i have a 1997 gmc sierra truck runs good for 3-4 days then dies.. fuel pump is not coming on ive changed fuel pump relay. wait 30 mins later then it cranks. then a week or so later it does it again..i cant figure out whats wrong with it.. any help would be greatly appreciated..

Asked by Jun 20, 2015 at 10:32 PM about the 1997 GMC Sierra 1500 C1500 SL Extended Cab LB

Question type: Maintenance & Repair

6 Answers

78,505

Check the amperage draw for the fuel pump, if it's pulling too may amps it is most likely overheating the pump relay and burns out the points.

1 out of 1 people think this is helpful.
58,555

TS, is right ,but if not relay ,may be the pump,they act like this when bad, run good for a while the go out,then work again,

1 out of 1 people think this is helpful.
Best Answer
145

Mine did the exact same thing. It was the pump. It was not a GM pump and i've heard from a few sources you have to use a GM pump as the other ones all fail.

1 out of 1 people think this is helpful.

Thanks Everyone but we still haven't figured it out yet. I have checked the fuel pump and its not that,so i have checked so many things including the module iginition but for some reason when my truck dies after driving it around for about 30 mins the fuel pump is not on at all so im lost. Any help would be wonderful. it ill is dying on me so i no its something in the front end but not sure where and why.. HELP

58,555

The only other thing you may need to check is the ECM,when they go bad they run good,then not.

1 out of 1 people think this is helpful.
58,555

All so check the wires under the relay that hooks into fuse box,may be loose,

1 out of 1 people think this is helpful.

Your Answer

Add photo

Related Questions

Sierra 1500

Looking for a Used Sierra 1500 in your area?

CarGurus has 58,871 nationwide Sierra 1500 listings starting at $2,495.

ZIP:

Search GMC Sierra 1500 Questions

GMC Sierra 1500 Experts

#1 dragonflyoffshore
dragonflyoffshore
Reputation 4,500
#2 John Saffrahn
John Saffrahn
Reputation 3,150
#3 Glenn Clingenpeel
Glenn Clingenpeel
Reputation 2,770
View All

Related Models For Sale

Used Ford F-150
3,475 Great Deals out of 207,573 listings starting at $1,273
Used Dodge Ram 1500
545 Great Deals out of 13,072 listings starting at $1,800
Used Toyota Tacoma
800 Great Deals out of 34,292 listings starting at $2,988
Used GMC Yukon
544 Great Deals out of 17,693 listings starting at $1,777
Used Chevrolet Tahoe
1,083 Great Deals out of 32,100 listings starting at $1,495
Used Chevrolet Camaro
629 Great Deals out of 39,686 listings starting at $2,995
Used GMC Sierra 2500
187 listings starting at $5,995

Used Cars For Sale

2017 GMC Sierra 1500 For Sale
6 Great Deals out of 28,516 listings starting at $23,800
2016 GMC Sierra 1500 For Sale
77 Great Deals out of 7,006 listings starting at $19,400
2015 GMC Sierra 1500 For Sale
205 Great Deals out of 4,729 listings starting at $15,988
2014 GMC Sierra 1500 For Sale
213 Great Deals out of 4,501 listings starting at $14,971
2013 GMC Sierra 1500 For Sale
157 Great Deals out of 2,613 listings starting at $9,994