Will an 01 Silverado 6 liter engine provide spark if the fuel pump is defective

Asked by Sep 29, 2015 at 07:15 PM about the 2001 Chevrolet Silverado 2500HD

Question type: Maintenance & Repair

Will 6 liter Vortec engine provide spark if fuel pump
is defective hooked up timing light to spark plug wire
did not get a light

5 Answers

35,795

If you are sure the fuel pump relay is working, check continuity from the pump to the relay socket. These wires love to corrode. When you turn your ignition on, the fuel pump will only run for a couple seconds before it shuts off via the automatic shutdown relay. Make sure you are checking power within this window. The PCM (powertrain control module) is what completes the ground in order for the relay to send power to the pump. If the PCM does not receive a signal from several sensors (mainly the Crank Sensor) it will not turn on the pump. You may want to check these sensors, is the check engine light on? You can scan it to see if any sensors have thrown a code. Be sure all applicable fuses are ok, the PCM may have its own fuse, check that even if the fuel pump fuse is ok. Your Truck may also have an inertia switch for the fuel pump which shuts it off during an accident. Check that as well.

Not sure about relay. Truck was running perfect shut it down and hour later wouldn't start

270

Rule out the obvious first. There are too many items to check narrow it down. Do you have any silly lights/warning lights on truck or key security light on? Then check to see why you have no spark/current going to plugs and fuel..? All these are vital to starting car

1 out of 1 people think this is helpful.

No there are no warning lights or other warning symbols I'm going to check fuel pump relay in the morning if I prove it to be bad fuel pump which I'm leaning toward debating on whether to pull my bed off or drop the tank

10

Had the same problem. Tried everything even grounding but nothing worked. As I researched other potential causes I found that the security system was possibly my problem. We changed the security switch in the steering column. Has worked perfectly ever since.

1 out of 1 people think this is helpful.

Your Answer

Add photo

Related Questions

Silverado 2500HD

Looking for a Used Silverado 2500HD in your area?

CarGurus has 25,709 nationwide Silverado 2500HD listings starting at $2,500.

ZIP:

Search Chevrolet Silverado 2500HD Questions

Chevrolet Silverado 2500HD Experts

#1 Steven Loeffler
Steven Loeffler
Reputation 420
#2 FordNut
FordNut
Reputation 280
#3 Tom Demyan
Tom Demyan
Reputation 270
View All

Related Models For Sale

Used GMC Sierra 2500HD
137 Great Deals out of 13,466 listings starting at $2,997
Used Ford F-250 Super Duty
396 Great Deals out of 45,084 listings starting at $2,000
Used Chevrolet Silverado 1500
2,286 Great Deals out of 155,167 listings starting at $1,395
Used Dodge Ram 2500
151 Great Deals out of 5,500 listings starting at $2,500
Used Ford F-150
2,692 Great Deals out of 212,369 listings starting at $1,000
Used Chevrolet Silverado 2500
10 Great Deals out of 318 listings starting at $3,995
Used GMC Sierra 1500
935 Great Deals out of 62,272 listings starting at $1,395
Used Ford F-350 Super Duty
420 Great Deals out of 27,098 listings starting at $2,999
Used Chevrolet Silverado 1500HD
18 Great Deals out of 297 listings starting at $3,950
Used Toyota Tundra
584 Great Deals out of 30,719 listings starting at $2,637
Used Chevrolet Silverado 3500
21 Great Deals out of 620 listings starting at $6,495

Used Cars For Sale

2017 Chevrolet Silverado 2500HD For Sale
10,789 listings starting at $22,452
2016 Chevrolet Silverado 2500HD For Sale
19 Great Deals out of 4,396 listings starting at $23,523
2015 Chevrolet Silverado 2500HD For Sale
58 Great Deals out of 2,074 listings starting at $22,500
2014 Chevrolet Silverado 2500HD For Sale
17 Great Deals out of 584 listings starting at $16,995
2013 Chevrolet Silverado 2500HD For Sale
9 Great Deals out of 1,063 listings starting at $11,995