2008 z71 flashing cell

Asked by Jan 29, 2016 at 10:32 PM about the 2008 GMC Sierra 1500 SLT Crew Cab 4WD

Question type: Maintenance & Repair

OK about a month ago my cel was flashing and my truck
ran rough toomey it to the dealer he said I had a misfire on
#7 and#1 cylinders did a tune up and also changed.the
valve cover on the driver side it was recommended  by the
dealership so I did (I did all the work myself )  Now my truck
is doing the same thing so I pulled the plugs to see if any
were fouled out and nope all looked good haven't got the
computer read for the codes yet seeing I work nights I am
gonna have it done over the weekend dies any one have
any suggestions on what to do?

6 Answers

97,105

It could be weak coils, or the spark cables, when was the last real good injector cleaning? A code check should help, possibly it is something different.

OK cool is there a way to check the coil other than moving them around and using the process of elimination. It's been about 50000 miles since I did the last injector cleaning

97,105

Yes you can switch coils around to see if the codes reflect the change, if they do then you have bad coils and or cables. If not then you have to go deeper possible injector problems. I would dump a bottle of Techron in the tank, and run it a few days then clear the codes and see if they return.

OK thanks man I'm sure it would b ok to run the engine like it is right?

97,105

Yeah but make sure it isn't running those cylinders too lean, that could cause other problems later on.

OK sounds good thanks for the help

Your Answer

Add photo

Related Questions

  • 2008 z71 flashing cell 6 answers

    OK about a month ago my cel was flashing and my truck ran rough toomey it to the dealer he said I had a misfire on #7 and#1 cylinders did a tune up and also changed.the valve cover on the driver si...

    2008 GMC Sierra 1500 SLT Crew Cab 4WD

    -

    Maintenance & Repair

  • brake light flashing 1 answer

    On my 91 k1500 the brake light started flashing. Six short and one long. Not abs not equipped. Any thing else come to mind.

    1991 GMC Sierra 1500 K1500 SLE 4WD Standard Cab SB

    -

    Maintenance & Repair

  • have 95 z71 can I put transmission from 99 in? 1 answer

    Transmission swap what other years are compatible with my 95 z71 4+4 5.7L

    1995 GMC Sierra 1500

    -

    Maintenance & Repair

  • 2008 GMC.Seirra WT edition. 1 answer

    My lights dim on my 2008 gmc. Sierra WT when the a.c. clutch kicks on I replaced the alternator .think they dim without it to like at a stop light is it a ground or battery problem

    2008 GMC Sierra 1500 Work Truck Ext. Cab LB

    -

    Maintenance & Repair

  • Camshaft position sensor location on 2008 gmc sierra 1500? 1 answer

    Does anyone know where I can find the camshaft sensor for a 2008 gmc sierra 1500?

    2008 GMC Sierra 1500 SLE1 Ext. Cab 4WD

    -

    Maintenance & Repair

Sierra 1500

Looking for a Used Sierra 1500 in your area?

CarGurus has 68,001 nationwide Sierra 1500 listings starting at $1,700.

ZIP:

Search GMC Sierra 1500 Questions

GMC Sierra 1500 Experts

#1 dragonflyoffshore
dragonflyoffshore
Reputation 5,270
#2 John Saffrahn
John Saffrahn
Reputation 3,640
#3 Glenn Clingenpeel
Glenn Clingenpeel
Reputation 3,330
View All

Related Models For Sale

Used Chevrolet Silverado 1500
1,935 Great Deals out of 182,327 listings starting at $999
Used Ford F-150
2,088 Great Deals out of 192,330 listings starting at $290
Used GMC Sierra 2500HD
129 Great Deals out of 12,674 listings starting at $2,995
Used Toyota Tundra
415 Great Deals out of 34,266 listings starting at $1,950
Used Dodge Ram 1500
399 Great Deals out of 10,886 listings starting at $1,000
Used Toyota Tacoma
548 Great Deals out of 42,266 listings starting at $1,995
Used GMC Yukon
417 Great Deals out of 20,457 listings starting at $1,495
Used Chevrolet Silverado 2500HD
326 Great Deals out of 28,527 listings starting at $990
Used Chevrolet Tahoe
588 Great Deals out of 33,016 listings starting at $1,500
Used Ford F-250 Super Duty
330 Great Deals out of 43,931 listings starting at $1,450
Used GMC Canyon
101 Great Deals out of 11,880 listings starting at $3,500
Used Chevrolet Colorado
250 Great Deals out of 27,517 listings starting at $1,000
Used Nissan Titan
175 Great Deals out of 18,876 listings starting at $3,995

Used Cars For Sale

2017 GMC Sierra 1500 SLT Crew Cab 4WD For Sale
32 Great Deals out of 12,376 listings starting at $38,486
2016 GMC Sierra 1500 SLT Crew Cab 4WD For Sale
33 Great Deals out of 1,040 listings starting at $33,995
2015 GMC Sierra 1500 SLT Crew Cab 4WD For Sale
35 Great Deals out of 1,346 listings starting at $23,750
2014 GMC Sierra 1500 SLT Crew Cab 4WD For Sale
27 Great Deals out of 1,306 listings starting at $20,900
2013 GMC Sierra 1500 SLT Crew Cab 4WD For Sale
4 Great Deals out of 220 listings starting at $17,977

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.