Where to buy fuel inj harness parts?

bjohnson · 10-02-2009, 08:19 PM

My 05 LLY has a code P0452 (Evapoative Emission System Pressure Sensor/Switch Low Input), to my knowledge I need the fuel inj wiring harness upgrade from GM part #98017958. Went to the GM dealer and he quoted me $400 + for two small clips and a splice kit.
Could anyone offer suggestions on finding this part cheaper, seems like alot of money for two small connectors.

Thanks,
Brian

**jc1843** · 10-03-2009, 07:09 AM

I think the code is wrong-- diesels do not have a evaporative system such as the gas vehicles.

You may have a problem such as these--

That problem is usually caused by a loose connector at the injector. The cheap fix that will last, is to remove the connector, place it against something flat, and push a SHARP ice pick into both terminals. This will raise a dimple inside the connector for a better contact. Do this for #2 and #7 injectors. (The cylinders are numbered from the front--- passenger side- 1-3-5-7 and the drivers side is 2-4-6-8)

Also inspect the FICM harness at the alternator for shorts and wear-through. The harness gets cut and shorts by contact with the sharp corner of the bracket.

These are common problems for the LLY engine. Everyone that has a LLY should know how to do this and have a sharp ice pick in the glove box!

bjohnson · 10-03-2009, 10:51 AM

Thanks, I have been doing the ice pick fix and the problem has become repetative, I am no thinking that the connectors require replacement. I have managed to fine the connector kit for $150 thru gmpartsdirect.com so this might be my best option.

Thanks,
Brian

duramax driver · 10-10-2009, 05:48 PM

just had that problem on my 05 gmc and the dealer would not fix it on warranty. so I had merchant automotive in Zeeland Michigan replace those parts for $300 including labor.