My car won't accelerate when I push the gas,The RPM goes up but the truck coasts on 2002 GMC Envoy

My car won't accelerate when I push the gas,The RPM goes up but the truck coasts along, Could it be the computer or do I need to replace the transmisson? It burns gas when I drive it... it never did that before...

by in Detroit, MI on December 01, 2012
1 answer
ANSWER by on December 01, 2012
Have you checked the trans. fluid? It should burn gas when you drive! Do you mean burns more gas than usual? that is prob. due to trans. slipping.