You are here: Forums SUVs GMC Yukon 07 denali XL fluctuating volt meter, alt or batt?

07 denali XL fluctuating volt meter, alt or batt?

2 messages,  Last post on Feb 07, 2009 at 9:48 AM

You are in the GMC Yukon Forum. Your Hosts are steve_ & tidester

What is this discussion about? GMC Yukon, GMC Yukon Denali, GMC Yukon XL, SUV

Messages Page 1 of 1 All Messages Displayed

Go To Msg # Search This Discussion

#1 of 2 07 denali XL fluctuating volt meter, alt or batt? by jjrho Feb 02, 2009 (12:47 am)
hi, 07 denali XL with 42K in so cal. recently wife couldn't restart the car at the school parking lot.... jumped it. i noticed the voltage used to be at 14V or slightly left of it usually but lately, it's at about 12.5 to 13V, btwn the two markers... BUT, it would sometimes go upto 14V again for a while then go back down again... i put the charger on so that we can at least use the truck but.... at this point, i can't figure whether it's alternator or battery.... the batt terminals are CLEAN, i haven't checked the fluid level and i can't see the green eye/not sure if it has one....'cause there is a large red plastic cover over the + side of the batt terminal ,where i think there may be an indicator 'eye'....   is it time to get a new batt? i mean, does bad batt behave like this as far as the volt meter is concerned?   btw, 07 at 42K.... is alternator still covered? do we have 4yr 50K on this truck?   pls advise,   james R so calif 07 denali   jjrhoadelphia.net Replies to this message: rsht (Feb 07, 2009 9:48 am)
#2 of 2 Re: 07 denali XL fluctuating volt meter, alt or batt? [jjrho] by rsht Feb 07, 2009 (9:48 am)
Replying to: jjrho (Feb 02, 2009 12:47 am) Have you verified that your 07 Denali XL is (or is not) a part of the recall took place in early 2007 to reprogram your Denali's on board computer regarding some power management... (basically to have Service Bulletin #07033 performed)? If not, contact your GMC dealer service department, they should be able to tell you if your vehicle is involved in the recall, and what to do next. My 07 Denali was a part of this recall, even since my dealer reprogrammed its computer, I have not had a single problem with the battery.

Messages Page 1 of 1 All Messages Displayed

Go To Msg # Search This Discussion

You are here: Forums SUVs GMC Yukon 07 denali XL fluctuating volt meter, alt or batt?