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94 Rodeo passengers reverse light stays on in all gears

5 messages,  Last post on May 31, 2009 at 9:09 AM

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#1 of 5 94 Rodeo passengers reverse light stays on in all gears by direwolf1972 Feb 26, 2008 (11:51 am)
Hello, I'm new to the forum and could use some help. I am semi handy with a wrench and would like to try to figure out what the problem is myself before taking it into a transmission shop and paying big bucks.    When I bought the truck it had just had the transmission replaced with one from a junkyard. The previous owner said it was stuck in second gear so he had it replaced. I'm not sure if the problem existed before the tranny swap.    All I know is that now no matter what gear I'm in the backup (reverse light) stays lit on the passengers side tail lamp. I've tried changing the tail lamp. My previous truck was a 95 Passport so I had an extra set around.    Do you think that the transmission shop that they guy had replace the transmission hooked up a wire incorrectly? Is there another cause that anyone can think of for this?    First thought off the top of my head was that the wiring bundle going to that tail light might be grounded out somewhere down the body. Finding a grounded out wire can be a nightmare though and would like to start with the easiest to fix ideas first.    Thanks for any advice in advance. Paul Replies to this message: okmech1 (Feb 27, 2008 4:46 pm) tfleetmo (May 31, 2009 9:09 am)
#2 of 5 Re: 94 Rodeo passengers reverse light stays on in all gears [direwolf1972] by okmech1 Feb 27, 2008 (4:46 pm)
Replying to: direwolf1972 (Feb 26, 2008 11:51 am) I have the service manual for a 2001 so this may or may not help..   On the wiring diagram for the exterior lights, there is only one switch between the fuse for the b/u lights and the bulb itself called the 'mode switch, back-up' (auto) or back-up lamp sw (manual). It should turn both lights on, so I'm thinking either it's stuck on and the drivers light is out, or like you said, that bulb is grounded. Each of those back-up bulbs share a ground with their respective turn signal, so If by turning on the blinker and something changes, that may get you closer.   Hope that helps
#3 of 5 Another odd thing about the transmission by direwolf1972 Feb 28, 2008 (5:21 pm)
I hadn't thought about it till I went on a road trip today. The "upshift" light comes on even in fifth gear. As I was saying I've had 94-97 Rodeo's and Passports in the past, I don't remember the upshift light coming on in top gear. I could be incorrect about this as the past can be fuzzy some days   The upshift light being on in fifth is another reason I think there could possibly be a problem with how the wires were hooked up when the transmission was replaced.   Anyone else have this issue? Replies to this message: okmech1 (Mar 03, 2008 6:15 pm)
#4 of 5 Re: Another odd thing about the transmission [direwolf1972] by okmech1 Mar 03, 2008 (6:15 pm)
Replying to: direwolf1972 (Feb 28, 2008 5:21 pm) hmmm, good one!   Not sure how the upshift light gets it's signal. What did you find out about the light?
#5 of 5 Re: 94 Rodeo passengers reverse light stays on in all gears [direwolf1972] by tfleetmo May 31, 2009 (9:09 am)
Replying to: direwolf1972 (Feb 26, 2008 11:51 am) did you ever resolve this issue? I have a 96 Rodeo which has been sitting in my driveway for over a year, but still runs. However, the rear, backup lights turn on when I shift into 1st or 2nd gear and does not turn on when shift into reverse. Odd! I think it may be the battery, but my batter is only 2 years old.   Curious if you found the answer. Thanks   Tracy

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