20 Most Recent 2003 GMC Sonoma Questions & Answers


Maybe there are videos on youtube showing how .

2003 GMC Sonoma | Answered on Mar 16, 2017


Powertrain Control Module (PCM)
On the right side of the engine compartment

2003 GMC Sonoma | Answered on Nov 10, 2016


If compressor is not kicking in, low pressure will be too high. If Compressor IS kicking on, orifice tube may be blocked, or compressor may be bad. You need a full manifold set to work on AC, not just the gauge that comes on a refill can.

2003 GMC Sonoma | Answered on Jul 18, 2016


Sounds like you have a blown fuse or relay

2003 GMC Sonoma | Answered on Jun 10, 2016


What makes you think the IAC is the problem? Highly unusual to change this valve as much as you have in the time fame indicated. What are the symptoms?

2003 GMC Sonoma | Answered on Mar 01, 2016


fill until it runs out of the fill hole

2003 GMC Sonoma | Answered on Jan 05, 2016


Sounds as if the ignition cylinder has an internal problem. You may have a sticky wafer inside the cylinder. You can try using some WD 40 and inserting the straw inside the cylinder and giving it a good spray. You can also try gently rocking the steering wheel back and forth while trying to turn the key. With out the ignition cylinder turning, the gearshift will not come out of park nor will the steering wheel come unlocked. Hop this helps

2003 GMC Sonoma | Answered on Jul 08, 2015


The filter is located by the driver side underneath the truck. Following the fuel line coming out of the fuel tank will also help you to find the filter.

2003 GMC Sonoma | Answered on Apr 28, 2015


Driver's side of truck on the inside of the frame rail in front of the fuel tank.

2003 GMC Sonoma | Answered on Apr 28, 2015


That should not have happened ! Did you disconnect and forget to reconnect, or otherwise damage, the security wires running to the ignition switch ?

2003 GMC Sonoma | Answered on Mar 10, 2015


well is the fluid discolored brownish looking instead of red or rose pink if so it might help a little if its like described there's something wrong the cooling system is not cooling it off the right way running hotter then normal there could be a broken vacuum line causing the late shift and that will make the fluid burn you could be hard on the gas and this makes a transmission shift late and on an old truck that's 13 years old now released in 2002 and the combo of not changing it for long periods of time /driving habits/cooling the fluid the lines go through the radiator to the trans cooler that's inside it this will take down a transmission in a short time that's brand new and will surely destroy and older one but maybe there's a chance you can catch it before its ruined and give it life till the summer

2003 GMC Sonoma | Answered on Feb 20, 2015


Could be a bad one even if its new it happens

2003 GMC Sonoma | Answered on Feb 25, 2014

Not finding what you are looking for?
2003 GMC Sonoma Logo

22 questions posted

Ask a Question

Usually answered in minutes!

Popular Products

1999 GMC Sonoma
1999 GMC Sonoma

391 Questions

1996 GMC Sonoma
1996 GMC Sonoma

352 Questions

1995 GMC Sonoma
1995 GMC Sonoma

263 Questions

1998 GMC Sonoma
1998 GMC Sonoma

259 Questions

1997 GMC Sonoma
1997 GMC Sonoma

242 Questions

Top GMC Experts

Marvin
Marvin

Level 3 Expert

85216 Answers

Jonah Oneal

Level 3 Expert

14092 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22485 Answers

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

Answer questions

Manuals & User Guides

View Most Popular

Sonoma GMC

  • Sonoma GMC

Most Popular Question

pcm located 2003 gmc sonoma

  • Cars & Trucks
Loading...