Chevy / GMC Truck: Crank No Start No Communication With FPCM
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Date: 2020-08-05
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Comments and reviews: 10
Robert
I'm working on a 2011 silverado with a 4. 8 vortec eng- it came to me with a loud tapping/ knocking noise heard these engines had problems with the VVT units on the front of the cam I cked it & was making a little noise, so the owner opted to go with a VVT delegate kit due to it being a lot cheaper& don't have to work about it going bad again, the kit included a new timing cover & CMP sensor, it didn't fix the problem, icam to the conclusion that that one of the roller lifters had gone bad, so pulled the head on the driver's side & sure enough a lifters had come apart, the owner (a freind) didn't have much money so he wanted to just replace the one bad lifter, the remaining lifters & camshaft looked fine. So, I replaced the bad lifter & flushed the engine clean as best as I could & put it all back together ( oh & I also put a new oil pump on too) So I primed the oil pump before I started it. The engine fired up instantly & ran beautifully I let it run for about a half hour making sure everything was good, oil pres, water temp etc. the owner said it sounded better then when he first got it, So went on a test drive & she ran fantastic for about 3 miles & then it died & won't start now. I checked & it's getting spark, I sprayed starter fluid in the throttle body & nothing, it's set a couple codes: P0010, P0340 & P0445. I know it's going to set a code because after the VVT delete kit I need to take it & get the PCM flashed so it won't trigger a the MIL I don't know what code should or shouldn't be set, & was running great, I'm thinking maybe the new CMP sensor might have failed. I could use your help with any sugestions or input you might have. -
P. S. I only have a not too expensive scan tool that can pull some live data, but not everything.
Thanks Robert
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I'm working on a 2011 silverado with a 4. 8 vortec eng- it came to me with a loud tapping/ knocking noise heard these engines had problems with the VVT units on the front of the cam I cked it & was making a little noise, so the owner opted to go with a VVT delegate kit due to it being a lot cheaper& don't have to work about it going bad again, the kit included a new timing cover & CMP sensor, it didn't fix the problem, icam to the conclusion that that one of the roller lifters had gone bad, so pulled the head on the driver's side & sure enough a lifters had come apart, the owner (a freind) didn't have much money so he wanted to just replace the one bad lifter, the remaining lifters & camshaft looked fine. So, I replaced the bad lifter & flushed the engine clean as best as I could & put it all back together ( oh & I also put a new oil pump on too) So I primed the oil pump before I started it. The engine fired up instantly & ran beautifully I let it run for about a half hour making sure everything was good, oil pres, water temp etc. the owner said it sounded better then when he first got it, So went on a test drive & she ran fantastic for about 3 miles & then it died & won't start now. I checked & it's getting spark, I sprayed starter fluid in the throttle body & nothing, it's set a couple codes: P0010, P0340 & P0445. I know it's going to set a code because after the VVT delete kit I need to take it & get the PCM flashed so it won't trigger a the MIL I don't know what code should or shouldn't be set, & was running great, I'm thinking maybe the new CMP sensor might have failed. I could use your help with any sugestions or input you might have. -
P. S. I only have a not too expensive scan tool that can pull some live data, but not everything.
Thanks Robert
reply
Tony
Given that I fix stuff in climate controlled data centers, some don't even allow cardboard inside to keep the dust and dirt down, it's hard to complain about electronic failures in an automotive environment.
If this stuff fails in the sorts of places I work, it's not shocking when these things fail in cars.
No matter how you build it, some are going to fail.
Now needing to program the ECM for a replacement seems odd. Even Dorman is claiming they have a replacement that doesn't require programming. If they can make one of those work for 10 minutes, you'd think the engineers at GM could have figured out how to create an FPCM that didn't require manipulation of the ECM to work out of the box.
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Given that I fix stuff in climate controlled data centers, some don't even allow cardboard inside to keep the dust and dirt down, it's hard to complain about electronic failures in an automotive environment.
If this stuff fails in the sorts of places I work, it's not shocking when these things fail in cars.
No matter how you build it, some are going to fail.
Now needing to program the ECM for a replacement seems odd. Even Dorman is claiming they have a replacement that doesn't require programming. If they can make one of those work for 10 minutes, you'd think the engineers at GM could have figured out how to create an FPCM that didn't require manipulation of the ECM to work out of the box.
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mindtouchone
When I retired I has 2 ASE Master certificates and every certifications Ford offered, and more and I'm saying this man is GOOD, or as a friend says good at it! Anybody in his area needs to take their problems to him. As to prices, people need to understand that it takes a lot to operate a business like his. The money for tools alone is high and a good scanner alone can cost 10k, or more plus there' are more and more tools needed including special tools that may be needed to work on a certain brand of vehicle. On top of that the overhead in NY is astronomical. A good tech like this man is worth top dollar.
