Question about 1990 GMC Suburban
Tansmission will not stay in overdrive
Posted on Nov 25, 2008
Ok the 1st thing to do is change the fluid and filter, while the pan is off look for excess debris from the clutch packs, there will be some stuff in the pan, but if there is allot then the clutches are starting to fail and you will need an overhaul, how many miles on truck, 60,000 is recommended change for trans fluid, also use the latest GM approved Dextron 5 fluid, it is the best around and makes old transmissions shift much better, I used it in my 96 Corvette and what a difference!
Posted on Oct 13, 2008
a 6ya Mechanic can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repair professionals here in the US.
click here to Talk to a Mechanic (only for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Nov 22, 2017 | Cars & Trucks
Jan 12, 2016 | 2003 Nissan Altima
Sep 02, 2013 | 2004 BMW 320 Cd
Nov 18, 2009 | 2003 GMC Envoy Xl
Nov 14, 2009 | 2004 Infiniti Q45
Nov 12, 2009 | Audi A4 Cars & Trucks
Oct 16, 2009 | 2003 Toyota Camry Solara
Oct 10, 2009 | 1992 Ford Explorer
Sep 30, 2009 | Kia Sedona Cars & Trucks
Jun 17, 2013 | 1990 GMC Suburban
131 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: