I took the bed off my GMC 1500 1990 truck and changed the fuel pump, it started fine, put the bed back on it and now it will not start, what happened?

Asked by Jan 18, 2015 at 07:47 AM about the 1990 GMC Sierra 1500 C1500 Standard Cab SB

Question type: Maintenance & Repair

the truck would not start so we took the bed off and changed the fuel pump. It started and run fine, we even drove it down the rode. After we put the bed back on the truck the truck would not start. Help!

1 Answer

7,610

I had one like this once and there was trouble with the connector. Have a friend keep keying up and shutting off to verify the start up 1-2 sec interval. Then you go with your test light or voltmeter, verify power and ground, an what one is the sender. If you have loose fitting tubes in the connector it can come and go by moving it around perhaps. Has to fit snug at each wire to pass current.

Your Answer

Add photo

Related Questions

Search GMC Sierra 1500 Questions

GMC Sierra 1500 Experts

#1 dragonflyoffshore
dragonflyoffshore
Reputation 4,800
#2 John Saffrahn
John Saffrahn
Reputation 3,380
#3 Glenn Clingenpeel
Glenn Clingenpeel
Reputation 2,960
View All

Related Models For Sale

Used Ford F-150
2,692 Great Deals out of 212,369 listings starting at $1,000
Used Chevrolet Camaro
280 Great Deals out of 38,300 listings starting at $1,250

Used Cars For Sale

2017 GMC Sierra 1500 For Sale
23 Great Deals out of 35,678 listings starting at $23,699
2016 GMC Sierra 1500 For Sale
54 Great Deals out of 3,970 listings starting at $18,219
2015 GMC Sierra 1500 For Sale
119 Great Deals out of 4,045 listings starting at $14,988
2014 GMC Sierra 1500 For Sale
150 Great Deals out of 4,388 listings starting at $14,495
2013 GMC Sierra 1500 For Sale
89 Great Deals out of 2,375 listings starting at $9,988