Pt.1 2007 Chevy 2500HD "Reduced Engine Power" Warning & Fault Code P1516 Repair @ D-Ray's Shop
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- เผยแพร่เมื่อ 24 มิ.ย. 2011
- This a very common problem with GM cars and trucks with "drive by wire" throttle. Luckily th' throttle body was good, and I was able to find th' source of th' problem.
Dont miss pt.2 where I show how to repair this issue.
• Pt.2 2007 Chevy 2500HD...
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I'm Susie's husband Bill. After 6 months, 2 dealers, $850 computer and throttle body clean my very frustrating intermittant problem still existed. Your tip led me to the problem and saved me $25,000 or so for a new truck- I will only add a pull tie applied nearest the plug made my every now and then problem an all the time problem and hence much easier to confirm a loose wire....and to then fix. Again Thank You so much!
Mr. Smith you are excellent! We just had this exact problem and your video helped find the broken wire (yellow one) and get the truck home to make the repair. You saved us hundreds of dollars in a tow and mechanic trouble shooting. Thanks.
This is great! Pointed me to the exact location and discovered I had several open connections. Not broken. but chewed on by some critter. Dismantled the connector and soldered the connections as shown and the problem is fixed. Thank you Don.
My friends and I were up in the mountains in California and the reduced engine power came on and we could not go more than 10 mph while we're were limping back to our cabin I looked up this video. We finally made it back checked the wires in the wire loom and it worked. Thanks for the help and Congratz on the 100th video
Hey D-Ray
Thanks D Ray! I had this problem on my way to work this morning. 5 degrees and ice on the road...that's not fun! Thanks for the video made my day better! God bless!
This problem happened this evening while I was driving my 06 Chevy Silverado 1500 LT. I found this video, and found it VERY useful! I had no clue what was going on, after no acceleration, I then restart my truck and still no acceleration and the "check engine" light appeared as well the "Reduced Engine Power" light. Although I do not have the tools to fix it, it will be going into the shop, but I now have the understanding! Thank you! :)
thank you so much. My husband is at his Christmas diner, he is a hvac forman, and I followed your instructions and got my GMC Yukon XL 8.1 to work and made the engine light go away. Now i just have to buy the replacement for the wireing before it goes out again. :)
I forgot to mention, my Mechanic did come up with a P1516 issue, you were so correct. Thanks again
I'm having this issue with my 03 sierra denali. I'll look into when it warms up a bit. thanks for the video and damn it's nice to see a real/normal person making videos.
I love your southern accent, D-Ray. My 2007 Buick Lucerne has that "reduced engine power light coming on " three times recently, and I've had my mechanic change the throttle body itself, and that fixed the problem for about a month but the message came back. This time he changed an accelerator sensor and the problem went away, but sure enough, in another month the goddamned, fucking, bitching, dreaded "engine has reduced power" message was back on, much to my dismay. My mechanic had told me he suspected it may be a wire harness problem but that would "be a huge job to fix and could run me a $1000!) I contacted another mechanic who used to work on my car but had moved to another garage, not that far away, and told him about it and he said, "he'd look at it, but wasn't promising me anything.") The Lucerne only has 62000 miles on it and otherwise has been a good car. This video is like a god send, a wire harness is a $180 part? It doesn't look like it should cost me a grand to get it replaced. Tomorrow I'm bringing the car to this other mechanic and tell him about the wire harness problem as you have described in this great video.
This was a great help. My 2003 Yukon with 166k miles triggered the REP warning three or four times a day last week and a DTC 1516. It turned out that my six year old battery was giving up and when I replaced it, the problem stopped. The shop manual says that one of the conditions that causes the DTC 1516 is when there is an irregularity with the vehicle charging system. The shop manual also says that 1516 forces the vehicle into REP or possibly for the engine to turn off. Sounds kind of dangerous, but I'm glad the problem was resolved. I went ahead and cleaned the throttle body and check the harness connectors anyhow. There was some carbon buildup, but everything looks good now. Thanks. .
You are the man! I do believe I owe you a case of beer if you are ever in the Vancouver area. That's right, I had the dreaded 'Reduced Engine Power' scenario last weekend and got the codes read (P0120, P0220) by gm dealer, limped home and found black wire with white stripe broken inside? not week though? weird, it was nice and copper color. soldered in back up and looks good so far! Thanks!!!!
These are the best shade tree mechanic videos I have seen on here. Very detailded and easy to see everything. Makes it look easy to fix you vehicle. Thanks
Congratulations on 100 videos. You put things in perspective. Thanks
Brilliant find, I am very impressed. Heading out to my 2003 Motor Coach with a Workhorse Chassis 8.1 Vortec right now to trouble shoot "Reduced Engine Power" P1516 code.
Hands down best repair video I've ever watched. Great explanation on everything thank you sir
Hey thanks for the great video! My truck is a bit older with the throttle cables, but I really like the idea of the tug test on those harnesses. I got the exact same wheels too
That's real helpful, man! I'm having the same thing in my camaro and wouldn't you know it - they still use the same wiring connector 5 years later.
Excellent video and explanation, these are the exact problems I just experienced. Thanks for doing a great job on this bud