Truck fuel problem

Asked by Jun 16, 2017 at 11:53 PM about the 1999 GMC Sierra Classic 1500

Question type: Maintenance & Repair

Could it be fuel pressure regulator

3 Answers

182,305

I suppose it could be but what is the problem? Did you replace the fuel filter?

111,575

What you do is check the fuel pressure at the Schrader Valve with a fuel pressure gauge. The fuel pressure should be 56 to 63 lbs. Turn the key to the on position to build up fuel pressure. Then let it sit for just over 3 minutes. Fuel pressure should not drop more than 5 lbs. in 3 minutes. If it does, then it is a indication of the spider injection assembly leaking and would need replacing. Otherwise a bad fuel pump. Change out the fuel filter first tho.

111,575

So I see further down you had cut the catalytic converters off. Are the O2 sensors still installed? Not having the cats on creates a problem with the air fuel mixture, you probably have a check engine light on. This vehicle needs the catalytic converters on to run properly.

Your Answer:

Sierra Classic 1500

Looking for a Used Sierra Classic 1500 in your area?

CarGurus has 3 nationwide Sierra Classic 1500 listings starting at $11,500.

Postal Code:

GMC Sierra Classic 1500 Experts

  • #1
    JRKMotorZ
    Reputation
    60
  • #2
    David Tinnin
    Reputation
    20
  • #3
    John Edward
    Reputation
    10
View All

Related Models For Sale

Used GMC Sierra 1500
61 Great Deals out of 9,455 listings starting at $4,595
Used Chevrolet Silverado 1500
63 Great Deals out of 10,312 listings starting at $4,750
Used Ford F-150
141 Great Deals out of 10,248 listings starting at $2,000
Used Toyota Tundra
19 Great Deals out of 1,628 listings starting at $2,318
Used Chevrolet Silverado 2500HD
12 Great Deals out of 1,645 listings starting at $5,950
Used GMC Yukon
15 Great Deals out of 1,354 listings starting at $3,995
Used Chevrolet Tahoe
11 Great Deals out of 1,307 listings starting at $3,690
Used Dodge Ram 1500
11 Great Deals out of 397 listings starting at $4,900
Used Chevrolet Camaro
8 Great Deals out of 1,046 listings starting at $10,995
Used Toyota Tacoma
24 Great Deals out of 1,814 listings starting at $5,999

Used Cars for Sale

2007 GMC Sierra Classic 1500 For Sale
3 listings starting at $11,500

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. Content will be removed if CarGurus becomes aware that it violates our policies.