2003 Silverado 5.3 transmission problem


Asked by Mar 18, 2014 at 02:03 AM about the 2003 Chevrolet Silverado 1500 Ext Cab Short Bed 2WD

Question type: Maintenance & Repair

I had question I have a 03 Silverado
5.3l and I'm having transmission
problem it won't shift to 3rd and high
rpms that was today, yesterday it
was changing to all shifts only
problem was it was with high rpm
and it said transmission hot then I
stop let it cool down then I took off
again and it was running good for
about 15 min and then it started to
go slow I was going 70mph and I
could only go around 50 and I stop
and checked trans fluid and there
was a little of fluid in it I put two
bottles of trans fluid and took off and
I could only go 50mph or less today I
went to a guy that fixes trans and
told me it doesn't go to over drive
and he has to rebuild the whole
transmission is it true ?

6 Answers


I'm not looking at the trans, but based on your descriptions, there is probably some internal damage to some of the components. How many miles on the transmission, over 120K? If you were low on fluid, that tells me there is a leak, and running low on fluid overheating the transmission is a bad thing. Then yes, your mechanic is right, parts need to be replaced, and when your replacing some parts, you usually replace all the parts so they can warranty the work, so a full rebuild is necessary. HTH's.

1 of 1 people found this helpful.
Best Answer Mark helpful

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.

2 of 2 people found this helpful.

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.

4 of 4 people found this helpful.

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

2 of 2 people found this helpful.

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

Your Answer

Silverado 1500

Looking for a Used Silverado 1500 in your area?

CarGurus has 158,488 nationwide Silverado 1500 listings starting at $1,000.


Chevrolet Silverado 1500 Experts

  • #1
    John Carson
  • #2
  • #3
    Andrew Olsen
View All

Related Models For Sale

Used GMC Sierra 1500
1,176 Great Deals out of 62,310 listings starting at $1,995
Used Ford F-150
3,154 Great Deals out of 231,769 listings starting at $1,300
Used Chevrolet Silverado 2500HD
428 Great Deals out of 31,574 listings starting at $2,500
Used Dodge Ram 1500
350 Great Deals out of 10,829 listings starting at $1,988
Used Toyota Tundra
645 Great Deals out of 36,739 listings starting at $1,500
Used Toyota Tacoma
582 Great Deals out of 42,015 listings starting at $2,500
Used Chevrolet Tahoe
852 Great Deals out of 40,104 listings starting at $1,900
Used Chevrolet Colorado
340 Great Deals out of 42,642 listings starting at $1,299
Used Ford F-250 Super Duty
441 Great Deals out of 47,981 listings starting at $695
Used Chevrolet Camaro
424 Great Deals out of 31,674 listings starting at $3,495
Used GMC Sierra 2500HD
129 Great Deals out of 14,906 listings starting at $3,259
Used Ford Mustang
340 Great Deals out of 42,824 listings starting at $1,488
Used Nissan Titan
334 Great Deals out of 22,024 listings starting at $1,995

Used Cars For Sale

2018 Chevrolet Silverado 1500 For Sale
10 Great Deals out of 84,075 listings starting at $19,417
2017 Chevrolet Silverado 1500 For Sale
262 Great Deals out of 14,843 listings starting at $16,439
2016 Chevrolet Silverado 1500 For Sale
278 Great Deals out of 7,075 listings starting at $16,777
2015 Chevrolet Silverado 1500 For Sale
465 Great Deals out of 11,652 listings starting at $13,775
2014 Chevrolet Silverado 1500 For Sale
483 Great Deals out of 10,662 listings starting at $9,300

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.