Is it timing or something else

Asked by Aug 05, 2016 at 12:34 AM about the 2003 GMC Sierra 1500 Work Truck Standard Cab LB

Question type: Maintenance & Repair

Hi i change my oil and filter, my fuel pump and fuel filter, i also change my rotor distributor cab
wires and spark plugs  on a gmc sierra v6 4.3l yr 2003. Now my truck shakes a lil and when i
step on the gas pedal it feels like shocking. Plus when connecting timing gun i dont get flash
from it. Can any body help me out

8 Answers

92,905

Recheck your work, its really easy to fracture a spark plug and not know it, or possibly one of them is bad. A scope check would most likely find what one is laying down under power if you wanted to take it to a shop and have it done.

6,525

Check ur spark plug wires to make sure u have the right firing order

I did already i even put the old spark plugs and wire to see if that was the problem i double check the gap and they are fine and on the firing order i have the speks of it. I dont know what wlse to do

6,525

If the timing is right, sparkplugs and wiring then chec to see if U might've accidentally disconnected a sensor plug or vacuum hose

I did check all that and i have spark on cilynder 1 i made my timing gun work allready but now everytime i step into gas pedal check engine light flashes but truck doest shake no more. All this is on a park mode i havent switch gear on it

92,905

OK now you have a code stored in the system, hopefully this is your problem, so get the code pulled. Do you have a code reader?

I did check all that and i have spark on cilynder 1 i made my timing gun work allready but now everytime i step into gas pedal check engine light flashes but truck doest shake no more. All this is on a park mode i havent switch gear on it

I think i found the issue my cousing tied the distributor cab to hard and the screw from the inside was loose. Thanx cousin for adding more bills lol

Your Answer

Add photo

Related Questions

Sierra 1500

Looking for a Used Sierra 1500 in your area?

CarGurus has 68,200 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 Chevrolet Silverado 1500
1,718 Great Deals out of 175,749 listings starting at $1,250
Used Ford F-150
2,191 Great Deals out of 206,316 listings starting at $1,499
Used GMC Sierra 2500HD
112 Great Deals out of 14,005 listings starting at $2,650
Used Toyota Tundra
440 Great Deals out of 34,312 listings starting at $2,700
Used Dodge Ram 1500
454 Great Deals out of 11,152 listings starting at $700
Used Toyota Tacoma
541 Great Deals out of 40,814 listings starting at $2,495
Used GMC Yukon
374 Great Deals out of 18,226 listings starting at $2,950
Used Chevrolet Silverado 2500HD
307 Great Deals out of 27,740 listings starting at $1,250
Used Chevrolet Tahoe
548 Great Deals out of 29,234 listings starting at $1,699
Used Ford F-250 Super Duty
343 Great Deals out of 46,938 listings starting at $1,895
Used GMC Canyon
92 Great Deals out of 9,387 listings starting at $2,495
Used Chevrolet Camaro
226 Great Deals out of 30,943 listings starting at $1,217
Used Chevrolet Colorado
216 Great Deals out of 24,314 listings starting at $2,495
Used GMC Sierra 1500HD
7 Great Deals out of 115 listings starting at $2,995

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
117 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.