I have a 1988 gmc sierra k1500 single cab short box stepside with a 350 and a 700r4 tran. i replaced the fuel pump the truck started fine. I tried to put out in gear and it started to grind then nothing i can shift from park to 1st and its like all the gears are gone truck will not move. trany fluid is new and full. I'm wondering if any one would know what went out.

10

Asked by Feb 13, 2013 at 11:53 AM about the 1990 GMC Sierra 1500 K1500 SLE 4WD Standard Cab Stepside SB

Question type: Maintenance & Repair

7 Answers

Mileage? And this happened right then when you changed fuel pump, or did it drive for a while?

1 people found this helpful.
23,075

is it up on rack for pump job,maby the driveshaft pulled back to tip of splines

throw out bearing?? and coincidence

10

It hasn't drove in a year or so we put the trany and transfer case back in to change the transferase but the truck wouldn't start after. I toke the box off to change the fuel pump and now it runs and starts fine. I tried to put it to drive and nothing.

10

I was thinking it may be the pump within the trany but I'm not sure

1 people found this helpful.

Have you made sure tranny fluid is getting to the torque convertor? I am gonna be gone a minute or 120 maybe....LOL I be thinking and I'll be back, it's tough to do this kind of stuff on tv, but we'll see, ok internet. But diagnosing a prob. like this isn't easy, unless you want to lay under the truck with a lap top, not kidding, well maybe. But it beats running back and forth to the house and especially if you can get me sound. no joke?

web cam.....LOL WT heck why not

Your Answer

Sierra 1500

Looking for a Used Sierra 1500 in your area?

CarGurus has 58,645 nationwide Sierra 1500 listings starting at $1,995.

ZIP:

GMC Sierra 1500 Experts

  • #1
    dragonflyoffshore
    Reputation
    5,590
  • #2
    John Saffrahn
    Reputation
    3,870
  • #3
    Glenn Clingenpeel
    Reputation
    3,680
View All

Related Models For Sale

Used Ford F-150
2,293 Great Deals out of 215,019 listings starting at $1,300
Used Chevrolet Camaro
241 Great Deals out of 28,827 listings starting at $1,800
Used Chevrolet Corvette
98 Great Deals out of 15,352 listings starting at $3,900

Used Cars For Sale

2018 GMC Sierra 1500 For Sale
18 Great Deals out of 31,742 listings starting at $23,873
2017 GMC Sierra 1500 For Sale
74 Great Deals out of 5,419 listings starting at $19,900
2016 GMC Sierra 1500 For Sale
62 Great Deals out of 2,811 listings starting at $16,422
2015 GMC Sierra 1500 For Sale
77 Great Deals out of 4,681 listings starting at $13,995
2014 GMC Sierra 1500 For Sale
74 Great Deals out of 3,065 listings starting at $13,500

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.