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

88,975

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.

6,285

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

6,285

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

88,975

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 64,409 nationwide Sierra 1500 listings starting at $1,500.

ZIP:

Search GMC Sierra 1500 Questions

GMC Sierra 1500 Experts

#1 dragonflyoffshore
dragonflyoffshore
Reputation 4,850
#2 John Saffrahn
John Saffrahn
Reputation 3,440
#3 Glenn Clingenpeel
Glenn Clingenpeel
Reputation 3,020
View All

Related Models For Sale

Used Chevrolet Silverado 1500
1,952 Great Deals out of 159,903 listings starting at $1,995
Used Ford F-150
2,403 Great Deals out of 209,424 listings starting at $895
Used GMC Sierra 2500HD
134 Great Deals out of 13,898 listings starting at $2,650
Used Toyota Tundra
511 Great Deals out of 32,114 listings starting at $2,995
Used Dodge Ram 1500
427 Great Deals out of 11,401 listings starting at $700
Used Toyota Tacoma
531 Great Deals out of 37,484 listings starting at $2,950
Used GMC Yukon
392 Great Deals out of 16,276 listings starting at $1,800
Used Chevrolet Silverado 2500HD
328 Great Deals out of 26,371 listings starting at $2,500
Used Chevrolet Tahoe
600 Great Deals out of 27,562 listings starting at $600
Used Ford F-250 Super Duty
378 Great Deals out of 47,659 listings starting at $400
Used GMC Canyon
113 Great Deals out of 7,428 listings starting at $800
Used Chevrolet Camaro
132 Great Deals out of 35,283 listings starting at $1,995
Used GMC Sierra 2500
3 Great Deals out of 161 listings starting at $2,400
Used Chevrolet Colorado
220 Great Deals out of 22,251 listings starting at $2,000

Used Cars For Sale

2017 GMC Sierra 1500 For Sale
29 Great Deals out of 38,902 listings starting at $21,410
2016 GMC Sierra 1500 For Sale
79 Great Deals out of 3,792 listings starting at $17,995
2015 GMC Sierra 1500 For Sale
129 Great Deals out of 4,039 listings starting at $14,799
2014 GMC Sierra 1500 For Sale
133 Great Deals out of 4,351 listings starting at $14,495
2013 GMC Sierra 1500 For Sale
75 Great Deals out of 2,257 listings starting at $8,096