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

78,125

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 people found this helpful.
78,125

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?

78,125

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 58,777 nationwide Sierra 1500 listings starting at $1,995.

ZIP:

GMC Sierra 1500 Experts

  • #1
    dragonflyoffshore
    Reputation
    5,590
  • #2
    John Saffrahn
    Reputation
    3,870
  • #3
    Glenn Clingenpeel
    Reputation
    3,690
View All

Related Models For Sale

Used Chevrolet Silverado 1500
1,780 Great Deals out of 149,276 listings starting at $444
Used Ford F-150
2,313 Great Deals out of 214,968 listings starting at $1,300
Used GMC Sierra 2500HD
141 Great Deals out of 15,597 listings starting at $3,705
Used Toyota Tundra
471 Great Deals out of 38,650 listings starting at $1,999
Used Chevrolet Silverado 2500HD
375 Great Deals out of 29,590 listings starting at $2,000
Used Ram 1500
938 Great Deals out of 120,702 listings starting at $3,900
Used Dodge Ram 1500
306 Great Deals out of 9,513 listings starting at $1,750
Used Toyota Tacoma
408 Great Deals out of 44,656 listings starting at $1,995
Used Chevrolet Tahoe
542 Great Deals out of 36,630 listings starting at $1,299
Used GMC Yukon
340 Great Deals out of 20,152 listings starting at $1,400
Used Ford F-250 Super Duty
366 Great Deals out of 41,815 listings starting at $1,600
Used Chevrolet Colorado
270 Great Deals out of 41,238 listings starting at $1,900
Used Chevrolet Camaro
238 Great Deals out of 28,791 listings starting at $1,800
Used Chevrolet Corvette
99 Great Deals out of 15,304 listings starting at $3,900
Used GMC Canyon
99 Great Deals out of 14,963 listings starting at $2,495

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.