Chevy

Chevrolet Repair Questions? Ask a Chevy Mechanic for Answers ASAP

Ask an Expert,
Get an Answer ASAP!

Chevrolet 6.6 duramax 4x4: 2008 duramax going into limp mode…

Customer Question
2008 duramax going into limp...
2008 duramax going into limp mode I drive daily with work trailer without issue hot or cold but seems like every time I haul my 10,000 lb travel trailer it does this before it was a fuel sending unit got it all fixed haven't had trouble till today after I had it running for about 5 hours it went into limp mode I changed the fuel filter because it was on 0 even though yesterday it was 40% I took the battery cables off and then reconnected drive to a service man who said I had 2 codes one for the turbo and 1 reduced fuel pressure but that the fuel pressure was where it should be so he cleared the codes an hour down the road it went to limp mode again a quick stop to take battery cables off and reconnect got me back on the road but I'm afraid it will keep happening any ideas
Submitted: 3 years ago.Category: Chevy
Show More
Show Less
Ask Your Own Chevy Question
Answered in 30 minutes by:
6/21/2015
Chevy Mechanic: BOBBYSS, Master Technician replied 3 years ago
BOBBYSS
BOBBYSS, Master Technician
Category: Chevy
Satisfied Customers: 17,611
Experience: ASE MASTER CERTIFIED, AA DEGREE AUTO/DIESEL TECH
Verified
Hello, my name is Bobby. Thank you for the question. Most of the time this is caused by sudden and intermittent low fuel pressure. This is typically caused by the pressure relief valve in the fuel rail as shown in the picture. The valve actually stops sealing all of the time as it becomes warped. There are a lot of online suppliers that sell upgraded ones that will not do this. Please let me know if you need more help with this.
Ask Your Own Chevy Question
Customer reply replied 3 years ago
I don't see a picture
Was this answer helpful?

How JustAnswer works

step-image
Describe your issueThe assistant will guide you
step-image
Chat 1:1 with a chevy mechanicLicensed Experts are available 24/7
step-image
100% satisfaction guaranteeGet all the answers you need
Ask BOBBYSS Your Own Question
BOBBYSS
BOBBYSS
BOBBYSS, Master Technician
Category: Chevy
Satisfied Customers: 17,611
17,611 Satisfied Customers
Experience: ASE MASTER CERTIFIED, AA DEGREE AUTO/DIESEL TECH

BOBBYSS 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)

Chevy Technician

15,756 satisfied customers

GM Grand Master Technician 2007. 14 years experience.

Gary

Gary

Chevy Technician

9,642 satisfied customers

15 years GM master tech

Tim&#039;s Auto Repair

Tim's Auto Repair

mechanic

8,884 satisfied customers

Have owned a repair shop for 25 yrs.

Dave Nova

Dave Nova

Chevrolet Technician

7,092 satisfied customers

ASE Master Certification. GM World Class Certification

John

John

Master A.S.E Automotive technician

4,071 satisfied customers

A.S.E MasterTechnician A1-A8 w/L1,38 years experience General Motors Master Technician

Don - Mo Lurch

Don - Mo Lurch

Auto Mech / Electronics

2,953 satisfied customers

Chevrolet Cert., Heavy Line Mech, Race Shop Owner, Mobile Electronics.

Ron Z.

Ron Z.

