Question about 1997 GMC Sierra

Open Question

1997 gmc sierra 5.7L. Engine will turn over, but won't start. It has spark and fuel, at least to the throttle body. i've replaced the fuel pump 5 or 6 times in the last three years. it'll run fine, usually, for 3 months to a year. fuel supply doesn't seem to be the problem. it might be coincidence. but it seems to be able to start whenever i do anything that relieves the fuel pressure in the system.

Posted by on


6 Suggested Answers

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017

  • 655 Answers

SOURCE: 2004 GMC Sierra Computer reset ??

I would suggest stopping by an AutoZOne or O'Reilly's and "borrow" their Scan Tool to erase any codes.
TO reset the "Change Oil" light, turn the ignition to ON (do NOT start the car). Press the accelerator pedal all the way down (then release) to the floor 3 times in less than 5 seconds. Change Oil light should flash then go off. If not, try it again. The trick is to get this done in 5 seconds ro less.

Posted on Apr 01, 2010

Testimonial: "One question answered correctly but the second question was misunderstood."

  • 182 Answers

SOURCE: 1996 GMC Sierra 1500 truck fuel problem

Have you check the injector relay or maybe a fuse for injectors.

Posted on Aug 27, 2008

  • 141 Answers

SOURCE: 1998 GMC Sierra won't fire and run


Posted on Feb 13, 2009

  • 318 Answers

SOURCE: throttle body injectors not fiering but there is fuel pressure

the injectors are fired thru the engine cotrol module but it gets its signal to fire from the pick-up located inside the distributor if you are loosing injector pulse only the ignition module is bad if you are also loosing spark when you loose injector pulse your pick up is causing the problem if you replace the pick-up i recomend you change the ignition module when doing so because they work together and you have to remove the distributor to change the pick-up

Posted on May 31, 2009

GM Elec
  • 1000 Answers

SOURCE: I have a 99 suburban that has 203,000 miles. It

I believe you have a fuel regulator weak or dirty injectors.
Try turning the key to the "on" position ( do not try and start) wait until fuel pump stops running (3-5 seconds or so ), turn the key off and immediatly repeat for 3 cycles. On the 4th key rotation, start the vehicle. Does it seem to start up faster?
If so, the regulator is weak, however, the fuel pump does have a check valve in it to prevent fuel from leaking back into the pump and maintain line pressure.
Try the diagnostic proceedure above first and we can go from there.
Good luck, let me know.

Posted on Jul 15, 2009

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

2006 GMC Sierra 2500 series replaced throttle body sensor and fuel pump getting fire and gas but will not start

Do you have spark at the spark plugs ? Also are there any lights lit on the instrument cluster , check engine , SECURITY ? What throttle body sensor did you replace ? TPS -throttle position sensor ! What engine does yours have because there are a few options for this vehicle , 4.3 , 4.8 , 5.3 , 6.0 L !

Apr 12, 2015 | GMC Cars & Trucks

3 Answers

Why wont my 1998 gmc 3500 sierra turn over

Check for fuel by pouring small amount of clean gas down throttle body and crank engine over. if it starts and runs just for a few seconds you have a fuel delivery problem. If it still does not run after several attempts check for spark at spark plugs. that should get diagnosis started

Aug 03, 2014 | 1998 GMC Sierra

1 Answer

1997 gmc sierra will not run

sounds like a bad injector system there known for it

Sep 03, 2012 | GMC Sierra Cars & Trucks

1 Answer

1997 5.7ltr gm truck...wont start. Replaced fuel pump, and relay. Has a carbon build up in the throttle body. Turns over/wont start

check for spark if there is no fuel coming out of injectors you can borrow noid lights from orielies auto parts check the injectors for pulse width if you have no pulse your computer is bad if vyou have no spark remove dist ributer cap and see if rotor turns while cranking if it does check for spark between coil and dist if no spark you more then likely have a bad ignition module

Mar 27, 2012 | 1993 GMC Sierra K1500

1 Answer

My 1993 gmc truck wont start it cranks over but doesnt start

Are you getting fuel? if the pump is out then you won't get fuel and it won't start. Check for fuel at the throttle body under the air cleaner also pull a plug and connect it to the wire and ground it to the engine block to see if your getting spark. try this and let me know. I suspect the fuel pump since these last around 8-10 years before they just quit.

Jul 14, 2011 | 1994 GMC Sierra

1 Answer

1997 GMC Sierra- won't start unless you put fuel in the throttle body, but runs good until you turn it off. You have to use the fuel in the throttle body every time you want to crank it. What's wrong? Any...

Start injectrer deffcctive (unlikely) or out of circit!
But more likely fuel preshure is douwn! check your fuel pump for preshure, once started the engine can live with that for a time I think you will find it is that!
Pleased to be of help.........Bruce

Mar 15, 2010 | 1997 GMC Sierra

2 Answers

Truck turn over but won,t start fire on plugs

You could have a dirty fuel filter or weak fuel pump. Check the fuel pressure at the shredder valve and make sure there is 62-65 PSI, anything less then that will cause the fuel injectors not to work. You can try spraying Carb cleaner down the throttle body and if the engine starts, you have a fuel pressure issue. Try the simple and replace the fuel filter and check the wire harness to the fuel pump sending unit, common for the ground to go bad at the frame of the truck causing the weak fuel pump. Good luck and keep me posted.

Feb 22, 2010 | 1997 GMC Sierra

1 Answer

Wont start

fuel pump maybe

Mar 13, 2009 | 1993 GMC Sierra K1500

3 Answers

1996 GMC Sierra 1500 truck fuel problem

Have you check the injector relay or maybe a fuse for injectors.

Aug 26, 2008 | 1996 GMC Sierra

Not finding what you are looking for?
1997 GMC Sierra Logo

Related Topics:

196 people viewed this question

Ask a Question

Usually answered in minutes!

Top GMC Experts


Level 3 Expert

76164 Answers


Level 3 Expert

1311 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22156 Answers

Are you a GMC Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides