GMC Questions and Answers

Post your GMC question or share what you know by answering questions

• Ask a Question
• All Questions
• Unanswered
• Ask a Question

• 2008 GMC Canyon SL 4 Cyl 2.90L Transmissions & Drivetrains - by Bobby Flake 4/20/2018 Won't go in gear shifter moves and truck finally goes in gear after several tries Can move shifter up and down trk doesn't go in gear until several tries 1 answer Answer

---

• 1989 GMC S15 Sierra Classic 6 Cyl 4.30L Engine - by David 4/10/2018 1989 4.3 setting tps code 22 1989 4.3 keeps setting 22 code. Tps low voltage. Replaced the tps twice. Replaced the ECM. Still setting code. Tps wiring testing good. Will not set code when first started. Only after engine has heated up. Any ideas? 1 answer Answer

---

• 2006 GMC Sierra 1500 SLT 8 Cyl 5.30L Engine - by Earl Miller 3/30/2018 Code: PO172, Definition "System to rich bank one". What does system to rich mean bank one? How is this fixed? What does the definition mean and how is the system to rich on bank one be repaired? 1 answer Answer

---

• 2000 GMC Sierra 1500 SLT 8 Cyl 5.30L Body & Interior - by Dave 3/10/2018 No tbc-2b fuss for reverse lights My reverse lights don't work, neither do the door lights inside. The dome light is missing I ordered a new one. Would the some light being gone cause the reverse lights to not work? Everything I can find tells me to replaced the tbc-2b fuse and there isn't one in my ... 1 answer Answer

---

• 2000 GMC Sierra 1500 SLT 8 Cyl 5.30L Body & Interior - by Dave 3/10/2018 No tbc-2b fuss for reverse lights My reverse lights don't work, neither do the door lights inside. The dome light is missing I ordered a new one. Would the some light being gone cause the reverse lights to not work? Everything I can find tells me to replaced the tbc-2b fuse and there isn't one in my ... 0 answers Answer

---

• 2002 GMC Yukon XL 2500 SLE 8 Cyl 8.10L Engine - by john 3/4/2018 Eccessive oil consumption hi .my suv is v8 8.1l .im having problem with engine.every 800 m i have to add 2.5 quarts of oil due to oil consumption.changing oil with filter regulary every 3000 m .tried many multiple grades but i get the same problem.pls help no heat problems.no leaks .no ... 2 answers Answer

---

• 2002 GMC Yukon XL 2500 SLE 8 Cyl 8.10L Engine - by john 3/4/2018 Accessive oil consumption my suv : 8 cylinder 8.1 l getting oil consumption about every 800 m. 2.5 quarts from oil change.no smoke .no engine noise.just keep adding oil.after 3000 m i change oil.oil is not getting dirt or color much black.some say but a catch can.pls guide me for best solution 1 answer Answer

---

• 2002 GMC Yukon XL 2500 SLE 8 Cyl 8.10L Engine - by john 3/4/2018 Accessive oil consumption my suv : 8 cylinder 8.1 l getting oil consumption about every 800 m. 2.5 quarts from oil change.no smoke .no engine noise.just keep adding oil.after 3000 m i change oil.oil is not getting dirt or color much black.some say but a catch can.pls guide me for best solution 1 answer Answer

---

• 2002 GMC Yukon XL 2500 SLE 8 Cyl 8.10L Engine - by john 3/3/2018 Accessive oil consumption my suv : 8 cylinder 8.1 l getting oil consumption about every 800 m. 2.5 quarts from oil change.no smoke .no engine noise.just keep adding oil.after 3000 m i change oil.oil is not getting dirt or color much black.some say but a catch can.pls guide me for best solution 3 answers Answer

---

• 2014 GMC Acadia SLT 6 Cyl 3.60L Body & Interior - by Moose 2/23/2018 Squeaking noise from right rear passenger suspension. I have developed a squeaking noise from right rear suspension. Intermittent, mostly happens when hitting road bumps but not always. Bumps do not have to be large. Sounds to me like metal on metal or perhaps rubber against metal. Have checked rear deck lid, silicone ... 1 answer Answer

---

• 2000 GMC Sonoma SLS 6 Cyl 4.30L Engine - by darren 2/23/2018 What is the motor in engine compartment beside fuse box The small electric motor which appears to be a vac pump as it has 5 lines coming from it continues to run after engine is shut off. 1 answer Answer

---

• 2000 GMC Sonoma SLS 6 Cyl 4.30L Engine - by darren 2/23/2018 What is the motor in engine compartment beside fuse box When I shut the engine off this small electric motor keeps running. It appears to have vac lines coming from it but I don't know for sure. 0 answers Answer

---

• 2013 GMC Acadia SLE 6 Cyl 3.60L Body & Interior - by AJ13 2/22/2018 What should i check to diagnose why i have no headlights, high or low beams? Last night when i started my 2013 acadia neither my high or low beams would turn on in auto mode or manually. Taillights, running lights and blinkers were all fine. I checked fuses and they look fine. Just looking for some suggestions to check next. Thanks 0 answers Answer

---

• 2013 GMC Acadia SLE 6 Cyl 3.60L Body & Interior - by AJ13 2/22/2018 What should i check to diagnose why i have no headlights, high or low beams? Last night when i started my 2013 acadia neither my high or low beams would turn on in auto mode or manually. Taillights, running lights and blinkers were all fine. I checked fuses and they look fine. Just looking for some suggestions to check next. Thanks 0 answers Answer

---

• 2013 GMC Acadia SLE 6 Cyl 3.60L Body & Interior - by AJ13 2/22/2018 What should i check to diagnose why i have no headlights, high or low beams? Last night when i started my 2013 acadia neither my high or low beams would turn on in auto mode or manually. Taillights, running lights and blinkers were all fine. I checked fuses and they look fine. Just looking for some suggestions to check next. Thanks 0 answers Answer