GM

GM Repair Problems? Ask GM Repair Expert Now.

Ask an Expert,
Get an Answer ASAP!

GM

p0202/p2149 is it a wiring issue ,fuel delivery,injector

Customer Question
p0202/p2149 is it a...
p0202/p2149 is it a wiring issue ,fuel delivery,injector
Submitted: 8 years ago.Category: GM
Show More
Show Less
Ask Your Own GM Question
Answered in 16 minutes by:
10/29/2009
GM Mechanic: GMC Expert, ASE Certified Technician replied 8 years ago
GMC Expert
GMC Expert, ASE Certified Technician
Category: GM
Satisfied Customers: 10,370
Experience: 30 yrs experience, ase certified, shop owner
Verified

YES THIS IS MOST COMMONLY A WIRING PROBLEM IN THE INJECTOR HARNESS,

Tests/Procedures:1. Perform an injector balance test and check for cylinders 2 and/or 7 not contributing. Replace the injector wiring harness connector and install a support bracket from the service kit.

2. Refer to TSB #05-06-04-047B (03/14/2006).

3. If the problem is not isolated to cylinders 2 and/or 7, replace the wiring harness. Refer to TSB #06-06-04-026 - (04/27/2006)

Ask Your Own GM Question
Customer reply replied 8 years ago
check TSB where?
GM Mechanic: GMC Expert, ASE Certified Technician replied 8 years ago

TECHNICAL

Bulletin No.: 05-06-04-047C

Date: April 23, 2008

Subject:
Service Engine Soon (SES) Light On with Reduction in Engine Power, DTCs P0202 and P2149 or P0207 and P2146 or P1294 Set (Install Revised 90 Degree Injector Connector with Harness Support Bracket Service Kit)

 

Models:
2004-2005 Chevrolet Silverado
2004-2005 Chevrolet Kodiak C4500/C5500 Series
2004-2005 GMC Sierra
2004-2005 GMC Topkick C4500/C5500 Series

 

with 6.6L Duramax(TM) Diesel Engine (VIN 2 - RPO LLY)

Supercede:

This bulletin is being revised to add DTC P1294 to Subject Line and Condition Statement. Please discard Corporate Bulletin Number 05-06-04-047B (Section 06 - Engine/Propulsion System).

Condition

Some customers may comment on the Service Engine Soon light becoming illuminated along with a severe reduction in engine power (limp home mode). Upon investigation, the technician may find DTCs P0202 and P2149 or P0207 and P2146 or P1294.

Cause

The injector connector circuits on cylinders 2 and 7 are not fully supported near the connector and are more susceptible to terminal breakage from engine vibration.

Correction

If published diagnostics lead to an injector connector install the revised 90 degree connector and the harness support bracket from the service kit P/N 98017958 using the following repair procedures.

Repair Procedure for Left Bank Cylinder Number 2

1.Disconnect the negative battery cables. Refer to Service Information (SI) for the Battery Negative Cable Disconnect/Connect Procedure (Single Battery) and Battery Negative Cable Disconnect/Connect Procedure (Auxiliary Battery).

 

2.Remove the left wheelhouse panel. Refer to Service Information (SI) for the Wheelhouse Panel Replacement.

 

3.Remove the left charge air cooler inlet pipe. Refer to Service Information (SI) for the Charged Air Cooler Hoses/Pipes Replacement (Left).

 

4.Disconnect cylinder number 2 and cylinder number 4 fuel injector harness connectors.

 

5.Remove the cylinder number 2 glow plug connector nut and remove the cylinder number 2 glow plug harness connector from the glow plug.

 

6.Remove the fuel injector harness bracket bolt.

 

7.Cut the tape to remove the fuel injector harness bracket and discard the bracket.

 

8.Cut cylinder number 2 fuel injector connector off the engine harness approximately 38.1 mm (1.5 in) away from the base of the connector.

 

Important: It is not necessary to maintain the same polarization of the injector circuits.

 

9.Strip approximately 1/4 inch of insulation from both fuel injector circuits and using the supplied Duraseal(R) connectors crimp the new 90 degree fuel injector connector to the engine harness.

 

10.Use an Ultra Torch or equivalent to shrink the tubing and set the glue in the Duraseal(R) connectors.

 

11.Secure the Duraseal® connectors with electrical tape.

 

12.Position the new injector harness bracket to align with the bracket bolt hole and secure to the harness with electrical tape.

 

13.Install the new injector harness bracket and original bolt.

 

Tighten

Tighten the fuel injector harness bracket bolt to 10 N.m (89 lb in).

14.Install the cylinder number 2 glow plug harness connector and nut.

 

Tighten

Tighten the glow plug harness connector nut to 2 N.m (18 lb in).

15.Connect the cylinder number 2 and cylinder number 4 fuel injector harness connectors.

 

16.Install the left charge air cooler inlet pipe. Refer to Service Information (SI) for the Charged Air Cooler Hoses/Pipes Replacement (Left).

