why is my truck hard to start.. hard to start when it does start it idle fine but when I give it gas it like it wants to or something then once it is warm it idle and drives fine code p0300 and p0420 have been read .. I need help please

100

Asked by Jun 18, 2014 at 09:25 AM about the 1996 GMC Sierra 1500 C1500 SL Standard Cab LB

Question type: Maintenance & Repair

3 Answers

100

I smell gas when trying to start all so

20

1st I would try & find & fix the gas smell problem. Gas vapors are very flammable. It may also be related as if fuel pressure drops due to a leak it can affect pressure & cause your problem when the engine is cold.

100

how do I find the gas smell problem??

1 of 1 people found this helpful.

Your Answer

Add photo

Related Questions

  • rough idle, stalling, loss of power. 228 answers

    o2 sensor code 44 (lean) Replaced: coolant temp sensor, tps, map sensor, fuel filter, and o2 sensor. It will run normal on occasion but only lasts about 45 seconds or so. I don't think its the torqu...

    1995 GMC Sierra 1500 K1500 SL 4WD Extended Cab Stepside SB

    -

    Maintenance & Repair

  • Rough idle in cold weather 9 answers

    In cold weather my 2000 sierra starts, reves up idles back down to rough idle and continues to do so for about a minute. Once it warms up runs great and does not do this in warm weather. Have had seve...

    2000 GMC Sierra 1500 SL Standard Cab SB

    -

    Maintenance & Repair

  • started stalling and dying when in gear 90 answers

    350 motor 4L60E trans Motor wants to stall while in gear (but doesn't do it out of gear once over 1000 rpm it dosent) seem to stall and it is only from a dead stop. Fuel filter has been replaced an...

    1994 GMC Sierra 1500 C1500 SLE Extended Cab SB

    -

    Maintenance & Repair

  • Rough Idle/No start 5 answers

    Okay guys, so my truck has been sitting since May of this year, and it broke down while I was driving about 200 miles from home. So obviously, it was running well and I didn't think there were any ...

    1996 GMC Sierra 1500 C1500 SL Standard Cab LB

    -

    Maintenance & Repair

  • Truck won't start 42 answers

    Recently I have experienced starting issues. One minute it starts and runs great, next time I try to start it it turns over but won't start. Let sit for awhile, turn key, won't start, turn key off...

    1988 GMC Sierra 1500 C1500 Standard Cab SB

    -

    Maintenance & Repair

Sierra 1500

Looking for a Used Sierra 1500 in your area?

CarGurus has 68,199 nationwide Sierra 1500 listings starting at $2,484.

ZIP:

Search GMC Sierra 1500 Questions

GMC Sierra 1500 Experts

#1 dragonflyoffshore
dragonflyoffshore
Reputation 5,010
#2 John Saffrahn
John Saffrahn
Reputation 3,540
#3 Glenn Clingenpeel
Glenn Clingenpeel
Reputation 3,150
View All

Related Models For Sale

Used Ford F-150
2,195 Great Deals out of 206,316 listings starting at $1,499
Used Dodge Ram 1500
453 Great Deals out of 11,152 listings starting at $700
Used Toyota Tacoma
542 Great Deals out of 40,814 listings starting at $2,495
Used GMC Yukon
377 Great Deals out of 18,226 listings starting at $2,950
Used Chevrolet Tahoe
549 Great Deals out of 29,234 listings starting at $1,699
Used Chevrolet Camaro
226 Great Deals out of 30,943 listings starting at $1,217

Used Cars For Sale

2017 GMC Sierra 1500 For Sale
43 Great Deals out of 44,111 listings starting at $20,121
2016 GMC Sierra 1500 For Sale
78 Great Deals out of 3,645 listings starting at $17,888
2015 GMC Sierra 1500 For Sale
102 Great Deals out of 3,926 listings starting at $15,400
2014 GMC Sierra 1500 For Sale
116 Great Deals out of 4,152 listings starting at $14,495
2013 GMC Sierra 1500 For Sale
66 Great Deals out of 2,009 listings starting at $9,600

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.