Marts99Silverado

Both posts seem to have corrosion on them. But nothing extreme. And after I tried my other battery in it and it failed I put it back in my 04 and it started without hesitation

Hello all, first and foremost thanks for your time to stop by and read and help if it applies to you. so I have a 99 Silverado with a 5.3 in it. Also I have a 04 Silverado that I recently acquired. The windshield washer reservoir was cracked on my 04. So I began to pull out the reservoir in my 99 to put in my 04. After I buttoned up everything. I was putting the 99 back together and once I hooked the battery up. I tried to start it. And I didn’t get anything other than “tic tic tic tic tic” like as if the battery was dead. I put my newer battery in it and still same thing. Do you guys have any idea on what could be causing this. Anything helps. Thanks so much

I have a 99 Silverado with a 5.3 vortex. It’s middle of winter here. We’re getting colder than normal temps. (20s down to single digits.) couple weeks ago I realized when I would start my truck in the morning it’d be idling, and then it would bog down to under 500 rpms and sputter. Just for a brief moment then rev up to 1500 or so and do the same thing. I don’t know what is causing this. Any ideas ? I could post a video tomorrow morning and show y’all. Appreciate your time and thoughts. Thanks to all in advance.