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2000 Chevrolet Corvette 5.7L Code P1638
Posted to GM Driveability on 2/5/2019 9 Replies

Car came in with multiple [...] a defective battery and tightening the ground cable on the block solved some of the weirder ones. Was setting a P1637 code. (Gen L term.) Using GM's code chart (I should know better) led me to replace the alt. Now it charges...

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  Related Documents & Media  2000 Chevrolet Corvette

 
Message Closed w/FIX

car Vehicle Data

2000 Chevrolet Corvette

VIN 1G1YY32GXY
Engine5.7 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsCode P1638
OccursIntermittently

Trouble Codes

P1638TCM Internal - CAN 1 RAM Performance
Message Closed w/FIX

car Vehicle Data

2000 Chevrolet Corvette

VIN 1G1YY32GXY
Engine5.7 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsCode P1638
OccursIntermittently

Trouble Codes

P1638TCM Internal - CAN 1 RAM Performance