Ok, 2 questions...first, why does the rear defrost cycle only last about a minute or two? Is there a way to adjust that? I have had to solder one side on and it works fine, I just wonder if that has anything to do with it.

Next question, my windshield wipers seem to have a mind of their own. Most of the time they work, other times, they don't. If I pull gently on the wiper arm they will go but will probably stop after a minute or so. Sometimes if I leave the switch on they will eventually come on...so what do you think??

 

sounds like the wiper motor or curcuit board in the wiper motor unit. check in the how to and faq sticky at the top of the 4th gen section. this is there and more. https://camaroforums.com/forum/4th-g...rmation-66130/

 

The PCM shuts the rear defrost off after a certain time cycle, no way to change that. just push the button again to turn it back on Its due to the electrical load the defrosters have.

 

My 99 Camaro does this exact same thing! I hate that the rear defroster will only stay on for a few minutes instead of about 15 mins like 99% of all cars do. Why would GM ever have a 3 min time limit for a rear defroster is just stupid. It doesn't even have enough time to melt frost off the window before it shuts off.

 

there is deff something wrong with your rear deefroster mine stays on for a good 15-20 min my best guess would be something is over loading your rear defroster system and the pcm is shutting it down i had an exploder that sterting doing the same thing turned out to be a bad relay