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

149,165

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

94,785

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.

94,785

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 5 nationwide Sierra Classic 1500 listings starting at $4,995.

Postal Code:

GMC Sierra Classic 1500 Experts

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

Related Models For Sale

Used GMC Sierra 1500
87 Great Deals out of 9,145 listings starting at $3,999
Used Chevrolet Silverado 1500
98 Great Deals out of 9,589 listings starting at $3,000
Used Ford F-150
163 Great Deals out of 11,156 listings starting at $1,900
Used GMC Yukon
11 Great Deals out of 1,274 listings starting at $4,995
Used Chevrolet Silverado 2500HD
11 Great Deals out of 1,495 listings starting at $3,000
Used Toyota Tacoma
36 Great Deals out of 1,630 listings starting at $5,450
Used Dodge Ram 1500
10 Great Deals out of 462 listings starting at $3,999
Used Chevrolet Tahoe
14 Great Deals out of 1,124 listings starting at $4,999
Used GMC Yukon XL
7 Great Deals out of 864 listings starting at $4,500

Used Cars for Sale

2007 GMC Sierra Classic 1500 For Sale
5 listings starting at $4,995

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