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Ask Tristan Franklin Your Own Question
Tristan Franklin
Tristan Franklin, MASTER ASE CERTIFIED
Category: Transmissions
Satisfied Customers: 1608
Experience:  8yrs. exp. engine repair performance brakes electrical air condition
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I have a 2002 chevy with duramax engine with Allison

Customer Question

I have a 2002 chevy with duramax engine with Allison transmission , the following codes have been identified PO722 output speed sensor circuit no/low signal. PO847 transmission pressure switch solenoid D circuit stuck closed, PO872 transmission pressure switch solenoid E stuck closed PO 875 transmission pressure switch reverse circuit
PO 700 transmission control system fault on engine diagnostics.
question cost on repairs , driving short distance till repairs made ?
Submitted: 9 months ago.
Category: Transmissions
Expert:  Tristan Franklin replied 9 months ago.

The system have to be checked to be sure. Most possible cause would be a bad output speed sensor and park nuetral switch which would be around $300 in labor and not sure on both parts but a guess will be about $200. Worst case ace are you'll need a transmission pump which would be about $1200 labor and about $700 for the part. Please give a positive rating. Thanks