How do you open the hood on a 1999 Volvo big truck?

There isn't a single "1999 Volvo big truck". Volvo makes several models of heavy-duty trucks, and the hood release mechanism varies significantly between models (e.g., FH, FM, FL series, etc., and even within those series depending on the year and specific options).

To open the hood, you'll need to:

1. Locate the hood release lever or cable: This is the most crucial step. The location differs drastically depending on the specific truck model. It might be:

* Inside the cab: Look near the steering column, under the dash, or on the driver's side door panel.

* Outside the cab: Sometimes there's a release lever or cable under the front of the truck, near the bumper or grill. This is less common on newer models but possible on older ones.

2. Operate the release: Once you find it, pull the lever or pull/push the cable. This will usually unlock the hood latch.

3. Lift the hood: After releasing the latch, you'll need to manually lift the hood. There might be a small notch or handle near the leading edge of the hood to help you get a good grip.

To find the exact location, you MUST:

* Consult your owner's manual: This is the best resource. It will have diagrams and instructions specific to your truck's model and year.

* Check online resources: Search for "[Your Volvo Truck Model Year] hood release" on Google Images or YouTube. Pictures and videos can be very helpful.

* Ask a Volvo mechanic or a Volvo truck owner: Someone familiar with the specific model will know immediately.

Without knowing the precise Volvo truck model (e.g., FH12, FM9, etc.), providing more specific instructions is impossible. The process is significantly different between models.