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2003 Chevrolet Silverado 2500 HD LS 6.6L Transmission
Posted to GM Transmission on 3/24/2011 7 Replies

I have 2003 2500HD in shop with codes listed. It doesn't shift out of first gear in any range and sometimes comes out of gear into a false nuetral. Brake light and ABS light on, instrument reads "service brake system" and "transmission range inhibited". On upp...

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car Vehicle Data

2003 Chevrolet Silverado 2500 HD LS

VIN 1GCHK29173
Engine6.6 L / 8 cyl / DIESEL
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
AffectedTransmission
Conditions1st Gear Only, Sometimes False Nuetral
Message Closed

car Vehicle Data

2003 Chevrolet Silverado 2500 HD LS

VIN 1GCHK29173
Engine6.6 L / 8 cyl / DIESEL
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
AffectedTransmission
Conditions1st Gear Only, Sometimes False Nuetral