Question about 2001 Chevrolet Cavalier
Codes u1000, u1040,p0304,p0621.
the transmission won,t shift into overdrive unless you let off on the gas. also revs higher then usual and engine light and traction control light come on. can you help me with a starting point please
P0621 - indicates a failure in the alternator lamp curcuit.
P0304 - indicates a miss fire was detected in the #4 cylinder
U1040 - indicates a loss of communication with the ABS system
U1000 - Indicates a class 2 communication loss
None of those codes are relating to a transmission failure (P0700-P0702)
I would have a visual look at the transmission and verify that all electrical wires are connected and tight. Then I would have the transmission serviced if it hasn't been within the last 35,000 miles.
Have the trouble codes cleared and address the ones that return.
After that you may be looking at an internal transmission adjustment and/or repair.
Posted on Nov 24, 2008
a 6ya expert 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 repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Mar 31, 2014 | 1999 Chevrolet Cavalier
Feb 10, 2013 | 1994 Ford Ranger Supercab
May 21, 2012 | 2001 Kia Optima
May 20, 2011 | 1999 Dodge Ram
Mar 16, 2010 | 1997 Pontiac Sunfire
Feb 26, 2010 | 2001 Kia Rio
Jan 19, 2010 | 1992 Buick Roadmaster
Mar 09, 2009 | 2001 GMC Yukon XL
Dec 14, 2008 | 2001 Dodge Dakota
1,331 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: