2003 Silverado 5.3 transmission problem

Thanks tom for the info And I appreciate your help and my truck has 203k miles

It also could be a electrical problem. my 94 W/T would not shift also turns out there is a computer that tells the transmission when to shift look at that before you spend $1800.00 on a new tranny. forget a rebuild.

Check the color and smell of your fluid. a dark(almost black) indicates a burnt out 3-4 clutch pack. A red and oil smell would indicate an electronic issue.

Hi, could anyone give me an honest answer I just put in a used engine in my Chevy Silverado 2003 5.3 the mechanic said the gears are not shifting 3rd and 4th but it shifts whenit wants to. He did change the transmission oil because the old one was pretty dirty any help would help My email is vamp121970@yahoo.com my name is Enrique

My transition won't shift in to from drive to next gear I have to go to 2 gears by shifting to get going then I can manually shift

Possible shift solenoid,or valve body plunger sticking or stuck

My chevy 2004 with automatic transmission just don't change the gears just because the computer don't receive the signal can you help me please

Buy a Ford, I have a six speed in my 2008 Denali, the transmission has been rebuilt 4 times since June of 18, same problems Tac over revs, kicks a code and goes into limp mode. New ECM and TCM and torkconvereter. GM transmissions SUCK

I had a 2003 Chevy Silverado with the 4 speed electronic shifting transmission. It was bought new and had the standard 3 year/36,000 mile warranty. At 38,000, it started to have occasional lappes in shifting from 2nd to 3rd. I attribute the problem to GM taking the lowest bid from their OEM's for the tranny parts, that would just get the truck to over the warranty period. I had 5 other GM/Chevy trucks over the past 25 years with no tranny problems. But, they all had the mechanical shifting method. I did the fluid and filter change ahead of schedule and never abused the vehicle. It seems as though most all these truck mfgers. can't or won't put in the durable parts that would allow for comparable previous performance. I guess you have to buy a 2002 or earlier GM/Chevy and put up with the higher mileage or rust. You can spend 2-3,000 for an extended warranty, but should you have to when the US truck sellers get the protection of a 25% tariff on foreign imported trucks. You,d think there would be enought money to spend a couple hundred extra for good, durable parts. I am done buying any US PU. Ford has the 2011-13 problem of their trannys down shifting from 6th gear to 1st-can you spell trashed at 65 mph.

What was the problem? And how you fix it?

We r having the same problem 04 chevy 5.7L wont shift from 2nd to 3rd. We had a tire blow out and rip the wiring harness loose, so it may have sum thing to do with that. I agree with the man that said buy a ford that's what I said before we bought this hunk of junk!

I have an 04 Chevy 1500 four-wheel drive I started up shifts and drives fine for about 50 ft lose all my gears shut the truck down for about a minute or two start it back up and I can drive another 50 feet till it happens again is this as simple as just adding fluid I was also told it could be a clutch pack

What was the issue? Mine is doing the same thing

Manual transmissions people