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Anonymous Posted on Jan 26, 2013

What causes the reduced engine power on chevy avalanche, what corrects this problem

Upon periodic starts reduced engine light comes on and really reduces the power on the

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Anonymous

  • 508 Answers
  • Posted on Feb 17, 2009

SOURCE: 2002 reduced engine power light

You have some kind of ECU problem. You will need to hook to the diagnostic port to find the problem. Your vehicle has gone into limp mode. This enables the vehicle to run, but at a diminished level until you can seek help for the problem. Do not continue to drive it this way as you may cause damage to the engine depending on the nature of the problem.

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Anonymous

  • 114 Answers
  • Posted on Oct 15, 2009

SOURCE: reduced power p1516 code

P1516 Throttle Actuator Control(TAC) Module Throttle Actuator Position Performance

This is your problem and should be taken in to chevy for repair

motor1258

Mike Butler

  • 6674 Answers
  • Posted on Dec 12, 2009

SOURCE: 2006 Chevy Impala reduced engine power

best bet is to stop in at a Pep Boys, Autozone, or similar big autoparts seller, and ask for free trouble code scan, which should pinpoint area causing problem. If not obvious by codes, what is necessary to repair the problem code, get back to us with those codes and we will be glad to assist you further. Better this way, takes away the guess work, and saves you money, as well as getting it right the first time.

Anonymous

  • 63 Answers
  • Posted on Jan 06, 2010

SOURCE: 2005 chevy cobalt, car wont start ... check

disconecting the battery should reset the pcm. but you will need to find out what caused the problems.

Anonymous

  • 396 Answers
  • Posted on Jan 16, 2010

SOURCE: reduce engine power 2007 chevy uplander

Sopunds like the computer has gone into a limp mode. You need to take it in for a professional diagnosis.

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1answer

2005 Chevy Avalanche Z71 - whistle tied to revs, possible vacuum leak, any ideas?

A vacuum leak would cause the check engine light to come on and throw a code. It is more likely mechanical. Ideas in the link.

https://www.google.com/search?q=2005+Chev+Avalanche+Z71+-+whistle

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I have an 07 avalanche z71. I was driving the other day and the truck went into reduce engine power traction control disable check engine light and service air bag. Now it does it after five miles.

Get a computer diagnostics done and it will likely tell you what is wrong. You can buy readers now for less than $100.00. Otherwise you are really guessing.
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3answers

2003 Chevy avalanche reduce engine power what does

have it scanned usually this is a problem with the throttle actuator
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Chevy reduced engine power

check all harness connections for water
check for water at the ecm connections if under bonnet
check for water wet air filter
good motto --don't drive through water deeper than the tires from road to rim
0helpful
1answer

Reduced engine power

LIMP IN MODE re-set your pcm if it re-occurs you may have a transmission slippage issue or a faulty shift selonoid in transmission. with stabilty control feature on some models a bad wheel speed sensor or hub bearing can cause the same but usually accompanied with ABS light
0helpful
1answer

I don't know if it is an EGR problem or what kind of problem it is. Have a 2005 Chevrolet Avalanche with Reduced Engine Power light coming on, a year ago we replaced the throttle body sensor after it was...

2005 Chevy Avalanche.And you did the Throttle body sensor. Reduce power light coming on, APP and TPS that a shot in the dark, As for the EGR if that is a problem The vehicle is a speed density it also uses a MAF (mass air flow) . Whenever that light comes on I'm finding it in the transmission parameter not the TPS or APP (accelerator pedal position) first the 2005 Transmission has a high failure record, There is a transmission pressure control solenoid that is given wrong input data and send the transmission to self destruct. If this is your second problem similar to last year go ahead put a throttle body sensor, but the APP need to be in sequence with it. As for the EGR no it wont cause sluggish failure it is monitored by the MAF if the MAF fails then its back up by the MAP. For the reduced power light get the ECM reflashed
0helpful
1answer

03 avalanche z71 reduce engine power came on whats the cause

Did your check engine light come on? To really determine the issue you need to hook a scanner up to your vehicle and pull the codes. Once you know the codes then you have the information for a diagnosis.
5helpful
2answers

2005 chevy cobalt, car wont start ... check

disconecting the battery should reset the pcm. but you will need to find out what caused the problems.
5helpful
4answers

Why does reduce engine power light comes on chevy

That is a hard problem to pin point without knowing what codes the computer has stored. It can be any number or sensors or engine problems.

You can go to most auto parts stores and they will pull the codes for you for free.
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