LOW LINE PRESSURE OR PRESSURE REGULATOR VALVE STUCK AFTER PUMP COVER REPLACEMENT

摘要

MODELS. 2006-2015 GM Passenger Cars and Trucks equipped with 6L80 or 6L90 Automatic Transmission (RPO MYC or MYD). CONDITION. After installing service pump cover P/N 24248573, a transmission may have low line pressure. If the low line pressure is not identified and corrected, clutches may be damaged during operation. This condition may be caused by Rust Inhibitor material in the service pump cover sticking the pressure regulator valve (#233), isolator valve (#236) or by plugging the small orifice (#5) in the isolator valve sleeve (#237). The Rl that can cause an issue is a thick, waxy substance.