1999 GMC Yukon Denali from North America - Comments

I have a 1999 Yukon Denali, woke up to go to work and I couldn't start it. All I got was two clicks that sounded like they were coming from under the steering wheel. I had all power. I took off the starter and had it tested and it passed. I have been experiencing the same problems with the radio, it cuts on and off while driving over bumps. I have tried to troubleshoot just keep on getting nothing. Now my radio won't play and it reads LOC. Please help.

I have a 99 Denali with roughly 167,000 on it. I love my truck but like many who post here I've had my share of problems.

Electrical - driver seat heater has a mind of its own. The auto on/off headlights stopped working at 85,000 miles or so. The rear turn signals/brake lights keep blowing. Recently, my stereo turns off at random.

Brakes - I really have no clue as to what GM was thinking when they decided to go with the brake setup. Wayyy to small!! I've replaced my pads and rotor at least 5 times. Also, my rear drums are never adjusted right. They work fine for a month or so then for some reason they lose their stopping power.

Under the hood - Replaced Intake Manifold Gasket due to coolant leak. I've replaced the water pump too. The a/c lines were replaced at 120,000 miles. The oil lines are leaking but nothing that requires immediate attention. It misfires and shutters at 70mph but I've been dealing with it.

Just last week it left me stranded. Whenever I get on the gas it "chokes" and the rpm's drop like its going to stall. As soon as I let off the gas it returns to normal idle and its fine. Maybe a fuel problem?? Anyone experienced this??

Overall, it's a good truck and a tank in the snow! It's probably time to part ways with it but I can't seem to let her go!

Just bought my 1999 Denali a few days ago and had already read up on all the typical problems. Seems right on track with the info on this forum.

I have a burnt fog light and the driver's seat and rear seat heaters do not work. I didn't try the rear ones with the seat belt on yet.

The brake issues are obvious, but I don't think it much different than my Ford Expedition.

I had a 99 Mustang GT and we have a F150 Supercrew and they both have the same electrical issues as the Denali - huh?

Thanks for all the info.

I'm also in the same boat... 1999 Denali (bought it new and 160k miles now). Lots of work to keep it.. but still love it, and hard to let it go.

Original brakes suck. I replaced mine with Stillen's Brembo big brake kit and SSBSC rear disc conversion. I also installed a MSD 6A ignition amp, coil, and wires, and the truck fires up at the touch of the ignition, and idles perfect.

Repairs:

- Fuel pump

- Intake manifold gasket + water pump (I changed my coolant to green... no more Dexcool)

- Injectors fixed (but still not the latest update)

- Windshield wiper -- The circuit board was replaced (easy)

Mods:

- Skyjacker 2.5" lift kit with add-a-leaf & Rancho 9000 shocks

- Urethane bushings, and new ball joints/pitman/idler arms (no more rubber in the suspension and it feels great.. very tight and responsive.

- Brembo big brake kit (front) / SSBC rear disc conversion (rear)

- MSD 6A ignition box/MSD coil/MSD 8.5mm ignition wires

- CFM tech throttle body with K&N intake filter kit.

Problems that need to be addressed:

- Sagging door (will change bushing soon)

- AC compressor (purchased new Sanden 1 piece housing compressor- made in the USA) just gotta install soon

- Install Transgo shift kit & extra ATF cooler

- Driver seat heater not working

- Some of the lighting on stereo buttons out

- Dash lighting goes out sometime, and back on when light switch is used

- Steering wheel position sensor jerked steering wheel once.