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Article Comments: 2007 Chevy Silverado Full Test

39 messages,  Last post on Nov 23, 2010 at 9:40 AM

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What is this discussion about? Chevrolet Silverado 1500, Truck

Article comments for Full Test: 2007 Chevrolet Silverado - With its much improved interior, refined ride quality, strong engine and long list of available features, the Chevrolet Silverado is a full-size truck with few faults.(more)

Messages Page 3 of 4

#20 of 39 Reduced Engine Power light by trishn

Feb 25, 2007 (3:16 pm)

My 2007 Chevy Silverado has 7150 miles. Today, the Reduced Engine Power light came on when starting it. The engine was rough so I turned it off, waited a few minutes, then it started correctly.
 
The engine emblem on dash stayed lit and on constantly...not blinking.
 
I love my truck! I have a seven year warranty. Does anyone have any idea what may be going on?
 
Thank you in advance!
 
Trish

#21 of 39 Re: Reduced Engine Power light [trishn] by mich7

Sep 11, 2007 (4:08 pm)

Replying to: trishn (Feb 25, 2007 3:16 pm)
Hi Trish,
 
We bought our 2007 Silverado in May and it's been in the shop for three months ied in total over 4 incidents of Reduced Power. The last incident almost put me over an embankment because I lost steering and brake power.
 
Are you still having problems with yours? If so, stop driving it because it is dangerous. Do you have On Star? We had On Star run engine diagnostics each time and three out of four times it showed a problem.
 
I love the Silverado truck too but I'm not willing to drive something that isn't safe. An Engineer came out from Head Office and said to replace our truck with a new one and then HO over turned that decision.
 
I've been happy with our dealership but GMAC could take lessions from them. Disappointing considering we had a GM before buying this one and also have a 2007 HHR. We were/are happy with them but when I needed GM in times of trouble, they let me down.
 
If anyone else has experienced a Reduced Power problem, I'd love to hear about it.
 
Mich
British Columbia, Canada

#22 of 39 Re: Reduced Engine Power by trishn

Sep 17, 2007 (7:15 am)

Hi Mich:
 
My problem was solved when I removed my gas cap, put it back on correctly, and tightened it. It was not sealed properly when I put gas in and drove for awhile. The reduced engine power message went away. Fortunately, it has not happened again.
 
I hope this will help your problem as well.
 
Trish
Southern California

#23 of 39 Re: Reduced Engine Power [trishn] by jacktheblack1

Sep 18, 2007 (6:10 pm)

Replying to: trishn (Sep 17, 2007 7:15 am)
Did you ever get this solved. I have a 2007 Silverado and the reduced power light came on and my truck died. Let it sit for 3 minutes and it starts again the just does this over and over. It has been at the dealer for a week and they cannot solve this. The truck has 600 miles on it.

#24 of 39 reduced power light 2007 Silverado dies by jacktheblack1

Sep 18, 2007 (6:16 pm)

Need an answer why the reduced power light comes on and my 2007 Silverado dies. Chevy scratching their heads. Truck has 600 miles been in the shop for a week.

#25 of 39 Re: Reduced power light 2007 Silverado by trishn

Sep 18, 2007 (7:43 pm)

Yes, the problem is resolved. The first mechanic I talked to said he thought rats may have gnawed away at some wiring! Really. :o)
 
You know how it is better to crash with a full tank of gas versus a partially full tank? Reason being that the fumes cause the explosion with a partially full tank. It's a sort of compression.
 
When my gas cap was not sealing properly, this caused a leak of sorts (fumes released) in the gas tank. My engine was not getting the gasoline it needed to run properly. I had the same experience you did....starts...then stalls.
 
After taking off the gas cap, then putting it on properly, I let the truck sit overnight. In the morning, it started with no problem, and has never happened again. I make it a point to screw the cap on right, each time I get gas.

#26 of 39 Re: reduced power light 2007 Silverado dies [jacktheblack1] by mich7

Sep 18, 2007 (11:33 pm)

Replying to: jacktheblack1 (Sep 18, 2007 6:16 pm)
Not yet, has been in the shop since July 24th--paying for a truck I don't have. You might try what Trish suggests.
 
I'm a little leery to drive it though since I nearly went off an embankment with it when the brakes and the steering failed. An engineer from HO has been out, can't find the problem but knows there is one because Onstar found it 3 times. Onstar identified it as a default with the throttle box so that was replaced. Happened again and GM replaced the computer, the next time it happened they replaced the harness and now have done that again. It has been mysteriously quiet on the GM side.
 
We were told we'd get a replacement truck. A couple of days later they had changed their story based on "new information".
 
What are they telling you?

#27 of 39 Re: Reduced power light 2007 Silverado [trishn] by mich7

Sep 18, 2007 (11:37 pm)

Replying to: trishn (Sep 18, 2007 7:43 pm)
Thanks Trish,
 
If I get it back I will definitely check the gas cap! What a lark that would be after 3 months of agony--maybe they'll recall the gas caps.

#28 of 39 Re: Reduced Engine Power light [trishn] by jacktheblack1

Sep 19, 2007 (6:21 pm)

Replying to: trishn (Feb 25, 2007 3:16 pm)
Did you get an answer? Need an answer why the reduced power light comes on and my 2007 Silverado dies. It then starts one min later runs for 2-3 the turns off again. Just keeps repeating this. Chevy scratching their heads. Truck has 600 miles been in the shop for a week. The dealer just ordered a new ECM for my truck waiting to see if this fixes the problem.

#29 of 39 Re: Reduced Engine Power light [jacktheblack1] by mich7

Sep 19, 2007 (8:48 pm)

Replying to: jacktheblack1 (Sep 19, 2007 6:21 pm)
Sorry, no answer from GM as to what the problem is--it is the same as yours although our truck hasn't always started up right away. They are scratching their heads with mine as well.
 
So,GM has no idea what is wrong with it. They are guessing and have admitted as much. But, they aren't willing to replace the truck. Instead, they want me to take it back after they have run it through 1000 kms--to see if they can replicate the problem, of which they never have been able to do. And considering I live in area built on hills, I'm not willing to take back this obvious saftety risk. What if it stalls while pulling out onto our busy highway or dies while driving through a mountain pass with cliffs or rock walls to land in/on?
 
I don't know where you are but you need to call GM customer service to issue a complaint and ask to go directly to the Management Team because it's an issue beyond the normal customer service stuff. If you live in the States there are Lemon Laws to help you out--do a Google search. In Canada there is the Canadian Motor Vehicle Arbitration Plan--it's free but only applies to personally owned vehicles--in other words, no company vehicles qualify. If it's a company car talk to them anyway and they'll steer you in the right direction. (no punn intended.)
 
Whats an ECM? Computer? It didn't work for my truck.
 
Let me know how things are going and I'll keep you updated on this end.
 
Good luck.

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