- Chevy Tech -

2,836 satisfied customers

18+yrs experience. State Inspector and Chevy Diagnostics

< Previous | Next >

Related Chevy Questions
My 06 Duramax goes into limp mode when towing a trailer, I'm
My 06 Duramax goes into limp mode when towing a trailer … read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
Chevrolet silverado 1500: . This is a hauling question. I
Hi. This is a hauling question. I have a 2003 Chevy Silverado 1500 extended cab, 4x4, V8 4.8 Liter. I was mistaken about the weight of my old horse trailer and thought I was buying a horse trailer of … read more
Randall
Randall
Auto Technician / Consultant
Vocational, Technical or Trade Scho
69 satisfied customers
Chevrolet Silverado 2500 HD LT: I have a 2008 Chevy 2500
Hi I have a 2008 Chevy 2500 HD duramax truck and last summer I was pulling a trailer 600 miles from home and my change fuel filter light came on then 5 min latter it said reduced power and I had to pu… read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
I have a 06 duramax crew cab 4x4. In April while pulling 5
I have a 06 duramax crew cab 4x4. In April while pulling 5 th wheel camper my truck went in to limp mode made it to shop and it was low rail pressure code so had shop put new fuel filter on it worked … read more
Hal
Hal
owner/service tech
Vocational, Technical or Trade Scho
848 satisfied customers
ihave a 2012 silverado 5.3 z71 6 speed autopurchased new
ihave a 2012 silverado 5.3 z71 6 speed auto purchased new 19ft travel trailer when driving on highway with trailer tow on truck was shifting constantly tried manuel shift same thing travel trailer wei… read more
GM Bob
GM Bob
Automobile Technician
High School or GED
1,058 satisfied customers
Chevrolet Silverado 2500 HD: I have a 2004.5 Silverado 2500
I have a 2004.5 Silverado 2500 HD with a Duramax. Up until yesterday, it ran flawlessly. My family and I took a weekend camping trip, pulling our 6,000 lb. travel trailer from NJ into PA to visit Hers… read more
GM Tech (Cam)
GM Tech (Cam)
Chevy Technician
Vocational, Technical or Trade Scho
15,756 satisfied customers
2003 chevy: pulling..about 60 mph..od and locked torque converter..rpm
I have 2003 chevy hd1500 6.0 liter pulling 8000lbs travel trailer. I was running about 60 mph with good tail wind in tow haul mode and transmission was in od and locked torque converter about 2100 rpm… read more
GM Tech (Cam)
GM Tech (Cam)
Chevy Technician
Vocational, Technical or Trade Scho
15,756 satisfied customers
2008 silverado 1500: DURAMAX..PULLING..TRAILER..GET OFF ROAD IN TIME.
I HAVE A 2008 SILVARADO 2500 WITH DURAMAX ENGINE. TRUCK GOES INTO "LOW POWER" MODE USUALLY WHILE PULLING TRAILER BUT NO ALWAYS. HAVE HAD TO DEALER AND TWO FUEL FILTERS LATER SAME PROBLEM I AM AFRAID T… read more
GM Tech (Cam)
GM Tech (Cam)
Chevy Technician
Vocational, Technical or Trade Scho
15,756 satisfied customers
The hose off of driver side at turbo, truck went..oil pressure
2500 duramax just blew the hose off of driver side at turbo, truck went into limp mode after repairing, oil pressure is reading 40# XXXXX at 60 mph, what did i hurt… read more
Thomas
Thomas
Mechanic
High School or GED
1,053 satisfied customers
2007chevrolet diesel pulling ahorse trailer all..lost power..30 mph
driving 2007chevrolet diesel pulling ahorse trailer all of asudden lost power won)tgo faster than 30 mph temperture is in normal range… read more
Hal
Hal
owner/service tech
Vocational, Technical or Trade Scho
848 satisfied customers
Chevy: ls..the voltage goes from 14.6 to 12.7 and i took it
just got an 09 chevy silverado ls and the voltage goes from 14.6 to 12.7 and i took it to a mechanic they said it was normal on thoes truck… read more
Michael Moore
Michael Moore
Team leader, bumper to bumper tech.
Associate Degree
1,323 satisfied customers
2008 Chevrolet: 2500 HD with a 6.6 l duramax..truck has 60,000 miles.
I own a 2008 Chevrolet 2500 HD with a 6.6 L Duramax. The truck has 60,000 miles. The problem I will explain started at 47,00 miles. The truck has been in and out of sercice with no resolve. The proble… read more
KMP1171
KMP1171
Some College
185 satisfied customers
I tow a 4000 lb travel trailer in overdrive with a 1995 K 2500
can I tow a 4000 lb travel trailer in overdrive with a 1995 K 2500 with L480E transmission… read more
Dave Nova
Dave Nova
Chevrolet Technician
Associate Degree
7,092 satisfied customers
mountains: 5th wheel..Silverado ( 07 2500 hd duramax..steep hills
I travel in the mountains towing a 5th wheel. ... and I''m new to the Silverado (''07 2500HD Duramax) and I''d like to know how the tow/haul mode should be used going up the steep hills and down the o… read more
goodwrench9124
goodwrench9124
Lead Tech/ Shop Leader
Vocational, Technical or Trade Scho
2,571 satisfied customers
Our 2004 duramax..limp..gauge..airflow sensor replaced and the egr tom
Our 2004 duramax goes into the limp haul mode as soon as it gets a hair over the mid point on the transmission gauge 95 this is not suppoased to happen till 130 degrees We have had the airflow sensor … read more
Mcgruder73
Mcgruder73
Auto Technician
Associate Degree
I HAVE A 2006 CHEVY DURAMAX 3500 DIESEL AND IT GOES INTO ...
I HAVE A 2006 CHEVY DURAMAX 3500 DIESEL AND IT GOES INTO LIMP MODE WHEN I AM PULLING A LOADED TRAILER AND IT STARTED SMOKING BLACK SMOKE LIKE A SUN OF A GUN I HAVE HAD IT IN THE CHEVY SHOP AND THEY HA… read more
gmtech4
gmtech4
auto technician
N/A
44 satisfied customers
2001 Chevy: 6.0 liter..liter engine..towing..my mirage went down to
I have a 2001 Chevy 2500HD with a 6.0 liter engine. When towing a 4000lb boat my milage went down to 7.5mpg. I notice it has a hard time shifting down, and it seems the throttle gets stuck, and it is … read more
Ted G.
Ted G.
Technical/Sales Trainer
Vocational, Technical or Trade Scho
4,376 satisfied customers
2001 gmc: duramax..limp mode..my 14000lb trailer..going uphill
My 2001 gmc sierra duramax will sometimes go into limp mode but only when towing my 14000lb trailer, and usually when going uphill. When I unhitch, the problem goes away. 110000 miles. New injectors a… read more
RussMasterTech
RussMasterTech
GM Service Technician
3 Years College
546 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