battery (But not remove it) You ALWAYS just disconnect the negative. Not the Positive. The only reasons you should remove the positive wire from the battery is because you are removing the battery from the vehicle or cleaning the connection.
