the catalyser can couse loss of power problems if its deteriorated
Trouble code P1391 means: Intermittent loss of CMP or CKP
Since both windows on the front of the caravan do not work it is a common power issue. Check the window fuse and relays first, to see where the power loss is.
Trouble code P1391 means: Intermittent loss of CMP or CKP
Check your fuses.
clogged cat
There is a recall, has do to with a speed sensor
Loss - 2002 was released on: USA: September 2002
No.
what cause a grand prix to not have a lot of power going up a hill or free way? It may be in need of a tune up including air and fuel filters.
Possibly
You are gonna have a rough idle and a loss of power but its still drivable
I have a 2002 Grand Prix and mine does this sometimes and I have to wiggle my battery cables and it will start right up but it could also be caused by a bad ignition or fly wheel I had a 93 Grand Prix that did the same thing. Problem was caused by a tumbler in the ignition switch being out of alignment; that would not allow the starter to receive power.