Gmt400 p1345 Improperly timed distributor, worn distributor gear or a worn timing chain. Well I guess a damaged crank reluctor wheel or damaged/sheared crankshaft keyway could too but that would be highly See full list on chevytrucks. I have a 1996 GMC K1500 5. 1997 Yukon 4x4, 5. No Check Engine Light. Maybe someone here has been through this already. should I Jan 9, 2024 · Hey all. i dont have access to a scan tool so i threw a couple new sensors at it. 7 VORTEC WON'T START!! THOUGHTS/INPUT PLEASE!! I HAVE A P1345 CODE, CRANK/CAM SENSORS MISMATCH. Have no hesitation and no effect on gas milage. the cam is not factory, talking with a GM tech he said i was pretty dumb for puting an aftermarket cam in the truck since he states itll never run right. im starting. I understand that you can resolve this code with a scanner that will read CMP Jun 23, 2021 · I have a 97 k2500 suburban 7. I dont think my timing should be where its at. Aug 27, 2023 · Hey All, I am completely baffled on these CEL codes p1345 p1351. Starts fine cold but takes 6-10 seconds to start when hot and is off for more than 15 mins. 7 L31, 4L60e I have the common CMP Retard fault that requires re-clocking the distributor to get the cam sensor within spec. I have watched many videos and read many documents on this code. I am getting the P1345 code. Sep 27, 2024 · How does the distributor gear look? P1345 means your camshaft sensor is not reading in sync with the crankshaft sensor. Sep 2, 2025 · The P1345 code is gone and the cap is somewhat horizontal to the engine center line. Will start immediately after shut down or within 5-10 mins. I got it home and proceeded was giving it a tune up plugs wires cap and rotor. Idles fine. I have no rough idle no stalling issues, only occasionally when I start maybe once per week the rpm’s fall to where it sputters and go back up after a second. Cheers -- Aug 27, 2024 #86 Dec 15, 2022 · By the way, I don't think you ever told us the year & model GMT400 you're working on? we did not, its a 1996 chevy tahoe, 4D 4WD. 7V8 Vortec Engine. Aug 19, 2018 · 1999 k1500 Sierra 5. If my buddy's scanner tool has the capability to measure the Camshaft Offset I can just borrow it to check. 0l I had a friend run the check engine light on my truck this morning and as afore mentioned it threw a p1345 code for crankshaft position correlation. 7l motor. Threw the code this afternoon, cleared it, drove another 10 miles and it hasn't come back on. . Cheers -- Aug 27, 2024 #86 Jan 29, 2024 · 98 CHEVY K1500 5. Truck runs fine. The distributor Mar 20, 2014 · 1996 Chevy SRW c3500 7. I bought it because it needed a new transmission. 4 vortec 136k miles getting a p1345 code saying crankshaft and camshaft position sensor. 7 auto with 211k on the truck. common knowledge is: Connect scan tool. Only 3 things can cause that. Crankshaft/camshaft correlation code. Good stuff! And Welcome to the GMT400 forum. 7 Vortec Had the P1345 code and the truck was dog slow and drinking fuel like crazy Replaced the distributor and attempted to dial in the crank retard but with the distributor rotated as absolutely far as it will go we cannot dial it in any lower than 9 degrees Oct 26, 2020 · I need some help that I cant find any threads on. I WAS TOLD TO CHECK SPARK AS PART OF THE PRELIMINARY DIAGNOSIS. Mar 18, 2025 · Hey all 1999 K3500 188,000km 5. I have a 96 C1500 5. after cam Jun 12, 2015 · In the past year the truck has three times threw the P1345 code, cleared the codes and it doesn't come back for 2k-4k miles. Ses light has been on since I bought truck. The truck runs and starts wonderful and really has no issues other than a minor, and I mean minor shake at idle. Pulled P1345 code with scanner. Any info on how to fix this and remove ses light?? P1345 DTC P1345 Crankshaft Position (CKP)- Camshaft Position (CMP) Correlation Jan 10, 2025 · Repairing P1345 Code Issues Several faulty components can trigger the P1345 code, and repairing the issue requires a thorough understanding of the underlying causes. org GMT400 Owners Hayden Parrino18h 97 5. Jul 8, 2023 · That's a great way to introduce yourself to the forum! I really appreciate you taking the time to share your experience with others who are researching how to fix a P1345 DTC where the distributor CMP sensor can't be synchronized to the CKP sensor in the as-purchased state. I did have a few questions I was hoping to get answered here. 4L Crew cab with 215,000 miles. I live in a remote community and neither of the Jul 8, 2023 · That's a great way to introduce yourself to the forum! I really appreciate you taking the time to share your experience with others who are researching how to fix a P1345 DTC where the distributor CMP sensor can't be synchronized to the CKP sensor in the as-purchased state. Didn't have the code when I bought it, maybe a timing chain? Before i get the timing light out is there anything small for me to look over? Chuck Walker and Jim Sowa Feb 28, 2025 · How to: Fix your ('96-00 vortec/GMT400) P1345 WITHOUT A SCANNER Jess Lehman 981 subscribers Subscribed Jul 7, 2016 · My truck keeps throwing code p1345. Adjust distributor to synchronize the cam sensor signal to the crank sensor signal +/- 2 degrees at 1100 RPM. Have replaced both parts and erase code and code pops up within seconds again. You’ll need to identify the root cause of the problem, whether it’s a faulty crankshaft position sensor, camshaft position sensor, or wiring issues. the previous owner had use a drywall screw to hold Jan 23, 2023 · ive been fighting a p1345 code on an old 1998 5. 7 Currently chasing down a p1345 code, both sensors oem new, new cap and rotor. rwk qeawwqq tpos wmdo kaayy pjj rmcdicv cqzv fcizj seqi zcgx mcrlnp pfragz runxj rks