 

17.Install the left wheelhouse panel. Refer to Service Information (SI) for the Wheelhouse Panel Replacement.

 

Repair Procedure for Right Bank Cylinder Number 7

1.Remove the fuel filter assembly bolts.

 

2.Position the fuel filter assembly out of the way.

 

3.Disconnect cylinder number 7 fuel injector harness connector and cut the number 7 fuel injector harness connector wires directly at the base of the connector.

 

Important: It is not necessary to maintain the same polarization of the injector circuits.

 

4.Strip approximately 1/4 inch of insulation from both fuel injector circuits and using the supplied Duraseal(R) connectors crimp the new 90 degree fuel injector connector to the engine harness.

 

5.Use an Ultra Torch or equivalent to shrink the tubing and set the glue in the Duraseal(R) connectors.

 

6.Secure the Duraseal® connectors with electrical tape.

 

7.Install the new injector harness bracket to the upper valve cover.

 

8.Install the injector harness bracket bolts supplied with the kit.

 

Tighten

Tighten the injector harness bracket bolts to 20 N.m (15 lb ft).

9.Connect the cylinder number 7 injector harness connector.

 

10.Install the injector harness to the bracket as shown.

 

11.Install the fuel filter assembly.

 

12.Install the fuel filter assembly bolts.

 

Tighten

Tighten the fuel filter assembly bolts to 20 N.m (15 lb ft).

13.Connect the negative battery cables. Refer to Service Information (SI) for the Battery Negative Cable Disconnect/Connect Procedure (Single Battery) and Battery Negative Cable Disconnect/Connect Procedure (Auxiliary Battery).

 

Ask Your Own GM Question
Customer reply replied 8 years ago
After doing wiring kit if it doesn't do the trick whats next
GM Mechanic: GMC Expert, ASE Certified Technician replied 8 years ago
REPLY BACK TO ME AND WE WILL GET TO SOME MORE TESTS, BUT THAT IS A VERY COMMON PROBLEM
GMC Expert
GMC Expert, ASE Certified Technician
Category: GM
Satisfied Customers: 10,370
Experience: 30 yrs experience, ase certified, shop owner
Verified
GMC Expert and 87 other GM Specialists are ready to help you
Ask your own question now
Ask GMC Expert Your Own Question
GMC Expert
GMC Expert
GMC Expert, ASE Certified Technician
Category: GM
Satisfied Customers: 10,370
10,370 Satisfied Customers
Experience: 30 yrs experience, ase certified, shop owner

GMC Expert is online now

A new question is answered every 9 seconds

How JustAnswer works:

  • Ask an ExpertExperts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional AnswerVia email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction GuaranteeRate the answer you receive.

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

I was having a terrible problem with the wheel bearings on my 98 Chevy Cavalier and I suspect that using this website saved me plenty of time and money.

Todd LRochester NY

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Mary C.Freshfield, Liverpool, UK

This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!!

AlexLos Angeles, CA

Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult.

GPHesperia, CA

I couldn't be more satisfied! This is the site I will always come to when I need a second opinion.

JustinKernersville, NC

Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around.

EstherWoodstock, NY

Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know.

RobinElkton, Maryland

< Previous | Next >

Meet the Experts:

GM Tech (Cam)

GM Tech (Cam)

GMC Mechanic

5,792 satisfied customers

GM Grand Master Technician 2007. 14 years experience.

Gary

Gary

GMC Technician

1,523 satisfied customers

15 years gm master tech/15 years ASE master tech

car tech

car tech

ASE Certified Technician

449 satisfied customers

25 year master tech and shop owner

Chris (aka- Moose)

Chris (aka- Moose)

GMC Technician

203 satisfied customers

16 years of experience

Paul M ASE Master

Paul M ASE Master

ASE Master Tech

187 satisfied customers

ASE Master Tech 20+ Years

Anthony

Anthony

GMC Technician

489 satisfied customers

GM Certified

Amedee

Amedee

GMC Technician

451 satisfied customers

ASE certified tech with advanced level specialist. Wisconsin certified emissions state inspector

