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Blackbear Tuned, Swapping Ecm To Go To Dealership

nlloyd

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nlloyd Enthusiast

nlloyd

Posted
Posted

I have been noticing really poor gas mileage on my 07 Vortec Max. I have also noticed a "chirping" sound in the engine. It's not bad, just doesnt sound right. So, I have been wanting to take the truck in and get it looked over. It also happens that i just hit 50,000 miles. ALSO just yesterday, the check engine light came on. Took it to Autozone and the code reported "crankshaft sensor malfunction." However, the check engine light didnt come back this morning. So, i know i need to have the truck looked at, but i have a few concerns--given that i had Justin tune my truck december 08.

 

1. Should i take it to the dealership for the work?

2. If so, should I swap the ECM and TCM out for my stock ones? I am worried about them looking for a trouble code that is stored in the computer and finding an aftermarket program (since they WILL have to look at a code bc it is not showing up anymore). Also, if I swap the ECM and TCM, the dealer wont find a trouble code because the code didnt occur with the stock ECM/TCM, right?

3. If anyone knows a good mechanic in Dallas, I might rather take it there. I have an aftermarket 100k full warranty...any suggestions?

4. Something is wrong with my trailer running lights. When i tow any trailer at night, the running lights on the trailer wont light up. IT's not the trailer because I've towed them with other trucks. Any suggestions on fixing that? Could be a fuse, but i dont think it is.

5. DO you guys have any suggestions on standard "tune-ups" that need to be done on these trucks at about 50,000 miles? I feel like she just needs some TLC. She's not running great...

 

 

Any suggestions would help fellas. Anytime i have a question, i come to this forum. Can't trust the dealership to shoot me straight!

 

Thanks guys

 

Nick

brims Senior Enthusiast

brims

Posted
Posted

1) for warranty work, take it to the dealership.

2) for power train issues, I'd swap the computers, since the light went out, put the stockers in and see if the light comes back

 

4) check the fuses to be sure. Then get a multimeter and see if you get voltage at the pins on the 7 way with the lights on.

5) clean the MAF and throttle body to see if the truck runs better.

nlloyd Enthusiast

nlloyd

Posted
  • Author
Posted
1) for warranty work, take it to the dealership.

2) for power train issues, I'd swap the computers, since the light went out, put the stockers in and see if the light comes back

 

4) check the fuses to be sure. Then get a multimeter and see if you get voltage at the pins on the 7 way with the lights on.

5) clean the MAF and throttle body to see if the truck runs better.

 

 

Thank you sir.

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