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2007 GMC Denali stalls after towing
After putting in 10w-40 oil I towed my TT over the blue ridge and the truck did quite a bit better. The hot low idle was smoother and oil pressure was 25 rather than below 20. While cruising the oil pressure was around 45-48, while before it was 17-18 at idle and 40 while cruising. While...- ryanmichael
- Post #119
- Forum: Engine & Drivetrain
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2007 GMC Denali stalls after towing
Thanks for the replies and direction. I'm going to test drive while pulling the trailer first to see if 10-40 oil helps. @HD_LS , do you think there are risks at all of going to the 10w-50? Engine tuning sounds good too. I'll read those threads you mentioned. I have a tru cool 40k Trans...- ryanmichael
- Post #117
- Forum: Engine & Drivetrain
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2007 GMC Denali stalls after towing
Hi all - First time posting here. Thanks for all your efforts to this point. I have a 2007 Yukon XL Denali with the 6.2. I bought it to tow a 6000 pound (when loaded) travel trailer for a cross-country trip coming up soon. When not towing I haven't had any problems. I recently had the...- ryanmichael
- Post #114
- Forum: Engine & Drivetrain
