I have a GMC 2003 Envoy XL
, SLT 4.2 liter automatic 4X4. When driving my trans shifts fine except from 3rd to 4th gear. the engine
races and rpm goes up while its trying to shift. IF I keep reeving engine then it will eventually shift and run fine. no slipping in any gears.
JA: Sometimes things that you think will be really complicated end up being easy to fix with a GM. The GM Mechanic I'm going to connect you with knows all the tricks and shortcuts.
Customer: When will he respond to my question
JA: Are you hoping to fix this yourself?
Customer: It depends on what is causing the problem. I'm thinking of changing out the trans without having it diagnosed first.
JA: Is there anything else the GM Mechanic should be aware of about your GM?
Customer: Not that I know of at this time. Vehicle runs good except shifting into 4th. There are no engine codes.
JA: OK. Got it. I'm sending you to a secure page on JustAnswer so you can place the $5 fully-refundable deposit now. While you're filling out that form, I'll tell the GM Mechanic about your situation and then connect you two.