1998 GMC hit pot hole and died on the spot

Asked by Apr 20, 2014 at 07:20 PM about the GMC Sierra 1500

Question type: Maintenance & Repair

98 gmc 1/2 ton, quit running after hitting a pot hole - died on the spot.  Figured it was the fuel pump - so replaced it - engine cranks, but will only run when gas is poured in the throttle body?  Any ideas?  I have checked the volts to the new fuel pump (8 volts to grey wire) only when cranking engine over, with  just the key on no power to the gray pump wire. I cannot hear the pump making any noise - wondering if the pump I put in might be a faulty ?? I have switched the starter and the fuel pump relay to see if it was faulty but no difference.  Any Ideas ??

2 Answers

18,525

with key on engine off the pump should run 3 seconds and quit. the jolt may have shook a vital plugin jack to unconnect if your not getting a cranking from starter your ground wire may be it

1 out of 1 people think this is helpful.

thanks that was my guess also, If I ground out the black wire on the pump to a new ground source (for testing purposes only) should the pump work if it is only a ground wire issue? Where would the original ground wire go to ground.

Your Answer

Add photo

Related Questions

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 Chevrolet Silverado 1500
2,703 Great Deals out of 148,972 listings starting at $995
Used Ford F-150
3,446 Great Deals out of 206,231 listings starting at $1,273
Used GMC Sierra 2500HD
133 Great Deals out of 13,587 listings starting at $1,500
Used Dodge Ram 1500
546 Great Deals out of 13,018 listings starting at $1,800
Used Toyota Tundra
705 Great Deals out of 28,578 listings starting at $2,500
Used Chevrolet Silverado 2500HD
382 Great Deals out of 28,634 listings starting at $2,295
Used Ram 1500
1,437 Great Deals out of 116,465 listings starting at $6,999
Used Toyota Tacoma
798 Great Deals out of 33,979 listings starting at $2,499
Used GMC Yukon
542 Great Deals out of 17,622 listings starting at $1,777
Used Chevrolet Tahoe
1,098 Great Deals out of 31,959 listings starting at $1,495
Used Ford F-250 Super Duty
486 Great Deals out of 42,908 listings starting at $2,850
Used GMC Sierra 1500HD
7 Great Deals out of 124 listings starting at $4,988
Used Chevrolet Camaro
656 Great Deals out of 39,477 listings starting at $3,495
Used GMC Canyon
158 Great Deals out of 8,258 listings starting at $3,500
Used GMC Sierra 2500
3 Great Deals out of 184 listings starting at $6,990