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

60,775

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 out of 1 people think this is helpful.
60,775

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?

60,775

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

Your Answer

Add photo

Related Questions

Sierra 1500

Looking for a Used Sierra 1500 in your area?

CarGurus has 62,271 nationwide Sierra 1500 listings starting at $1,395.

ZIP:

Search GMC Sierra 1500 Questions

GMC Sierra 1500 Experts

#1 dragonflyoffshore
dragonflyoffshore
Reputation 4,740
#2 John Saffrahn
John Saffrahn
Reputation 3,350
#3 Glenn Clingenpeel
Glenn Clingenpeel
Reputation 2,960
View All

Related Models For Sale

Used Chevrolet Silverado 1500
2,308 Great Deals out of 156,238 listings starting at $1,395
Used Ford F-150
2,885 Great Deals out of 212,656 listings starting at $1,000
Used GMC Sierra 2500HD
154 Great Deals out of 13,588 listings starting at $3,450
Used Dodge Ram 1500
538 Great Deals out of 12,998 listings starting at $2,199
Used Toyota Tundra
624 Great Deals out of 30,698 listings starting at $2,637
Used Ram 1500
1,244 Great Deals out of 115,985 listings starting at $6,995
Used Toyota Tacoma
627 Great Deals out of 35,082 listings starting at $2,155
Used Chevrolet Silverado 2500HD
360 Great Deals out of 26,069 listings starting at $2,500
Used GMC Yukon
552 Great Deals out of 17,369 listings starting at $1,995
Used Chevrolet Tahoe
807 Great Deals out of 28,675 listings starting at $1,500
Used Ford F-250 Super Duty
424 Great Deals out of 45,049 listings starting at $2,000
Used Chevrolet Camaro
309 Great Deals out of 38,867 listings starting at $1,250
Used Chevrolet Colorado
278 Great Deals out of 19,365 listings starting at $1,995
Used GMC Canyon
106 Great Deals out of 7,947 listings starting at $2,800
Used GMC Sierra 1500HD
7 Great Deals out of 113 listings starting at $3,900