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reduced engine power

reduced engine power

Postby 2010 Midnight Blue [OP] » Aug 18 2010, 8:49pm

While driving home last night, all of the warning lights on my instrument panel lit up, the engine tried to stall and eventually locked up the brakes for a second or two. I've only had the truck for a couple of months and it was bought new. Called onstar and they did two diagnostic tests which didn't reveal a thing. They seem to think it went into reduced power mode but aren't able to tell me why. Everything went back to normal but then the stabilitrak warning light came on telling me to service that. When i got off of the highway that too went away. So, does anyone know what the heck could be wrong? I have an appt with the dealer in the morning.
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2010 Midnight Blue
Firing on 2 cylinders [L1]
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Re: reduced engine power

Postby plumber802 » Aug 18 2010, 11:47pm

Sorry,no idea what it could be.Hopefully the dealer can diagnose the problem.I don't like the idea of the brakes locking up.Please keep us posted as to the outcome.
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Firing on 5 cylinders [L1]
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Re: reduced engine power

Postby miserytom » Aug 19 2010, 12:34am

its probly a simple sensor, too much computer stuff now a days lol cause a huge mess over sumthin small lol
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Re: reduced engine power

Postby McDuck » Aug 19 2010, 2:02am

This will be interesting to find the solution.... My thoughts- Data bus! multiple warning lamps with no codes. keep us posted
We, the unwilling led by the unqualified, have been doing the unbelievable for so long with so little, we now attempt the impossible with nothing...
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Re: reduced engine power

Postby miserytom » Aug 19 2010, 2:15am

im also thinkin maybe a loose connector on the computer lol
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Combustion on 1 piston [L2]
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Re: reduced engine power

Postby 2010 Midnight Blue [OP] » Aug 19 2010, 3:58am

Well, I sure hope it's something simple. I'll update tomorrow.
Original Poster
2010 Midnight Blue
Firing on 2 cylinders [L1]
Firing on 2 cylinders [L1]
Posts: 27
Topics: 6
Images: 2
Joined: Aug 06 2010, 7:15pm
Years of membership: 4 years of membership4 years of membership4 years of membership4 years of membership
Location: North Carolina
Year: 2010
Make/Model: GMC Sierra
Extra Info: 5.3L Crew Cab
Group Membership:
Registered users

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