P0380 - Chevy and GMC Duramax Diesel Forum
01-04.5 LB7 Duramax Powertrain Discussion of components that are directly involved in the power production and all that is needed to get and keep the truck moving . Engine , Transmission Ect

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Old 11-04-2008, 11:50 AM   eBay Motors  #1 (permalink)
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P0380

So its an 02 with ~95K on the clock and is showing up with the P0380 code. Question is, how do you check to see if its a glow plug or the controller? I reset the codes with my PPE and sure enough it came back on. Was buying some stuff from autozone and thought I'd have them use their scanner on it and they pulled the P0380 code as well- and according to their computer, "The PCM has determined that a malfunction exists in the electrical circuit for glow plug/heater circuit "A"". Have plenty of tools and enough time to mess around with this- so I'm definitely not taking this to the stealership. Any help is much appreciated.
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Old 11-04-2008, 06:18 PM   eBay Motors  #2 (permalink)
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My 02 had the same code coming up. I took it to a dealer for it and gave them the recall or extended warranty info on the glow plugs that I had found (10year 200k). They said my truck fell into the warranty and checked it for free. Turned out to be the controller. Their price was $150 but I got it off Parts.com for like $70 or something.
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Old 11-04-2008, 06:19 PM   eBay Motors  #3 (permalink)
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As for checking it yourself my controller had no power going out of it to any of the glow plugs so I would check the wires feeding out to see if there is juice.
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Old 11-06-2008, 07:02 AM   eBay Motors  #4 (permalink)
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You dont happen to have the recall/extended warranty info by chance do ya?
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Old 11-06-2008, 06:59 PM   eBay Motors  #5 (permalink)
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Here is the info I found,

Subject:07057 -- SPECIAL COVERAGE ADJUSTMENT - ENGINE GLOW PLUG


Models:2002-04 Chevrolet Silverado
2002-04 GMC Sierra
Equipped with 6.6L Diesel V8 (RPO LB7 - VIN 1) Engine; and California Emissions (YF5/NE1), or Clean Fuel Emissions (VCL)



Condition

Some customers of 2002-04 model year Chevrolet Silverado; and GMC Sierra trucks, equipped with a 6.6L diesel V8 (LB7) engine, and California emissions (YF5/NE1), or Clean Fuel Fleet emissions (VCL), may experience a condition where the engine glow plugs may fail. Failure of the glow plugs on these vehicles will cause illumination of the MIL. Also, depending on the ambient cold start conditions and the number of glow plugs failing open, some customers may also comment about hard starting, misfiring and white smoking after cold start.
Special Coverage Adjustment

This special coverage covers the condition described above for a period of 10 years or 200,000 miles (320,000 km), whichever occurs first, from the date the vehicle was originally placed in service, regardless of ownership.
Dealers are to replace failed glow plug(s). The repairs will be made at no charge to the customer.
For vehicles covered by Vehicle Service Contracts, all eligible claims with repair orders on or after February 13, 2008 are covered by this special coverage and must be submitted using the labor operation codes provided with this bulletin. Claims with repair orders prior to February 13, 2008 must be submitted to the Service Contract provider.
Vehicles Involved

Involved are certain 2002-04 model year Chevrolet Silverado; and GMC Sierra trucks, equipped with a 6.6L diesel V8 (LB7) engine, and California emissions (YF5/NE1), or Clean Fuel Fleet emissions (VCL) and built within the following VIN breakpoints:
Year
Division
Model
From
Through
2002
Chevrolet
Silverado
2E100004
2E306366
2002
Chevrolet
Silverado
2F100004
2F244420
2002
GMC
Sierra
2E100046
2E305909
2002
GMC
Sierra
2F100034
2F244422
2003
Chevrolet
Silverado
3E100006
3E378716
2003
Chevrolet
Silverado
3F100003
3F259024
2003
GMC
Sierra
3E100066
3E381049
2003
GMC
Sierra
3F100146
3F259028
2004
Chevrolet
Silverado
4E100143
4E219578
2004
Chevrolet
Silverado
4F100082
4F174734
2004
GMC
Sierra
4E100062
4E221355
2004
GMC
Sierra
4F100094
4F174119
<A href="http://gsi.xw.gm.com/si/showDoc.do?docSyskey=2064397&from=bcpi#ss4-2064397">
Parts Information

