Chevrolet Forum - Chevy Enthusiasts Forums - 1999 - 2006 (GMT800) https://chevroletforum.com/forum/ Section for all discussion related to the 1999-2006 Chevrolet and GMC trucks. en Sun, 17 May 2026 18:57:00 GMT vBulletin 60 https://chevroletforum.com/forum/images/kirsch/misc/rss.jpg Chevrolet Forum - Chevy Enthusiasts Forums - 1999 - 2006 (GMT800) https://chevroletforum.com/forum/ Transmission swap https://chevroletforum.com/forum/1999-2006-gmt800-108/transmission-swap-121922/ Fri, 15 May 2026 20:56:35 GMT Im looking to buy a 2005 Chevy Silverado 2500HD crew cab 8' bed with a bad transmission
It has a 6.0 with a 4l80, it has the push button 4wd and my buddy has a manual shift 4wd 4l80(its automatic besides the 4wd shift)

Would it be to much of a pain to swap in the manual 4wd 4l80 or should i just get another automatic 4wd 4l80 transmission for it. Any advice would be appreciated, Im fairly new to the truck scene and this would be my first GMT800/ heavy duty truck ]]> 1999 - 2006 (GMT800) Blackhawk2141 https://chevroletforum.com/forum/1999-2006-gmt800-108/transmission-swap-121922/ 2005 Silverado -loss of acceleration power while driving https://chevroletforum.com/forum/1999-2006-gmt800-108/2005-silverado-loss-acceleration-power-while-driving-121914/ Thu, 14 May 2026 00:09:46 GMT 2005 1500 LS 5.3 Vortec Gas - has new alternator and battery. 2 issues randomly will lose acceleration (throttle)power while driving, usually can see battery gauge flutter right before. Throws code... 2005 1500 LS 5.3 Vortec Gas - has new alternator and battery. 2 issues randomly will lose acceleration (throttle)power while driving, usually can see battery gauge flutter right before. Throws code U0701, you can unplug the connection to the throttle body, clear code and it will run like normal. 2nd issue battery drains when sits over night even after being driven, but not every night
]]> 1999 - 2006 (GMT800) Dbailey4776 https://chevroletforum.com/forum/1999-2006-gmt800-108/2005-silverado-loss-acceleration-power-while-driving-121914/ Can’t pass VA inspection https://chevroletforum.com/forum/1999-2006-gmt800-108/can%92t-pass-va-inspection-121898/ Sat, 09 May 2026 17:26:57 GMT I have an ABS/Parking brake lights on the dash. I have cleaned the ground bringing it to bare metal and replacing contacts, bolt and washer with copper contacts and stainless. All electrical... I have an ABS/Parking brake lights on the dash. I have cleaned the ground bringing it to bare metal and replacing contacts, bolt and washer with copper contacts and stainless. All electrical connections with contact cleaner. Virginia will not pass the truck with the lights on.

Im trying to troubleshoot vs. selling/donating . The truck is pretty rotted on the body from being in upstate NY for 23 years. It has 167k on the odometer, and all maintenance has been kept up.

any suggestions on how to pass in Virginia or where to go?

next year it qualifies as an antique and I don’t have to worry about this.
]]> 1999 - 2006 (GMT800) Jklem https://chevroletforum.com/forum/1999-2006-gmt800-108/can%92t-pass-va-inspection-121898/ 02 Silverado - From stop it goes slow even with a lot of gas applied https://chevroletforum.com/forum/1999-2006-gmt800-108/02-silverado-stop-goes-slow-even-lot-gas-applied-121862/ Mon, 27 Apr 2026 19:31:41 GMT Hi and thanks for any thoughts on this! I have a 2002 Silverado 1500 4.8L v8 (110k miles) that sometimes has trouble getting moving from a stop. It happens sporadically (both hot and cold) and... Hi and thanks for any thoughts on this!

I have a 2002 Silverado 1500 4.8L v8 (110k miles) that sometimes has trouble getting moving from a stop. It happens sporadically (both hot and cold) and will sometime occur from every stop one day, but then not happen again for a few days.

From a stop, I'll apply gas and it'll get to around 1500rpm but not go more than 5mph at first. Most of the time if I keep applying more gas, it'll eventually climb to around 10mph and later shift hard to get to 2nd and start going normally. Other times I have to shift down to 1st manually to get going and then shift back to Drive after I'm moving. It sometimes makes a bit of a rattling noise when it's happening, but most of the time it's just the revving noise that makes it sound like it's picking up speed but it's not. I also sometimes notice it shifting hard when coming to a stop, so I wasn't sure if it's maybe just not downshifting properly and then starting in a higher gear than it should—just a guess though, as I'm not a mechanic.

I've cleaned the throttle body and mass airflow sensor, but it didn't help much if at all. I've had it to two transmission shops, but it wouldn't do the slow take off while they had it driving it around, so they said it's running great. They also did diagnostics both times without any issues showing. I plan to get a transmission fluid and filter change, but I was hoping I could get some other ideas of what they might check before taking it back to the shop. They said they can tear the transmission apart or replace it, but I want to make sure there isn't something outside the transmission that might be screwing things up before we start rebuilding or replacing it.

I'm attaching a video to show the speed and RPM. In the video, I'm trying to leave from a stop and giving it a lot of gas—enough that it'd have usually gone to 20mph or more quickly. Instead it goes from 1000-1500rpm and between 5-10mph before it finally gets going faster and eventually shifts.

Thanks in advance for any thoughts on this!
Attached Files
]]> 1999 - 2006 (GMT800) sbbd https://chevroletforum.com/forum/1999-2006-gmt800-108/02-silverado-stop-goes-slow-even-lot-gas-applied-121862/ 2002 Chevy 1500 charging issue? https://chevroletforum.com/forum/1999-2006-gmt800-108/2002-chevy-1500-charging-issue-121861/ Mon, 27 Apr 2026 17:01:52 GMT Just bought an old fleet truck for my son to use as a beater with a heater. 2002 1500 two wheel drive with the 4.8 engine and automatic transmission. Back when these were new my construction... Just bought an old fleet truck for my son to use as a beater with a heater. 2002 1500 two wheel drive with the 4.8 engine and automatic transmission. Back when these were new my construction company would have a half dozen of these rolling around and I was very impressed with how they held up. This unit appears to be in decent condition - but occasionally the "BATTERY" light pops on and the 4 gauges (gas, oil, volts ,temp) will start wavering back and fourth from max to min. After about 30 seconds or so the BATTERY light shuts off and everything returns to normal. Is this common? Do I have a ground or alternator issue? Gauge cluster issue?


]]> 1999 - 2006 (GMT800) Hockeygoon 2 https://chevroletforum.com/forum/1999-2006-gmt800-108/2002-chevy-1500-charging-issue-121861/