2500 Silverado hard starting when cold

Asked by May 23, 2017 at 03:25 PM about the 2001 Chevrolet Silverado 2500HD Base 4WD

Question type: Maintenance & Repair

When it is cold it doesn't like to start.  When it does it runs fine.  Fuel pressure
is 50 psi and holds there for at least 10 minutes.  it drops about 10  psi when
running.  Scanner says "fuel volume regulator control circuit open".  I have no
idea what it means.  I've replaced fuel pressure regulator, no change.  I think
it may be electrical?

5 Answers

2,095

The fuel volume regulator code may have several causes: Disconnected plug to the fuel regulator Possible corrosion in the sensor connector Damage to the sensor wiring to the ECM Leaking fuel pressure regulator Damaged fuel pump The ECM is damaged

2,095

What are your driving symptoms? likely affect would be: 1.The engine’s performance during driving 2. Possible stalling 3. It may cause the exhaust to show smoke in various colors from black to white 4. Fuel economy will not be efficient

2,095

Just replacing the fuel pressure regulator never guarantees a successful repair in resolving your issue. It may be caused by several components as listed above and more. Performing a visual inspection and testing the car with a scan tool, and other special equipment listed above, will verify your issue before spending money and time replacing the fuel pressure regulator unnecessarily. Electrical signals require evaluation by a scan tool and voltage meter to ensure that the fuel pressure regulator requires replacement or if another problem exists. Additional testing may be required.

2,095

Lastly, any sensor issue may occur all the time or intermittently. Some fault codes may require more time to diagnose. With this particular code, the solution could be simple or require extensive time to diagnose and repair. Depending on your vehicle, it may take several hours to determine the root cause and repair. I have experienced this code in the past mostly on Ford vehicles. After using a scan tool and monitoring the voltage, I could determine if the fuel pressure regulator, wiring, ECM, or fuel pump is at fault. With the scan tool connected I typically evaluate the data while checking the fuel pressure and using a voltage meter to ensure all the values match. If the values do not match, then a further diagnosis is required. The sensor may be the cause, wiring issues might be burning/rubbing on another engine component from previous repairs, rodents like to chew wires, or you may have a bad ECM. A scan tool inspection is required. Then we will determine where the fault lies. We could clear the fault code/light first, then verify if the Check Engine Light returns, and go from there. It may have been a weird occurrence from bad gas or weather, or a permanent problem. Vehicles with high mileage (over 80,000 miles) may just need a regulator. But replacing parts based upon a code is not recommended

1 of 1 people found this helpful.
2,095

Bottom line ...items to check 1.Disconnected plug to the fuel regulator 2.Possible corrosion in the sensor connector 3.Damage to the sensor wiring to the ECM 4.Leaking fuel pressure regulator 5.Damaged fuel pump The ECM is damaged

Your Answer

Silverado 2500HD

Looking for a Used Silverado 2500HD in your area?

CarGurus has 1,149 nationwide Silverado 2500HD listings starting at $4,995.

Postal Code:

Chevrolet Silverado 2500HD Experts

  • #1
    Steven Loeffler
    Reputation
    500
  • #2
    Tom Demyan
    Reputation
    310
  • #3
    piocon
    Reputation
    290
View All

Related Models For Sale

Used GMC Sierra 2500HD
21 Great Deals out of 1,217 listings starting at $3,995
Used Ford F-250 Super Duty
29 Great Deals out of 793 listings starting at $2,475
Used Chevrolet Silverado 1500
173 Great Deals out of 9,719 listings starting at $1,995
Used Dodge Ram 2500
5 Great Deals out of 90 listings starting at $1,995
Used GMC Sierra 1500
239 Great Deals out of 9,964 listings starting at $399
Used Ford F-350 Super Duty
32 Great Deals out of 1,087 listings starting at $6,995
Used Ford F-150
594 Great Deals out of 10,717 listings starting at $3,300
Used Chevrolet Silverado 2500
3 Great Deals out of 5 listings starting at $6,885
Used Chevrolet Silverado 1500HD
3 listings starting at $6,054
Used Dodge Ram 3500
5 Great Deals out of 74 listings starting at $8,800

Used Cars For Sale

2017 Chevrolet Silverado 2500HD For Sale
55 listings starting at $39,335
2016 Chevrolet Silverado 2500HD For Sale
3 Great Deals out of 57 listings starting at $35,900
2015 Chevrolet Silverado 2500HD For Sale
61 listings starting at $23,980
2014 Chevrolet Silverado 2500HD For Sale
14 listings starting at $28,995
2013 Chevrolet Silverado 2500HD For Sale
16 listings starting at $22,995

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.