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 of 1 people found this helpful.
20,805

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 of 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

Add photo

Related Questions

Sierra 1500

Looking for a Used Sierra 1500 in your area?

CarGurus has 68,592 nationwide Sierra 1500 listings starting at $1,800.

ZIP:

Search GMC Sierra 1500 Questions

GMC Sierra 1500 Experts

#1 dragonflyoffshore
dragonflyoffshore
Reputation 5,230
#2 John Saffrahn
John Saffrahn
Reputation 3,640
#3 Glenn Clingenpeel
Glenn Clingenpeel
Reputation 3,320
View All

Related Models For Sale

Used Ford F-150
2,141 Great Deals out of 195,033 listings starting at $290
Used Chevrolet Camaro
345 Great Deals out of 31,316 listings starting at $2,500

Used Cars For Sale

2017 GMC Sierra 1500 For Sale
91 Great Deals out of 44,448 listings starting at $23,368
2016 GMC Sierra 1500 For Sale
86 Great Deals out of 3,504 listings starting at $17,670
2015 GMC Sierra 1500 For Sale
98 Great Deals out of 4,231 listings starting at $16,291
2014 GMC Sierra 1500 For Sale
91 Great Deals out of 4,188 listings starting at $13,995
2013 GMC Sierra 1500 For Sale
54 Great Deals out of 1,954 listings starting at $8,500

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.