Parts required to complete this special coverage are to be obtained from General Motors Service and Parts Operations (GMSPO).
Part Number
Description
Qty/ Vehicle
97226202
Plug, Glow
As required
<A href="http://gsi.xw.gm.com/si/showDoc.do?docSyskey=2064397&from=bcpi#ss5-2064397">
Customer Notification

General Motors will notify customers of this special coverage on their vehicles (see copy of typical customer letter included with this bulletin - actual divisional letter may vary slightly).
<A href="http://gsi.xw.gm.com/si/showDoc.do?docSyskey=2064397&from=bcpi#ss6-2064397">Service Procedure

Refer to SI for glow plug DTC P0380 (California RPO YF5, NE1, NF4, VCL) diagnostics; and replacement procedures.
<A href="http://gsi.xw.gm.com/si/showDoc.do?docSyskey=2064397&from=bcpi#ss7-2064397">Claim Information

For vehicles repaired under the terms of this special coverage, submit a claim with the information indicated below:
Repair Performed
Part Count
Part No.
Parts Allow
CC-FC
Labor Op
Labor Hours
Net Item
Replace glow plug(s): Left or Right Bank
Diagnosis Time
--
97226202
*
MK-95
T5695
0.6 each bank
Add: 0.0-0.3
N/A
Customer Reimbursement (US CAC)
N/A
N/A
N/A
MK-95
T5696
N/A
**
* The "Parts Allowance" should be the sum total of the current GMSPO Dealer net price plus applicable Mark-Up or Landed Cost Mark-Up (for Export) for glow plug(s) needed to complete the repair.
** The amount identified in the "Net Item" column should represent the customer reimbursement amount.
<A href="http://gsi.xw.gm.com/si/showDoc.do?docSyskey=2064397&from=bcpi#ss8-2064397">
Customer Reimbursement - For US

All customer requests for reimbursement for previous repairs for the special coverage condition will be handled by the Customer Assistance Center, not by dealers.
A General Motors Customer Reimbursement Procedure and Claim Form is included with the customer letter.
Important: Refer to the GM Service Policies and Procedures Manual, section 6.1.12, for specific procedures regarding customer reimbursement and the form.
If the work was done by someone other than a GM dealership, the amount of reimbursement will be limited to the amount that the repair would have cost GM to have it completed by a GM dealership.
<A href="http://gsi.xw.gm.com/si/showDoc.do?docSyskey=2064397&from=bcpi#ss9-2064397">Courtesy Transportation

