tranny trouble

Asked by Jul 26, 2013 at 01:00 PM about the 1994 GMC Sierra 1500 K1500 SL 4WD Extended Cab SB

Question type: General

I got a 1994 gmc 1500 4x4 with a 350 auto.   The tranny loses overdrive and third gear after about 30 mins of driving it i will have first, second and reverse, but if i let it sit for about 15 mins it will shift through all the gears smoothly  and i can go for about anther 30 mins befor it acts up again, the fluid is clean a up to the line.    some guys say the tranny is dun and others say it could be a senser, any kind of help would be great.

3 Answers

have you checked the transmission fluid level "full" with the engine running in neutral...if so was the color cherry red yet? did it smell burnt?

505

have you had throttle position sensor ( TPS) looked at? I know on some vehicles the tranny gets a signal from the TPS.you might take it to a tranny shop and have the TPS checked out,its worth a try.......bigc52

1 of 1 people found this helpful.

like this~

Your Answer

Sierra 1500

Looking for a Used Sierra 1500 in your area?

CarGurus has 65,123 nationwide Sierra 1500 listings starting at $2,495.

ZIP:

GMC Sierra 1500 Experts

  • #1
    dragonflyoffshore
    Reputation
    5,370
  • #2
    John Saffrahn
    Reputation
    3,700
  • #3
    Glenn Clingenpeel
    Reputation
    3,380
View All

Related Models For Sale

Used Ford F-150
2,291 Great Deals out of 183,552 listings starting at $699
Used Dodge Ram 1500
352 Great Deals out of 10,726 listings starting at $1,500
Used Toyota Tacoma
625 Great Deals out of 42,232 listings starting at $1,500
Used GMC Yukon
398 Great Deals out of 21,427 listings starting at $1,495
Used Chevrolet Tahoe
677 Great Deals out of 39,509 listings starting at $1,000
Used Chevrolet Camaro
415 Great Deals out of 30,636 listings starting at $3,550

Used Cars For Sale

2017 GMC Sierra 1500 For Sale
75 Great Deals out of 29,394 listings starting at $18,033
2016 GMC Sierra 1500 For Sale
118 Great Deals out of 3,814 listings starting at $15,681
2015 GMC Sierra 1500 For Sale
137 Great Deals out of 4,873 listings starting at $16,900
2014 GMC Sierra 1500 For Sale
126 Great Deals out of 4,897 listings starting at $14,204
2013 GMC Sierra 1500 For Sale
75 Great Deals out of 2,037 listings starting at $8,450

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.