99 gmc sierra z71

Asked by Jan 08, 2017 at 06:41 PM about the 1999 GMC Sierra 1500

Question type: Maintenance & Repair

My 99 gmc has a 5.3 it wont rev over 3000 rpms. It
did idle ruff but idles fine now after i have replaced
intake gaskets, fuel pressure regulator, tpi sensor,
egr tube, complete tune up plus changed coil
packs. It has a check engine light on and the cpu
wont scan or reset and the fuses are good cigar
lighters all work! Grounds are all good, plus i just
cleaned the maf sensor and idle sensor

3 Answers

71,365

Are there any codes?

71,365

I am suspecting the Throttle Positioning Sensor and wire harness plugin.

71,365

You would have a p1515 to 1519 code come up, I suspect it would be p1516

Your Answer

Add photo

Related Questions

  • 99 gmc sierra z71 3 answers

    My 99 gmc has a 5.3 it wont rev over 3000 rpms. It did idle ruff but idles fine now after i have replaced intake gaskets, fuel pressure regulator, tpi sensor, egr tube, complete tune up plus change...

    1999 GMC Sierra 1500

    -

    Maintenance & Repair

  • 99 gmc sierra 4 answers

    So my husband has a 99 gmc Sierra that he has had for about 1 year now. When we bought the truck it already had hids installed as head lights and of course we have had nothing but electrical/light...

    1999 GMC Sierra 1500

    -

    Maintenance & Repair

  • 2010 GMC Sierra crew cab 4x4 Z71 - low oil pressure 3 answers

    Is it normal for this sierra to run 39% oil pressure on the highway on cruise control and at times 20% percent on idle in the city? Doesn't that seem too low? I took it to the dealership and they sa...

    2010 GMC Sierra 1500 SLE Crew Cab 4WD

    -

    Maintenance & Repair

  • Will a 2003 gmc sierra 1500 5.3 4x4 transmission work in my 99

    Will a 2003 gmc sierra 1500 5.3 4x4 transmission work with my 99 gmc sierra 1500 5.3 4x4

    1999 GMC Sierra 1500 SLT 4WD Extended Cab SB

    -

    Maintenance & Repair

  • 93 gmc k1500 Sierra Z71 1 answer

    I have no spark to the spark plugs it kranks over but no start I've replaced the coil pack still no start what should I do next

    1993 GMC Sierra 1500 C1500 SLE Standard Cab Stepside SB

    -

    Maintenance & Repair

Sierra 1500

Looking for a Used Sierra 1500 in your area?

CarGurus has 7,843 nationwide Sierra 1500 listings starting at $3,333.

Postal Code:

Search GMC Sierra 1500 Questions

GMC Sierra 1500 Experts

#1 dragonflyoffshore
dragonflyoffshore
Reputation 5,100
#2 John Saffrahn
John Saffrahn
Reputation 3,560
#3 Glenn Clingenpeel
Glenn Clingenpeel
Reputation 3,230
View All

Related Models For Sale

Used Chevrolet Silverado 1500
118 Great Deals out of 6,684 listings starting at $2,339
Used Ford F-150
304 Great Deals out of 8,874 listings starting at $1,600
Used Toyota Tundra
10 Great Deals out of 714 listings starting at $4,999
Used Dodge Ram 1500
68 Great Deals out of 545 listings starting at $2,985
Used Toyota Tacoma
15 Great Deals out of 826 listings starting at $10,500
Used GMC Yukon
13 Great Deals out of 645 listings starting at $4,500
Used Chevrolet Tahoe
494 listings starting at $4,995
Used Ford F-250 Super Duty
16 Great Deals out of 712 listings starting at $4,500
Used Chevrolet Camaro
848 listings starting at $8,995

Used Cars For Sale

2017 GMC Sierra 1500 For Sale
5,883 listings starting at $26,170
2016 GMC Sierra 1500 For Sale
16 Great Deals out of 188 listings starting at $21,988
2015 GMC Sierra 1500 For Sale
33 Great Deals out of 482 listings starting at $20,000
2014 GMC Sierra 1500 For Sale
23 Great Deals out of 407 listings starting at $18,900
2013 GMC Sierra 1500 For Sale
20 Great Deals out of 251 listings starting at $15,800

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.