< Previous | Next >

Related GM Questions
I have a 2007 Hummer H2 w a swing out spare tire mount. I
I have a 2007 Hummer H2 w a swing out spare tire mount. I would like to remove it. 1) is the removal of the swing arm simply an un-bolt or will I have to buy replacement parts. 2) I want to replace th… read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
Having trouble with chevy cobalt 2006, coolant temp on gage
having trouble with chevy cobalt 2006, coolant temp on gage in car reads 252F when I disconnect the coolant sensor the temperature drops to 232F, checked sensor with meter and tests ok, cooling fan ru… read more
Jaybird61
Jaybird61
Master Automotive Mechanic
1,882 satisfied customers
I have a 2007 Chevy Tahoe. I set the parking brake and I
I have a 2007 Chevy Tahoe. I set the parking brake and I can't get it to release back up. The Tahoe won't move.… read more
Chris (aka- Moose)
Chris (aka- Moose)
GMC Technician
Vocational, Technical or Trade School
203 satisfied customers
04 Yukon AC is cooling and suddenly starts blowing hot air,
04 Yukon AC is cooling and suddenly starts blowing hot air, I shut off engine and AC works OK.… read more
Aran
Aran
Technician
Associate Degree
392 satisfied customers
Need to check community on a 2011 gmc 1500 5.3 6 speed tcm
Need to check community on a 2011 gmc 1500 5.3 6 speed tcm what pins z would it be … read more
Chris (aka- Moose)
Chris (aka- Moose)
GMC Technician
Vocational, Technical or Trade School
203 satisfied customers
How do I find the engine size for my 2007 Hummer H3? I am
How do I find the engine size for my 2007 Hummer H3 ? … read more
Chris (aka- Moose)
Chris (aka- Moose)
GMC Technician
Vocational, Technical or Trade School
203 satisfied customers
I have a 2015 Cadillac Escalade and it just went over 50,000
Hello I have a 2015 Cadillac Escalade and it just went over 50,000 miles and I think I hear a squeaking noise in the rear shocks that's pretty faint when I go over large bumps slowly. Since the warran… read more
Jaybird61
Jaybird61
Master Automotive Mechanic
1,882 satisfied customers
Need some info for oil pan gasket for my chevy 99 express.
need some info for oil pan gasket for my chevy 99 express … read more
kalamykid
kalamykid
Pactor automotive
Vocational, Technical or Trade Scho
97 satisfied customers
What is the torque specs for the oil pan bolts? for the 4 in
What is the torque specs for the oil pan bolts? for the 4 in the corners and the rest small ones.… read more
kalamykid
kalamykid
Pactor automotive
Vocational, Technical or Trade Scho
97 satisfied customers
I have an ‘09 Acadia. It just started a few days ago kind of
I have an ‘09 Acadia. It just started a few days ago kind of bucking at about 65-70 mph. It sat for about a week with no prior issues. When I started it back up, this began happening … read more
eauto
eauto
self employed
High School or GED
74 satisfied customers
Change oil After 3000 miles there is NO oil left. 2 times
Change oil After 3000 miles there is NO oil left. 2 times now. And no indication that oil is low other than the oil pressure dropping down to about 21- usually around 60 on cold start and 42 or so whe… read more
Dan
Dan
Automotive Technician
Vocational, Technical or Trade Scho
25 satisfied customers
I have a 10 year old work truck, 1999 gmc Sierra 4wd ext cab
I have a 10 year old work truck, 1999 gmc Sierra 4wd ext cab z71, it has 160k miles, The a/c has slowly been loosing it coolling, so I charged it up, and it would escape within days, so clearly there … read more
ASEMaster35yrs
ASEMaster35yrs
Vocational, Technical or Trade Scho
1,314 satisfied customers
05 Yukon XL Denali AWD 6.0L. Started with NOT being able to
Yes started with NOT being able to fill Gas into tank normally EXCEPT VERY SLOWLY, and TIGHTEN GAS CAP messages, then CK ENGINE light and DTC= P0455. Odometer = 150,000 , so removed Vapor Canister and carbon pellets were falling out, so I replaced Vapor Canister, and replaced Vent Cntl Solenoid and EVAP Cntl Solenoid (after blowing pellets out of the line between the two), then cleared DTC. atempting to fill tank resulted in same VERY SLOW FILL process (aprox. 1 gal/min max) ????? … read more
Michael Solis
Michael Solis
243 satisfied customers
1997 suburban, GMC, deisel. The engine is orriginal, I keep
The engine is orriginal, I keep it well serviced. The problem that I need help with is that the environment control for the heater baffles is not working. I am an electronics technician and need the schematic for this environment control module so that I can troubleshoot it. … read more
roy
roy
Associate Degree
3 satisfied customers
2007 Silverado 4.8 cu. I have a P2138 code do you have a
2007 Silverado 4.8 cu. I have a P2138 code do you have a wiring diagram to show APP sensorcircuits for potential shorts to ground or high voltage drop while manipulating the harness between the APP se… read more
tim37857
tim37857
Mechanic
High School or GED
71 satisfied customers
1996 Chevy pickup brake lamps not working. Replaced brake
1996 Chevy pickup brake lamps not working. Replaced brake light switch 10 years ago. It does let me put me in drive and reverse. What do you think?… read more
Jaybird61
Jaybird61
Master Automotive Mechanic
1,882 satisfied customers
Looking for some information on a EG - 1 fuse that continues
Looking for some information on a EG - 1 fuse that continues to blow in my 99 Chevy 3500 van … read more
kalamykid
kalamykid
Pactor automotive
Vocational, Technical or Trade Scho
97 satisfied customers
I have a 2004 Chevy cavalier that I replaced with not one
I have a 2004 Chevy cavalier that I replaced with not one but two different remanufactured power steering pumps when I fill the pump up and start the car there is no circulation in the reservoir is sh… read more
Eric
Eric
Retired
N/A
14,436 satisfied customers
Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Show MoreShow Less

Ask Your Question

x