The General Motors Courtesy Transportation program is intended to minimize customer inconvenience when a vehicle requires a repair that is covered by the New Vehicle Limited Warranty. The availability of courtesy transportation to customers whose vehicles are within the warranty coverage period and involved in a product program is very important in maintaining customer satisfaction. Dealers are to ensure that these customers understand that shuttle service or some other form of courtesy transportation is available and will be provided at no charge. GM dealers should refer to the General Motors Service Policies and Procedures Manual for Courtesy Transportation guidelines.
February 2008
Dear General Motors Customer:
As the owner of a 2002-04 model year Chevrolet Silverado or GMC Sierra truck, your satisfaction with our product is very important to us.
This letter is intended to make you aware that some 2002-04 model year Chevrolet Silverado; and GMC Sierra trucks, equipped with a 6.6L diesel V8 engine, and California emissions or Clean Fuel Fleet emissions, may experience a condition where the engine glow plugs may fail. This will cause illumination of the Malfunction Indicator Light (MIL). Depending on the ambient cold start conditions and the number of glow plugs failing open, some customers may also comment about hard starting, misfiring and white smoking after cold start.
Do not take your vehicle to your General Motors dealer as a result of this letter unless you believe that your vehicle has the condition as described above.
What We Have Done:
General Motors is providing owners with additional protection for the engine glow plugs. If this condition occurs on your 2002-04 model year Chevrolet Silverado or GMC Sierra truck, equipped with a 6.6L diesel V8 (LB7) engine, and California emissions or Clean Fuel Fleet emissions, within 10 years of the date your vehicle was originally placed in service or 200,000 miles (320,000 km), whichever occurs first, the condition will be repaired for you at no charge . Diagnosis or repair for conditions other than the condition described above is not covered under this special coverage program.
What You Should Do:
Repairs and adjustments qualifying under this special coverage must be performed by a General Motors dealer. You may want to contact your GM dealer to find out how long they will need to have your vehicle so that you may schedule the appointment at a time that is convenient for you. This will also allow your dealer to order parts if they are not already in stock. Keep this letter with your other important glove box literature for future reference.
Reimbursement:
The enclosed form explains what reimbursement is available and how to request reimbursement if you have paid for repairs for the special coverage condition. Your request for reimbursement, including the information and documents mentioned on the enclosed form, must be received by GM by February 28, 2009.
If you have any questions or need any assistance, just contact your dealer or the appropriate Customer Assistance Center at the number listed below.
Division
Number
Text Telephones (TTY)
Chevrolet
1-800-630-2438
1-800-833-2438
GMC
1-866-996-9463
1-800-462-8583
Guam
1-671-648-8450

Puerto Rico - English
1-800-496-9992

Puerto Rico - Espaņol
1-800-496-9993

Virgin Islands
1-800-496-9994


We are sorry for any inconvenience you may experience; however we have taken this action in the interest of your continued satisfaction with our products.
General Motors Corporation
Enclosure
07057
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Old 11-06-2008, 07:02 PM   eBay Motors  #6 (permalink)
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I orginally thought it was for only emission vehicles but my trucks vin fit in the effected vehicles I just gave the dealer the number of the recall 07057 and they checked my vin and said to bring it in that warranty would check it and if the glow plugs were bad they would be replaced free! But like I said mine was the module.

Hope this info helps
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Old 11-09-2008, 05:24 AM   eBay Motors  #7 (permalink)
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The extended warranty is only for 02-04 LB7 California/ clean fleet emission trucks with the 2 RPO codes listed at the top of the bulletin. If your truck has California/clean fleet emissions it will have an EGR valve, a belt driven vacuum pump and several vacuum control solenoids on top of the fuel filter. This extended warranty only covers the glow plugs. It does not cover the glow plug controller.

The difference is that California/clean fleet emissions trucks have the ability to detect if any 1 or more glow plugs fail. The non California/clean fleet emission trucks can only detect if the glow plugs are getting power to them.

So if a non California emission truck sets a P0380 it probably needs a glow plug controller. If a California/clean fleet emission truck sets a P0380 the is probably has one or more glow plugs bad.
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Old 11-11-2008, 07:54 AM   eBay Motors  #8 (permalink)
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Thanks guys. Duramaxdr that is a good advice, and since its a non CA emissions truck I'm going to check the controller. Don't happen to know where its located do you? Am I just looking for output voltage, or a specific range on the output voltage? I know you check it when the truck is cold.
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Old 11-11-2008, 04:34 PM   eBay Motors  #9 (permalink)
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Mine isn't a CA truck either so I must have slipped one by the local dealer!! It is located next to the firewall on the driver side above the valve cover(just off the center of the truck). Its a black box that has a cover that comes off part of it and like three electical posts. They gave me a wiring diagram and wrote on it that there was no voltage coming out of it not any specific range.
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Old 11-11-2008, 04:40 PM   eBay Motors  #10 (permalink)
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^^^^exactly.

Fed emmisions vehicles have individually wired glow plugs as DuramaxDr said whereas the non fed emissions dont.

On a side note if you plan to attempt to replace the glow plugs be very careful. They do have a tendancy to snap off in the heads. Sometimes its best to let the dealer assume the liabilty.
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