Everything I tried didn’t work until I tried this thank you for sharing this

Had this issue for the longest . From the pedal sensor , tot he throttle body , occasionally popped up on my 2007 Tahoe . Until one day on the on the freeway while it was raining it reduced the power (speed) and drove me out of control , thank god I’m alive . And survived to tell it . Sold the car immediately . Just before that I took it to the dealer for diagnostic before I gave up on it , and the solution which was not for certain was at 4K for starters , I better invested in a newer car .

Just wanted to say I ran the grounds just like you did and it’s running amazing. Replaced the throttle body, the throttle body sensor and the MAF sensor before doing the grounds and it works perfect

I've been a mechanic for over40 years. I've worked on just about everything. With that being said I also used to work on fire truck for the air force. The alternators often put out over 300 amps. There have been a few times that I would have a voltage drop between the alternator case and the engine block that it was mounted to. It would loose some grounding Thu the bolts and brackets. I would connect a ground cable from the alternator case, engine block and body of the vehicle. This would give me maximum charging and prevent my gauges and lights from dimming and give bad readings. Hope this helps. By the way the battery in the Tahoe should be reading 12.6 volts not 12.2 as I saw on the post. You probably have a battery cell going bad or the battery needs a charge. Enjoyed your posts, reminded me of the good old days. I know what you mean about getting older. Hard to get anything done.

The code can be caused by a faulty throttle body, TPS sensor, as well as a few other sensors. The ground problem is easy to fix, I removed the engine ground and grounded the alternator body directly to the battery. I also am using a top post battery with military terminals!

Thanks for this video!! Far behind helpful than any vids on you tube!!! Very detailed information 👌🏼 👍🏼

Thank u for your help i am having the same problem samething as you am goin to do tjis and prsy it fixes my problem

Good to see you out and about there Bear! There are GM Bulletins on the Throttle Body issue. If this didn't fix it, at least you will know for sure that it is not a Ground problem. I would coat all the newly exposed surfaces and the wire terminals with either dielectric silicone grease or second choice, fluid film or Zep 2000 clear spray-on grease. Anything to slow corrosion from re-occurring. Now go inside and treat yourself to some hot coco! Hopefully you will be warmed back up enough to do the live show later on. I hope SC is feeling better too. Take care Bear and God Bless you my friend.

Good job! Want to give ya a big hug!

Tanks for the video my friend

Dirty oil will throw it into limp mode also . I only mentioned it cuz i been there and done that also you dash says to Change oil . Remember to reset the engine oil life on the computer

12.1v, the battery needs charged and checked. This code also pops up with low voltage as well as the p1518 TAC module code

Cool channel…….subbed👍🏼 Looks like you put a high volume oil pump in by the pressure. Had a Melling put in mine last year and have almost 80 psi with fresh oil on throttle.

I'm going to check my Body Ground that you showed u cleaned and see if it helps stop my battery from draining every couple days

good to see you fixed it

Good job worked for me

good info bear

Its possible for the connector at the throttle body to be an issue. If you have a live data stream from the two throttle voltages, wiggling the connector can sometimes cause that voltage to change, which isnt good

Mrs bear can i use 4 gauge cable to ground!? Thank you

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Hey man where did you mount the ground wire to on the computer exactly? AKA the other side of the ground wire you mounted that’s near the engine block (near the alternator). Please I need help!

Thanks i will try to add grounds.

Shouldn't you be cleaning all grounds to chassis?

What size gauge ground wire did you use? Thanks in advance!

Could a low batter cause this becasue I've added the grounds amd mine continues to do this. My fuel pump died on me and after replacing fuel pump,filter and throttle body I've had nothing but issues t keeps throwing the tac module code. Which think is p1516 code I can clear and it'll run fine until I have to slow down r stop to idle

Tahoe 2003 4.8, starts fine but shuts down if I put it on Drive, no check engine though, any thoughts?

Hello I'm having a problem with the knock sensor in my 2003 GMC Yukon XL 2500. I've changed the original sensor, wire and refrigerator face three times, yet the Check Engine Light is still on. The codes that appear on the scanner are P0300, P0332, and P0327. I also changed the spark plugs with the wire, and used #41-110 spark plugs as recommended by the parts store, even though the recommended spark plug number for my car is 41-962 according to the chassis number. I would like to know if the problem may be caused by using #41-110 spark plugs instead of 41-962. Please let me know as soon as possible. Thanks

Reduced engine power is starting to happen in my 02 Denali

Can you help me with my 2016 suburban it turns on but nothing is starting had in the shop and they could fix it either

Great video. Couple questions. 1. How did you modify that battery cable? Did you cut that rubber out with a knife? 2. Did you clean your grounds with a wire wheel attached to a drill or something?

Hay man I watch your videos my name is Ron I found a 400 sbc 2 bolt main wanna do a 377 have you ever used a dont of 30-30 cam

added grounds did not fix the issue now i am replacing the throttle body

Update, Did the problem come back? I'm trying this right now

From my experience the reduced engine power is usually a battery issues

You dont show when you connect the grounds to the bracket on the altenator, and you just point to the computer , dont show how and exact bolt u un screw to connect to the tcm, kinda fishy