Check Engine Light" and the "Reduced Engine Light" come on at the same time?

2003 CHEVROLET TRAILBLAZER
85,000 MILES • 6 CYL • 4WD • AUTOMATIC
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KPEGUES
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While driving my vehicle, all of a sudden the "Check Engine Light" and the "Reduced Engine Light" come on at the same time. The vehicle suddenly slows down to about 10 miles per hour. If I turn the car off and wait a minute, it will start right back up and I can drive normally again. What is this?
Aug 15, 2009 at 5:14 PM
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SERVICE WRITER
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The sudden appearance of the "Check Engine Light" and the "Reduced Engine Power" warning, along with a significant loss of speed, is a common issue in many vehicles,
Aug 16, 2009 at 9:33 AM
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KPEGUES
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I noticed another person had the same problem I had with their 2003 Trailblazer - the reduced engine speed light came on while driving and the car speed suddenly dropped to about 10 mph - has there been a recall or problem with this malfunction and trailblazers?
Aug 16, 2009 at 11:06 AM
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No recall I'm aware of, Some problems are more common with similar components.

Follow that person's thread for potential information.

Did you get the codes yet?
Aug 16, 2009 at 6:53 PM
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MJ_ORIGINAL
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Similar deal: CHK ENGINE, REDUCED POWER
2002 LS 4.2L 2WD AUTO
310,000 MILES, REBUILT 265,000
CODES: P1614, P1345

NEW/RECENT
ALL PLUGS AND COILS
MAP, CRANKCASE AND CAMSHAFT POSITION Sensors
Aug 20, 2023 at 9:24 AM
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STRAILER
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Here's what each code indicates:

P1614 - Loss of RIM Serial Data:


P1345 - Crankshaft/Camshaft Position Sensor (CMP/CKP) Correlation:
Aug 20, 2023 at 12:37 PM
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MJ_ORIGINAL
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Thanks for the prompt reply!
I erred that the -1614 is actually
P1514. Your code information seems close to what I've found online, a timing conflict. Is that correct?

The only sensor left to swap out is the VVT solenoid. At 300k+ miles I'd say I've gotten my money's worth; I don't know.
Just to 'pop the lid' on the timing chain cover is considerable.
What next steps would you suggest?
Aug 20, 2023 at 1:26 PM
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STRAILER
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known as the Throttle Body Control Module (TBCM). This code points to an issue with the Throttle Position Actuator Performance.
Aug 21, 2023 at 9:28 AM
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