2008 GMC Sierra 1500 - Answered Questions & Fixed issues

here it is, I pay too, and is best IMO https://eautorepair.net/Marketing/Default.asp not spam ever it is best. 2nd best is alldata

At this website www.reliable-store.com I found all complete guide,much better language, complete detail in 800+ pages, ..and they also have live chat for instant help feature

bend paper clip in hook, side it up the edge and pull down while pushing button

you have many problems in one question. Let's start with 1. BACK UP Warning is it the backup lights not working. 2. When you open the driver's door does the inside lights turn on maybe the system doesn't know the door is open or the little switch inside the steering column is open circuit. 3. Maybe the speaker itself defects or wiring touching metal ground many questions that I cannot answer without more infos hope it helps

Hi It sounds like it would more than likely be a short from some where within the wires probably a speaker wire try turning the radio of then on whilst the ignition is on. Then turn the radio back up again. Regards Craig

its in here... https://my.gmc.com/learn/manual

Hey Curtis, airbags are not something to be "fooled" with.. there is no "repair".. its just replace... I would take mine to a QUALIFIED pro!!

Computer will turn off AC if your engine overheats. So find out what's causing the overheating first.

First off the glow plugs are not the problem. Diesel's run purely off of compression. The basic principle behind them is compress the gas and and it will "spontaneously" ignite as long an the cylinder is hot. All glow plugs do is provide the initial heat that is needed. Once it is started they shut off. If you turn your engine off for a little while and then crank it back up, the glow plugs won't come back on as long as the engine is still warm. So now onto the actual problem. You have a FSD (Fuel Supply Driver) also known as a PMD (Pump Mounted Driver) that is failing. It tells the fuel injection pump when and where to deliver fuel. When they start going bad you will notice hestitation, to random stalls (usually when hot) to no-start situations. There is a forum I found which goes into much greater detail about it and how to fix it and help prevent it from happening again. CHeck it out. 6 5 NEWBIES START HERE And here is a relocation harness kit made by Dorman: Amazon com Dorman 904 113 PMD Relocation Kit Automotive If you need further help, reach me via phone at https://www.6ya.com/expert/steven_a67ead41eb5fc62a

Loose ground on back of heads

You can order the button side of the seat belt from the dealer so the belt color will match.

Here is a graphic with the firing order http://www.wellsve.com/custom_searches/pdf/firing_order/Chevrolet_truck_27.pdf

If your car uses a CAN-bus system, and it probably does, the electrical system operates in an entirely different manner. Operating a light switch merely tells a local black box you want the lights switched on. That black box then sends a digitised request along the information highway where another black box will receive and process the request and hopefully switch on the lights. When strange things happen it is possible there is an electronic fault with one or more black boxes, the wiring or connectors or a software problem. When the owner has done all he can, replacing the bulbs and suchlike, it is time to take the car to a specialist or dealer who has dedicated diagnostoc equipment loaded with bi-directional software.

google search year make model wire schematic

Scan the codes and post them here, i will run them and let you know what the problem could be. fuse, ground, wheel speed sensor, aftermarket or wrong size wheels or tires abs module etc

Changing a battery will have no affect on lights burning out. If the voltage regulator inside the alternator is bad this could cause lights to burn out as it will cause too much voltage to be produced unregulated. If this is so, the check engine light will be on and the charge gauge will be high and you may smell the battery overcharging. Hook up a voltmeter to the battery. It should be around 14.1-14.6 volts. If within this reading, your problem is most likely coincindental

As per the attached pictures in GMC Sierra 2009 I can't find any access to the AC filter!
Doesn't have one?

Does the radio play ? Are any other back lighting components not lighting ? Does the HVAC control panel light up ? You probably need new radio ! The second interior lighting group includes lamps which may be dimmed. This group may use a combination of vacuum fluorescent (VF) illumination, LED illumination and incandescent lamps. When the ignition switch is turned to the RUN position, the radio VF display turns ON at maximum brightness. When the park lamps are ON, all incandescent and LED back lighting turn ON at the dimming level indicated by the instrument panel (I/P) dimmer switch. At the same time all VF displays dim to match the indicated dimming level. The panel dimmer switch potentiometer is an input to the body control module (BCM). When the driver selects a dimming setting by moving the I/P dimming switch potentiometer, all incandescent back lighting lamps are provided with a specific voltage. When the I/P dimmer switch is moved from MIN to MAX, all VF displays, as well as all incandescent back lighting respond from minimum intensity to maximum brightness in response to the I/P dimmer switch. Dose

Look for a vaccuum leak on the fuel system of motor.

Problem With System--Have HVAC Codes Read--That Should Tell You What Problem Is.