Question about 2004 GMC Sonoma

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Gmc sonoma loss of power RPMs will not exceed 1800

My sonoma has lost power while driving sounds like fuel starving and unable to build RPMs and vehicle unable to do more than 30 mph

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Posted on Jan 02, 2017

  • 231 Answers

SOURCE: 2001 GMC Sonoma Engine stopped while driving

sounds like it could be plugged injectors or a timing problem.

Posted on Oct 27, 2008

  • 71 Answers

SOURCE: where is the fuel shutoff switch on a 1996 gmc sonoma?

no fuel shut off switch on pickups that i know of possibly bad fuel pump find your red bypass wire at relay to test pump

Posted on Mar 29, 2009

  • 1 Answer

SOURCE: gmc 94 sonoma

try the fuel pump relay... had the same problem... 94 sonoma .. it's the one up under the dash... cost me 400.... i didnt know where the darn thing was!!! chaeck all the normal stuff first...

Posted on May 20, 2009

  • 3600 Answers

SOURCE: 2001 GMC Sonoma Ext cab 4.3l, quit while running

Pull plug wire and install a philips screwdriver into the plug wire get it 1/4 inch away from a good ground and crank the engine over, is there spark? if so check that you have fuel pressure buy renting a fuel pressure test kit from schucks or auto zone and turn the Key to run position with the gage hooked up, it should read 50 PSI turn key off and wait 20 seconds should still have 20 PSI of fuel pressure, if no fuel pressure check fuel pump relay, then check fuse to pump. if you have a bad relay and are not getting fuel then check the oil pressure switch to see if you have oil pressure at the switch if no pressure then the oil pressure safety switch has died and needs to be replaced and should stark after replacing. If you have fuel then check the timing to see if you slipped timing belt.

Posted on Jun 12, 2009

  • 11196 Answers

SOURCE: my 99 gmc sonoma wil start and drive fine untill i

if no codes yet check and clean egr valve ,pcv valve,air filter and/ fuel pump and pressure regulator may b dropping under load

Posted on Oct 27, 2009

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2001 GMC Sonoma Engine stopped while driving


sounds like it could be plugged injectors or a timing problem.

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