i have a 2002 pontiac bonneville that dose not have heat or control over the hvac at all my climate control display its not lit but the buttons are backlit red i have 2 code u0140 and p1626 my car was crashed then fully repaired but it as 67000 original miles motor is stock everything is stock i would love some help

Remove the HVAC controls and radio and see if there is any damage to the wiring harness. Very common to see wiring damage if it has an aftermarket stereo. Also check to see if the IPM (instrument panel module) connections. Its located parallel to the steering column and has 2 pink connectors.

_________________
Andrew - owner/operator of Bonnevilles Unlimited

2004 Bonneville GXP | 60k | White Gold Tricoat | custom built supercharged 3800 hot rod | garage queen
1997 Corvette | 57k | Silver Metallic | Z06 wheels | Date-night Hauler/Parts runner
2014 Town & Country Limited | Cashmere Pearl | 110k | Family Hauler
2002 Ram 1500 Quad Cab Sport | Black| 270k | Official Bonneville Hauler

I checked the module with pink connectors everything looks good and there's no damage to the radio or climate control wiring that I can see i really want heat its blowing cold air out of ankle vents and its freezing doesn't help its 4 degrees where I live

I checked the pink plugged module all wires and such look good and I unplugged the radio and the climate control all looks well no damaged wires that I could see

its weird the radio works great everything except the heat and ac i have no defrost no nothing i get air out of the ankle vents but its freezing and i get no display on my climate control head the red backlights for the buttons work they turn on but have no control over anything

oh, I might as well mention this too the head up display wasn't functioning so I took it apart and, on the display, itself I see a black circle in the top left corner is it shot?

man, if I can't figure this out, I'm crushing this car lol and I'm being serious after all the money I spent for a custom interior and tint as well as rust removal and paint now I have the heat issue to tackle if this costs me more money, I'm crushing this car for sure this was my best friends car and he died in it when it was crashed its bringing nothing but trouble so far ughhhh

Since you are a new user I have to approve all your posts before they go public. Be patient with your posts

Check Fuse #34 for IGN 3 under the seat

_________________
Andrew - owner/operator of Bonnevilles Unlimited

2004 Bonneville GXP | 60k | White Gold Tricoat | custom built supercharged 3800 hot rod | garage queen
1997 Corvette | 57k | Silver Metallic | Z06 wheels | Date-night Hauler/Parts runner
2014 Town & Country Limited | Cashmere Pearl | 110k | Family Hauler
2002 Ram 1500 Quad Cab Sport | Black| 270k | Official Bonneville Hauler

i checked the ign 3 fuse under rear seat get power to both ends of fuse

any ideas on what could be causing this would like to fix by Wednesday I know I'm really impatient and I apologize in advance

On one of my test Bonnevilles, when I pull fuse #34 for the IGN 3, it kills the display of the HVAC controls but the red backlighting stays lit. Even though your fuse is good, I think you have a problem with that circuit. Check for power and ground at the panel.

_________________
Andrew - owner/operator of Bonnevilles Unlimited

2004 Bonneville GXP | 60k | White Gold Tricoat | custom built supercharged 3800 hot rod | garage queen
1997 Corvette | 57k | Silver Metallic | Z06 wheels | Date-night Hauler/Parts runner
2014 Town & Country Limited | Cashmere Pearl | 110k | Family Hauler
2002 Ram 1500 Quad Cab Sport | Black| 270k | Official Bonneville Hauler

ok would that explain why i have no control over any of the heat or ac features like defrost ect

Yes, your HVAC unit has no power except the backlighting (different circuit).

_________________
Andrew - owner/operator of Bonnevilles Unlimited

2004 Bonneville GXP | 60k | White Gold Tricoat | custom built supercharged 3800 hot rod | garage queen
1997 Corvette | 57k | Silver Metallic | Z06 wheels | Date-night Hauler/Parts runner
2014 Town & Country Limited | Cashmere Pearl | 110k | Family Hauler
2002 Ram 1500 Quad Cab Sport | Black| 270k | Official Bonneville Hauler

so on a1 pin i have 0.4 resistance and on pin a5 i have 0.4 resistance

and i have 3.2 volts at a2 and 3.5 at b1 and like 11 on both b5-b6

You should have battery voltage at A2 for the HVAC module to operate, and battery voltage at B1 for the backlighting to work. You have a short on the Ignition 3 circuit.

_________________
Andrew - owner/operator of Bonnevilles Unlimited

2004 Bonneville GXP | 60k | White Gold Tricoat | custom built supercharged 3800 hot rod | garage queen
1997 Corvette | 57k | Silver Metallic | Z06 wheels | Date-night Hauler/Parts runner
2014 Town & Country Limited | Cashmere Pearl | 110k | Family Hauler
2002 Ram 1500 Quad Cab Sport | Black| 270k | Official Bonneville Hauler

wait how do you know i have a short and how do i fix it

anychance you know where that wire goes and or if i can run a 12v wire from the battery sraight there lol prob not

Do you have 12v or 3v at Fuse #34? If you have 12v at the fuse and 3v down the line, that means you have a short to ground and its pulling down the voltage.

Technically yes you could run a new 12v power wire to the A2 pin to get things working.

_________________
Andrew - owner/operator of Bonnevilles Unlimited

2004 Bonneville GXP | 60k | White Gold Tricoat | custom built supercharged 3800 hot rod | garage queen
1997 Corvette | 57k | Silver Metallic | Z06 wheels | Date-night Hauler/Parts runner
2014 Town & Country Limited | Cashmere Pearl | 110k | Family Hauler
2002 Ram 1500 Quad Cab Sport | Black| 270k | Official Bonneville Hauler

If it were me, I'd be looking at the splice points on the schematic.

S200 near the IPM (instrument panel module with pink connectors)
S304 near driver B-pillar
S307 near rear fuse box

_________________
Andrew - owner/operator of Bonnevilles Unlimited

2004 Bonneville GXP | 60k | White Gold Tricoat | custom built supercharged 3800 hot rod | garage queen
1997 Corvette | 57k | Silver Metallic | Z06 wheels | Date-night Hauler/Parts runner
2014 Town & Country Limited | Cashmere Pearl | 110k | Family Hauler
2002 Ram 1500 Quad Cab Sport | Black| 270k | Official Bonneville Hauler