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When I retired I has 2 ASE Master certificates and every certifications Ford offered, and more and I'm saying this man is GOOD, or as a friend says good at it! Anybody in his area needs to take their problems to him. As to prices, people need to understand that it takes a lot to operate a business like his. The money for tools alone is high and a good scanner alone can cost 10k, or more plus there' are more and more tools needed including special tools that may be needed to work on a certain brand of vehicle. On top of that the overhead in NY is astronomical. A good tech like this man is worth top dollar.
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Johnny
Eric,
That Black Thing is a Surface Mount IC. If you could get the chip it's an easy repair for an electronics tech. I know this was three years ago. I have had to make some similar repairs for my dad and brother's trucks. The key is being able to get the IC chip but a lot of them are pretty readily available. The burn marks are a sure indication water got underneath that chip and shorted the leads that are soldered to the circuit board. Just an FYI.
JohnnyG
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Eric,
That Black Thing is a Surface Mount IC. If you could get the chip it's an easy repair for an electronics tech. I know this was three years ago. I have had to make some similar repairs for my dad and brother's trucks. The key is being able to get the IC chip but a lot of them are pretty readily available. The burn marks are a sure indication water got underneath that chip and shorted the leads that are soldered to the circuit board. Just an FYI.
JohnnyG
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Joseph
I ain't hating on Chevys it's a fact of life yeah right that's why you refer to them as shitties! That's funny my 96 Silverado spare tire still comes all the way down and it's been in Ohio its whole life and a farm truck imagine that yeah I know it's about to fall off any day now but it's still does work and believe me when I tell you that farmer did not take care of my truck he did all changes and all that but the rest forget about it anyway good video man
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I ain't hating on Chevys it's a fact of life yeah right that's why you refer to them as shitties! That's funny my 96 Silverado spare tire still comes all the way down and it's been in Ohio its whole life and a farm truck imagine that yeah I know it's about to fall off any day now but it's still does work and believe me when I tell you that farmer did not take care of my truck he did all changes and all that but the rest forget about it anyway good video man
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GooE
Power probe first. Then load it for integrity test, if you want. Why not just throw an amp clamp with your Pico around the fuel pump wire and scope it as it resets the breaker? That would answer the question immediately. Also, pick up some circuit breakers for your fuses. Save money and time. I'd also be careful about dead-heading a PWM fuel pump. Good way to blow some weak fuel lines. haha. Oh, I'll watch the video first next time. haha
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Power probe first. Then load it for integrity test, if you want. Why not just throw an amp clamp with your Pico around the fuel pump wire and scope it as it resets the breaker? That would answer the question immediately. Also, pick up some circuit breakers for your fuses. Save money and time. I'd also be careful about dead-heading a PWM fuel pump. Good way to blow some weak fuel lines. haha. Oh, I'll watch the video first next time. haha
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Bayviewnick
In another video, while you were testing the circuit on a vent valve, you said to NOT use a headlight bulb as it 'will never light', I would say due to the volts/amps it draws yet in this video you are using a headlight bulb. Is the voltage/amperage to the FSCM of sufficient voltage/amperage to illuminate that bulb? What did I miss?
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In another video, while you were testing the circuit on a vent valve, you said to NOT use a headlight bulb as it 'will never light', I would say due to the volts/amps it draws yet in this video you are using a headlight bulb. Is the voltage/amperage to the FSCM of sufficient voltage/amperage to illuminate that bulb? What did I miss?
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DaBuGzLiFe
Is the ITBC module the same as FSCM in these trucks? I have a Service Trailer Brake system and so far I've changed the respective fuses and the Relay related but I'm confused as to where the ITBC module is. This truck only has an FSCM and it looks exactly the same as the ITBC module.
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Is the ITBC module the same as FSCM in these trucks? I have a Service Trailer Brake system and so far I've changed the respective fuses and the Relay related but I'm confused as to where the ITBC module is. This truck only has an FSCM and it looks exactly the same as the ITBC module.
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Brett
Thats a terrible spot near the spare for that driver module. I had to replace a FP control module today in a 2015 Transit 250.
I believe Thexton makes an awesome Chevy spare tire removal kit for those trucks. Works well and made in the USA
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Thats a terrible spot near the spare for that driver module. I had to replace a FP control module today in a 2015 Transit 250.
I believe Thexton makes an awesome Chevy spare tire removal kit for those trucks. Works well and made in the USA
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Victor
You can fix that pair of pliers. close them tight and put them in a vise. then drill a 3/16 hole from the end of the jaws to the center. you can put them on bolts like you're doing and they won't keep popping off.
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You can fix that pair of pliers. close them tight and put them in a vise. then drill a 3/16 hole from the end of the jaws to the center. you can put them on bolts like you're doing and they won't keep popping off.
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