truck runs ruff when first started then clears after a few minutes has code p1345

10

Asked by Jan 27, 2016 at 11:24 PM about the GMC Sierra 1500

Question type: Maintenance & Repair

1996 gmc 454 k3500

5 Answers

75,575

This is crankshaft to camshaft correlation faulty. In other words your camshaft and crankshaft are not in the proper positions in relation to each other. Sounds like a timing chain problem. Are you experiencing loss of power and the engine running hot or boiling over when you shut it off? If so, it's definitely a timing chain problem. This is especially suspect if you have a lot of miles on your truck. One other possibility is a worn out harmonic balancer. A harmonic balancer that has a lot of play in it will make the computer "think" the crankshaft is in the wrong position in relation to the camshaft. HTH. -Jim

10

i got 65,000 original miles, starts easy, runs rough. when I give some throttle it eventually clears up then runs fine until i shut it off. happens only when first starting it

1 of 1 people found this helpful.
75,575

That trouble code is suggesting that something is going on with the timing chain. HTH. - Jim

10

could it b crankshaft sensor or camshaft sensor?

75,575

I doubt it. You'd be getting a different trouble code if it were. HTH. -Jim

Your Answer

Sierra 1500

Looking for a Used Sierra 1500 in your area?

CarGurus has 61,543 nationwide Sierra 1500 listings starting at $1,295.

ZIP:

GMC Sierra 1500 Experts

  • #1
    dragonflyoffshore
    Reputation
    5,520
  • #2
    John Saffrahn
    Reputation
    3,820
  • #3
    Glenn Clingenpeel
    Reputation
    3,570
View All

Related Models For Sale

Used Chevrolet Silverado 1500
2,725 Great Deals out of 156,636 listings starting at $1,000
Used Ford F-150
3,016 Great Deals out of 229,513 listings starting at $1,300
Used GMC Sierra 2500HD
117 Great Deals out of 14,792 listings starting at $3,259
Used Chevrolet Silverado 2500HD
446 Great Deals out of 31,316 listings starting at $2,500
Used Toyota Tundra
625 Great Deals out of 36,104 listings starting at $1,500
Used Ram 1500
1,246 Great Deals out of 118,407 listings starting at $3,950
Used Toyota Tacoma
540 Great Deals out of 41,033 listings starting at $2,500
Used Dodge Ram 1500
324 Great Deals out of 10,665 listings starting at $1,988
Used Ford F-250 Super Duty
443 Great Deals out of 47,411 listings starting at $695
Used Chevrolet Tahoe
818 Great Deals out of 39,847 listings starting at $1,900
Used GMC Yukon
496 Great Deals out of 19,332 listings starting at $1,995
Used Chevrolet Camaro
385 Great Deals out of 31,356 listings starting at $3,495
Used Chevrolet Colorado
318 Great Deals out of 42,463 listings starting at $1,299
Used Ford Mustang
337 Great Deals out of 42,079 listings starting at $1,488
Used Jeep Grand Cherokee
890 Great Deals out of 71,119 listings starting at $900

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.